how to implement SSL in program?

ahclgc 2000-07-20 10:54:00

I have to implement SSL in program, who knows how to do that?
and give me some documets and examples?
thanks a lot.

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leo_zhangfh 2001-10-23

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I think, you or your company would rather bye a certification authorize than implementing by yourself.

www.verisign.com

ahclgc 2000-07-25

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Hi moyixin:
thanks for information.
but How to establish such an application step by step? are there any
document explain it?, and some examples?

thanks a lot.

moyixin 2000-07-22

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first, you download the ssl packege, such as SSL_eay or OpenSSL,there are examples in it.
second ,compile the package,generate the lib
third, call the lib

you must note, you resolve your pki? that is where is the certificate.

mach 2000-07-20

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Over 45 practical recipes to empower you with the latest FreeSWITCH 1.6 features About This Book Learn how to create a fast and secure messaging and telephony system with FreeSWITCH Trap all the common functionalities of the telephony platform using popular communication protocols Move recipe by recipe to get the gist of the platform Who This Book Is For FreeSWITCH 1.6 Cookbook is written for anyone who wants to learn more about using FreeSWITCH in production. The information is presented in such a way that you can get up and running quickly. The cookbook approach eschews much of the foundational concepts, and instead focuses on discrete examples that illustrate specific features. If you need to implement a particular feature as quickly as possible, then this book is for you. What You Will Learn Configure users and phones as well as connections to VoIP providers Control FreeSWITCH remotely with the powerful event socket interface Route inbound and outbound calls Insert CDRs into a database Enable text-to-speech in your voice applications Set up SSL certificates and release services to WebRTC Write JavaScript WebRTC clients for real time data/video/audio in browsers Grasp the FreeSWITCH security best practices and Lua application programming knowledge In Detail FreeSWITCH is an open source carrier-grade telephony platform designed to facilitate the creation of voice, chat, and video applications, via phones and web browsers. It is scalable, carrier-ready, and easy-to-program for converged communication and VoIP. The technology serves SIP, WebRTC, PSTN, FAX, PBX, VERTO, and all the relevant channels essential to stay connected in today's world. In the FreeSWITCH 1.6 Cookbook, members of the FreeSWITCH development team share some of their hard-earned knowledge with you. Use this knowledge to improve and expand your FreeSWITCH installations. Table of Contents Chapter 1: Routing Calls Chapter 2: Connecting Telephones and Service Providers Chapter 3: Processing Call Detail Records Chapter 4: External Control Chapter 5: PBX Functionality Chapter 6: WebRTC and Mod_Verto Chapter 7: Dialplan Scripting with Lua

Contents About the Author...............................................................................................xix About the Technical Reviewer and Contributing Author.................xxi Chapter1 Apache and the Internet..............................................1 Apache: The Anatomy of a Web Server.........................................................1 The Apache Source .............................................................................................1 The Apache License............................................................................................1 Support for Apache.............................................................................................2 How Apache Works..............................................................................................3 The Hypertext Transfer Protocol..................................................................7 HTTP Requests and Responses..........................................................................7 HTTP Headers...................................................................................................12 Networking and TCP/IP......................................................................................13 Definitions.........................................................................................................13 Packets and Encapsulation...............................................................................14 ACKs, NAKs, and Other Messages....................................................................15 The TCP/IP Network Model.............................................................................16 Non-IP Protocols...............................................................................................19 IP Addresses and Network Classes...................................................................19 Special IP Addresses..........................................................................................20 Netmasks and Routing......................................................................................21 Web Services: Well-Known Ports......................................................................23 Internet Daemon: The Networking Super Server...........................................24 The Future: IPv6................................................................................................25 Networking Tools...............................................................................................26 Server Hardware...................................................................................................29 Supported Platforms.........................................................................................29 Basic Server Requirements...............................................................................30 Memory..............................................................................................................31 Network Interface..............................................................................................32 Internet Connection.........................................................................................32 Hard Disk and Controller.................................................................................33 Operating System Checklist.............................................................................33 Redundancy and Backup..................................................................................34 Specific Hardware Solutions............................................................................35 Get Someone Else to Do It.............................................................................36 Summary....................................................................................................................36 v 3006_Ch00_CMP2 12/14/03 8:56 AM Page v Chapter 2 Getting Started with Apache.................................37 Installing Apache..............................................................................................38 Getting Apache..................................................................................................38 Installing Apache from Binary Distribution....................................................39 Installing Apache from Source.........................................................................41 Installing Apache from Prebuilt Packages.......................................................41 Installing Apache by Hand...............................................................................45 Upgrading Apache.............................................................................................47 Other Issues.......................................................................................................49 Basic Configuration..........................................................................................50 Decisions............................................................................................................50 Introducing the Master Configuration File.....................................................55 Other Basic Configuration Directives..............................................................56 Starting, Stopping, and Restarting the Server.................................57 Starting Apache on Unix...................................................................................58 Starting Apache on Windows...........................................................................59 Invocation Options...........................................................................................60 Restarting the Server.........................................................................................73 Stopping the Server...........................................................................................75 Starting the Server Automatically....................................................................76 Testing the Server............................................................................................81 Testing with a Browser......................................................................................82 Testing from the Command Line or a Terminal Program..............................82 Testing the Server Configuration Without Starting It.....................................85 Getting the Server Status from the Command Line.......................................86 Using Graphical Configuration Tools.......................................................86 Comanche..........................................................................................................87 TkApache...........................................................................................................91 LinuxConf..........................................................................................................91 Webmin..............................................................................................................91 ApacheConf.......................................................................................................97 Other Configuration Tools................................................................................99 Summary..................................................................................................................100 Chapter 3 Building Apache the Way You Want It...........101 Why Build Apache Yourself?.........................................................................101 Verifying the Apache Source Archive.............................................................103 Building Apache from Source......................................................................105 Configuring and Building Apache.................................................................106 Determining Which Modules to Include.......................................................111 Building Apache As a Dynamic Server..........................................................116 Contents vi 3006_Ch00_CMP2 12/14/03 8:56 AM Page vi Changing the Module Order (Apache 1.3)....................................................118 Checking the Generated Configuration........................................................120 Building Apache from Source As an RPM (Apache 2)..................................122 Advanced Configuration.................................................................................124 Configuring Apache’s Layout..........................................................................124 Choosing a Layout Scheme............................................................................124 Choosing a Multiprocessing Module (Apache 2)..........................................132 Rules (Apache 1.3)...........................................................................................135 Building Apache with suExec support...........................................................137 Configuring Apache’s Supporting Files and Scripts.....................................139 Configuring Apache 2 for Cross-Platform Builds.........................................140 Configuring Apache for Production or Debug Builds..................................142 Configuring Apache for Binary Distribution.................................................143 Configuring Apache’s Library and Include Paths..........................................143 Configuring the Build Environment.........................................................144 Building Modules with configure and apxs..........................................146 Adding Third-Party Modules with configure................................................146 Building Modules with apxs...........................................................................148 Installing Modules with apxs..........................................................................150 Generating Module Templates with apxs......................................................151 Overriding apxs Defaults and Using apxs in makefiles................................152 Summary..................................................................................................................153 Chapter 4 Configuring Apache the Way You Want It...155 Where Apache Looks for Its Configuration..........................................155 Configuration File Syntax...............................................................................156 Configuration for Virtual Hosts......................................................................156 Including Multiple Configuration Files.........................................................157 Per-Directory Configuration..........................................................................159 Conditional Configuration.............................................................................160 How Apache Structures Its Configuration............................................163 Apache’s Container Directives........................................................................164 Directive Types and Locations.......................................................................168 Where Directives Can Go................................................................................171 Container Scope and Nesting.........................................................................172 How Apache Combines Containers and Their Contents.............................174 Legality of Directives in Containers...............................................................175 Options and Overrides....................................................................................176 Enabling and Disabling Features with Options............................................176 Overriding Directives with Per-Directory Configuration.............................179 Contents vii 3006_Ch00_CMP2 12/14/03 8:56 AM Page vii Restricting Access with allow and deny..............................................182 Controlling Access by Name...........................................................................183 Controlling Access by IP Address...................................................................184 Controlling Subnet Access by Network and Netmask..................................185 Controlling Access by HTTP Header.............................................................186 Combining Host-Based Access with User Authentication...........................187 Overriding Host-Based Access.......................................................................188 Directory Listings..........................................................................................188 Enabling and Disabling Directory Indices....................................................189 How mod_autoindex Generates the HTML Page.........................................190 Controlling Which Files Are Seen with IndexIgnore.....................................196 Controlling the Sort Order..............................................................................197 Assigning Icons................................................................................................199 Assigning Descriptions...................................................................................202 Apache’s Environment......................................................................................203 Setting, Unsetting, and Passing Variables from the Shell.............................204 Setting Variables Conditionally......................................................................205 Special Browser Variables...............................................................................207 Detecting Robots with BrowserMatch...........................................................209 Passing Variables to CGI.................................................................................209 Conditional Access Control............................................................................210 Caveats with SetEnvIf vs. SetEnv....................................................................210 Setting Variables with mod_rewrite...............................................................211 Controlling Request and Response Headers..........................................211 Setting Custom Response Headers................................................................213 Setting Custom Request Headers...................................................................215 Inserting Dynamic Values into Headers........................................................216 Setting Custom Headers Conditionally.........................................................217 Retrieving Response Headers from Metadata Files......................................217 Setting Expiry Times.......................................................................................219 Sending Content As-Is....................................................................................222 Controlling the Server Identification Header.................................223 Sending a Content Digest.............................................................................224 Handling the Neighbors.................................................................................225 Controlling Robots with robots.txt................................................................226 Controlling Robots in HTML..........................................................................227 Controlling Robots with Access Control........................................................227 Attracting Robots.............................................................................................228 Making Sure Robots Index the Right Information........................................228 Known Robots, Bad Robots, and Further Reading.......................................229 Summary..................................................................................................................229 Contents viii 3006_Ch00_CMP2 12/14/03 8:56 AM Page viii Chapter 5 Deciding What the Client Needs........................231 Content Handling and Negotiation...........................................................231 File Types.........................................................................................................232 File Encoding...................................................................................................236 File Languages.................................................................................................243 File Character Sets...........................................................................................245 Handling URLs with Extra Path Information................................................247 Content Negotiation.......................................................................................248 Content Negotiation with MultiViews...........................................................250 File Permutations and Valid URLs with MultiViews.....................................256 Magic MIME Types..........................................................................................260 Error and Response Handling......................................................................264 How Apache Handles Errors...........................................................................265 Error and Response Codes.............................................................................265 The ErrorDocument Directive.......................................................................266 Limitations of ErrorDocument......................................................................270 Aliases and Redirection...............................................................................271 Aliases and Script Aliases................................................................................271 Redirections.....................................................................................................273 Rewriting URLs with mod_rewrite.................................................................277 Server-Side Image Maps.................................................................................300 Matching Misspelled URLS............................................................................305 Summary..................................................................................................................306 Chapter 6 Delivering Dynamic Content..................................307 Server-Side Includes......................................................................................308 Enabling SSI.....................................................................................................309 Format of SSI Commands...............................................................................311 The SSI Command Set....................................................................................312 SSI Variables.....................................................................................................312 Passing Trailing Path Information to SSIs (and Other Dynamic Documents).................................................................315 Setting the Date and Error Format.................................................................316 Templating with SSIs.......................................................................................317 Caching Server-Parsed Documents...............................................................319 Identifying Server-Parsed Documents by Execute Permission...................320 CGI: The Common Gateway Interface.........................................................321 CGI and the Environment..............................................................................321 Configuring Apache to Recognize CGI Scripts.............................................323 Setting Up a CGI Directory with ExecCGI: A Simple Way............................327 Triggering CGI Scripts on Events...................................................................330 Contents ix 3006_Ch00_CMP2 12/14/03 8:56 AM Page ix ISINDEX-Style CGI Scripts and Command Line Arguments................332 Writing and Debugging CGI Scripts.........................................................333 A Minimal CGI Script......................................................................................333 Interactive Scripts: A Simple Form................................................................337 Adding Headers...............................................................................................338 Debugging CGI Scripts....................................................................................339 Setting the CGI Daemon Socket.....................................................................345 Limiting CGI Resource Usage.........................................................................346 Actions, Handlers, and Filters................................................................347 Handlers...........................................................................................................348 Filters................................................................................................................354 Dynamic Content and Security....................................................................363 CGI Security Issues..........................................................................................363 Security Advice on the Web............................................................................364 Security Issues with Apache CGI Configuration...........................................364 An Example of an Insecure CGI Script..........................................................365 Known Insecure CGI Scripts...........................................................................370 CGI Wrappers...................................................................................................370 Security Checklist............................................................................................380 Inventing a Better CGI Script with FastCGI......................................381 Summary..................................................................................................................403 Chapter 7 Hosting More Than One Web Site........................405 Implementing User Directories with UserDir......................................406 Enabling and Disabling Specific Users..........................................................407 Redirecting Users to Other Servers................................................................408 Alternative Ways to Implement User Directories.........................................409 Separate Servers..............................................................................................410 Restricting Apache’s Field of View..................................................................411 Specifying Different Configurations and Server Roots................................412 Starting Separate Servers from the Same Configuration.............................412 Sharing External Configuration Files.............................................................413 IP-Based Virtual Hosting.............................................................................414 Multiple IPs, Separate Networks, and Virtual Interfaces..............................415 Configuring What Apache Listens To.............................................................416 Defining IP-Based Virtual Hosts.....................................................................418 Virtual Hosts and the Server-Level Configuration........................................421 Specifying Virtual Host User Privileges..........................................................422 Excluded Directives.........................................................................................426 Default Virtual Hosts....................................................................................427 Contents x 3006_Ch00_CMP2 12/14/03 8:56 AM Page x Name-Based Virtual Hosting.........................................................................428 Defining Named Virtual Hosts.......................................................................428 Server Names and Aliases...............................................................................430 Defining a Default Host for Name-Based Virtual Hosting...........................430 Mixing IP-Based and Name-Based Hosting..................................................431 Issues Affecting Virtual Hosting...........................................................434 Log Files and File Handles..............................................................................434 Virtual Hosts and Server Security..................................................................436 Secure HTTP and Virtual Hosts......................................................................437 Handling HTTP/1.0 Clients with Name-Based Virtual Hosts......................439 Dynamic Virtual Hosting...............................................................................441 Mass Hosting with Virtual-Host Aliases........................................................441 Mapping Hostnames Dynamically with mod_rewrite.................................448 Generating On the Fly and Included Configuration Files with mod_perl..449 Summary..................................................................................................................455 Chapter 8 Improving Apache’s Performance........................457 Apache’s Performance Directives..............................................................458 Configuring MPMs: Processes and Threads..................................................459 Network and IP-Related Performance Directives.........................................470 HTTP-Related Performance Directives.........................................................472 HTTP Limit Directives....................................................................................475 Configuring Apache for Better Performance........................................477 Directives That Affect Performance...............................................................477 Additional Directives for Tuning Performance.............................................482 Benchmarking Apache’s Performance.........................................................490 Benchmarking Apache with ab......................................................................490 Benchmarking Apache with gprof.................................................................495 External Benchmarking Tools........................................................................496 Benchmarking Strategy and Pitfalls...............................................................496 A Performance Checklist...............................................................................497 Proxying................................................................................................................498 Installing and Enabling Proxy Services..........................................................498 Normal Proxy Operation.................................................................................499 Configuring Apache As a Proxy......................................................................500 URL Matching with Directory Containers....................................................502 Blocking Sites via the Proxy............................................................................504 Localizing Remote URLs and Hiding Servers from View.............................504 Relaying Requests to Remote Proxies............................................................508 Proxy Chains and the Via Header...................................................................509 Proxies and Intranets......................................................................................512 Handling Errors...............................................................................................512 Contents xi 3006_Ch00_CMP2 12/14/03 8:56 AM Page xi Timing Out Proxy Requests............................................................................514 Tunneling Other Protocols.............................................................................514 Tuning Proxy Operations................................................................................515 Squid: A High-Performance Proxy Alternative.............................................516 Caching..................................................................................................................516 Enabling Caching............................................................................................516 File-Based Caching.........................................................................................517 In-Memory Caching (Apache 2 Only)............................................................520 Coordinating Memory-Based and Disk-Based Caches................................522 General Cache Configuration.........................................................................522 Maintaining Good Relations with External Caches......................................527 Fault Tolerance and Clustering................................................................529 Backup Server via Redirected Secondary DNS.............................................530 Load Sharing with Round-Robin DNS...........................................................531 Backup Server via Floating IP Address..........................................................531 Hardware Load Balancing..............................................................................532 Clustering with Apache...................................................................................533 Other Clustering Solutions.............................................................................536 Summary..................................................................................................................537 Chapter 9 Monitoring Apache.........................................................539 Logs and Logging..............................................................................................539 Log Files and Security.....................................................................................540 The Error Log...................................................................................................540 Setting the Log Level.......................................................................................541 Logging Errors to the System Log..................................................................542 Transfer Logs...................................................................................................544 Driving Applications Through Logs...............................................................554 Log Rotation....................................................................................................556 Lies, Logs, and Statistics.........................................................................560 What You Can’t Find Out from Logs...............................................................560 Analog: A Log Analyzer...................................................................................561 Server Information..........................................................................................577 Server Status....................................................................................................578 Server Info........................................................................................................581 Securing Access to Server Information.........................................................582 User Tracking.....................................................................................................583 Alternatives to User Tracking.........................................................................584 Cookie Tracking with mod_usertrack............................................................584 URL Tracking with mod_session....................................................................589 Other Session Tracking Options.....................................................................594 Summary..................................................................................................................595 Contents xii 3006_Ch00_CMP2 12/14/03 8:56 AM Page xii Chapter 10Securing Apache..............................................................597 User Authentication........................................................................................597 Apache Authentication Modules...................................................................598 Authentication Configuration Requirements...............................................599 Using Authentication Directives in .htaccess...............................................601 Basic Authentication.......................................................................................601 Digest Authentication.....................................................................................603 Anonymous Authentication...........................................................................606 Setting Up User Information..........................................................................606 Specifying User Requirements.......................................................................614 LDAP Authentication......................................................................................617 Using Multiple Authentication Schemes.......................................................624 Combining User- and Host-Based Authentication......................................626 Securing Basic Authentication with SSL.......................................................627 SSL and Apache...................................................................................................627 Downloading OpenSSL and ModSSL............................................................628 Building and Installing the OpenSSL Library...............................................629 Building and Installing mod_ssl for Apache 2..............................................633 Building and Installing mod_ssl for Apache 1.3...........................................633 Basic SSL Configuration.................................................................................637 Installing a Private Key....................................................................................639 Creating a Certificate Signing Request and Temporary Certificate.............640 Getting a Signed Certificate............................................................................642 Advanced SSL Configuration.........................................................................644 Server-Level Configuration............................................................................644 Client Certification..........................................................................................657 Using Client Certification with User Authentication..................659 SSL and Logging..............................................................................................660 SSL Environment Variables and CGI.............................................................662 SSL and Virtual Hosts......................................................................................666 Advanced Features..........................................................................................668 Summary..................................................................................................................671 Chapter 11Improving Web Server Security..........................673 Apache Features.................................................................................................673 Unwanted Files................................................................................................674 Automatic Directory Indices..........................................................................674 Symbolic Links................................................................................................675 Server-Side Includes.......................................................................................676 ISINDEX-Style CGI Scripts.............................................................................677 Server Tokens...................................................................................................677 Contents xiii 3006_Ch00_CMP2 12/14/03 8:56 AM Page xiii File Permissions..............................................................................................678 Viewing Server Information with mod_info..........................................679 Restricting Server Privileges..................................................................679 Restricting Access by Hostname and IP Address...............................680 Other Server Security Measures................................................................682 Dedicated Server..............................................................................................682 File Integrity...................................................................................................683 md5sum...........................................................................................................684 Tripwire............................................................................................................685 Hardening the Server......................................................................................686 Minimizing Services........................................................................................686 Port Scanning with nmap ..............................................................................688 Probing with Nessus.......................................................................................689 Hardening Windows 2000 and XP..................................................................689 Disabling Network Services.........................................................................690 File Transfer Protocol (FTP)............................................................................690 telnet................................................................................................................690 rlogin, rsh, rexec, rcp.......................................................................................690 Network Filesystem (NFS)..............................................................................690 sendmail/Other Mail Transport Agents (MTAs)...........................................691 Restricting Services with TCP Wrappers........................................................691 Security Fixes, Alerts, and Online Resources.................................693 The WWW Security FAQ..................................................................................693 The BugTraQ Mailing List and Archive..........................................................693 Operating System Newsletters.......................................................................693 Package and Module Notification..................................................................694 Removing Important Data from the Server............................................694 Enabling Secure Logins with SSH..............................................................694 Building and Installing OpenSSH..................................................................695 Authentication Strategies...............................................................................698 Configuring SSH..............................................................................................699 Testing SSH......................................................................................................702 Expanding SSH to Authenticate Users..........................................................703 Secure Server Backups with Rsync and SSH.................................................704 Forwarding Client Connections to Server Applications...............................705 Firewalls and Multifacing Servers.........................................................706 Types of Firewall..............................................................................................706 Designing the Network Topology...................................................................707 Running Apache Under a Virtual chroot Root Directory................709 What chroot Is.................................................................................................709 What chroot Isn’t.............................................................................................710 Setting Up Apache for chroot Operation.......................................................711 Contents xiv 3006_Ch00_CMP2 12/14/03 8:56 AM Page xiv Server Security Checklist...........................................................................723 Avoid Root Services.........................................................................................723 Maintain Logs Properly..................................................................................723 Keep It Simple..................................................................................................724 Block Abusive Clients......................................................................................724 Have an Effective Backup and Restore Process............................................725 Plan for High Availability, Capacity, and Disaster Recovery........................725 Monitor the Server..........................................................................................725 Take Care with Information Flow...................................................................726 Choose an Effective robots.txt Policy............................................................726 Summary..................................................................................................................726 Chapter 12Extending Apache............................................................727 WebDAV....................................................................................................................727 Adding WebDAV to Apache.............................................................................728 The WebDAV Protocol.....................................................................................729 Configuring Apache for WebDAV...................................................................731 Restricting Options and Disabling Overrides...............................................734 WebDAV and Virtual Hosts.............................................................................735 Configuring the DAV Lock Time.....................................................................735 Limitations of File-Based Repositories..........................................................736 Protecting WebDAV Servers............................................................................737 More Advanced Configurations.....................................................................737 Cooperating with CGI and Other Content Handlers....................................740 ISAPI......................................................................................................................741 Supported ISAPI Support Functions.............................................................742 Configuring ISAPI Extensions........................................................................743 Setting the Maximum Initial Request Data Size...........................................744 Logging ISAPI Extensions...............................................................................745 Preloading and Caching ISAPI Extensions....................................................746 Handling Asynchronous ISAPI Extensions...................................................746 Perl.........................................................................................................................746 Building and Installing mod_perl..................................................................748 Migrating mod_perl from Apache 1.3 to Apache 2.......................................755 Configuring and Implementing Perl Handlers.............................................758 Configuring and Implementing Perl Filters..................................................771 Warnings, Taint Mode, and Debugging.........................................................772 Managing Perl Threads in mod_perl 2...........................................................774 Initializing Modules at Startup.......................................................................779 Restarting mod_perl and Auto-Reloading Modules.....................................780 Creating a mod_perl Status Page...................................................................782 Running CGI Scripts Under mod_perl..........................................................782 Contents xv 3006_Ch00_CMP2 12/14/03 8:56 AM Page xv CGI Caveats......................................................................................................785 Passing Variables to Perl Handlers.................................................................787 Using mod_perl with Server-Side Includes...................................................788 Embedding Perl in HTML...............................................................................789 Embedding Perl in Apache’s Configuration..................................................794 PHP...........................................................................................................................795 Installing PHP..................................................................................................796 Getting the PHP source...................................................................................796 Configuring Apache to Work with PHP..........................................................802 Configuring PHP.............................................................................................803 Testing PHP with Apache................................................................................807 Tomcat/Java.........................................................................................................807 So What Is Tomcat?..........................................................................................807 Installation.......................................................................................................808 Tomcat Configuration.....................................................................................813 mod_jk.............................................................................................................818 Mod_python....................................................................................................829 mod_ruby.........................................................................................................835 Summary..................................................................................................................839 Index....................................................................................................................843

haproxy 负载sslHi. In this tutorial you will get to know how to implement HTTPS in your servers by using a free certificate from Certbot and implementing it in your Load Balancer with HAProxy. 你好在本教程中，...

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