获取对本机访问的所有IP地址及端口(200）相送

[xiaoMONKEY]

如题：我想知道当别人访问我计算机时，自动列出所有计算机的IP地址及端口清单,

[TechnoFantasy]

一个可以看现在计算机上有那些端口已经被打开的程序。利用了Windows提供的IPHelpApi.DLL提供的输出函数来实现端口监视功能。

http://www.applevb.com/sourcecode/seeopen.zip

[TechnoFantasy]

http://www.applevb.com/sourcecode/snet.htm

可以到这里找一下网络代码。

[yinweihong]

netstat -n

[zou19820704]

来学习的，没有学到东西，帮你顶了

[rainstormmaster]

//来学习的，没有学到东西，帮你顶了

呵呵,其实:netstat -n
就可以了,剩下的事就是想办法在自己的程序中显示结果了:
窗体上一个多行文本框,一个按钮:
Option Explicit
Option Base 0
'Code written by JoshT. Use at your own risk

Private Declare Function CreateProcess Lib "kernel32" Alias "CreateProcessA" _
(ByVal lpApplicationName As String, _
ByVal lpCommandLine As String, _
lpProcessAttributes As SECURITY_ATTRIBUTES, _
lpThreadAttributes As SECURITY_ATTRIBUTES, _
ByVal bInheritHandles As Long, _
ByVal dwCreationFlags As Long, _
lpEnvironment As Any, _
ByVal lpCurrentDirectory As String, _
lpStartupInfo As STARTUPINFO, _
lpProcessInformation As PROCESS_INFORMATION) As Long

Private Declare Function CloseHandle Lib "kernel32.dll" (ByVal hObject As Long) As Long

Private Declare Function ReadFile Lib "kernel32" (ByVal hFile As Long, _
lpBuffer As Any, ByVal nNumberOfBytesToRead As Long, lpNumberOfBytesRead As Long, _
lpOverlapped As Long) As Long

Private Declare Function WaitForSingleObject Lib "kernel32" _
(ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long

Private Declare Function CreatePipe Lib "kernel32" (phReadPipe As Long, _
phWritePipe As Long, lpPipeAttributes As SECURITY_ATTRIBUTES, _
ByVal nSize As Long) As Long

Private Type STARTUPINFO
cb As Long
lpReserved As String
lpDesktop As String
lpTitle As String
dwX As Long
dwY As Long
dwXSize As Long
dwYSize As Long
dwXCountChars As Long
dwYCountChars As Long
dwFillAttribute As Long
dwFlags As Long
wShowWindow As Integer
cbReserved2 As Integer
lpReserved2 As Long
hStdInput As Long
hStdOutput As Long
hStdError As Long
End Type

Private Type PROCESS_INFORMATION
hProcess As Long
hThread As Long
dwProcessId As Long
dwThreadId As Long
End Type

Private Type SECURITY_ATTRIBUTES
nLength As Long
lpSecurityDescriptor As Long
bInheritHandle As Long
End Type

Private Const NORMAL_PRIORITY_CLASS As Long = &H20&

Private Const STARTF_USESTDHANDLES As Long = &H100&
Private Const STARTF_USESHOWWINDOW As Long = &H1&
Private Const SW_HIDE As Long = 0&

Private Const INFINITE As Long = &HFFFF&

Public Function RunCommand(CommandLine As String) As String
Dim si As STARTUPINFO 'used to send info the CreateProcess
Dim pi As PROCESS_INFORMATION 'used to receive info about the created process
Dim retval As Long 'return value
Dim hRead As Long 'the handle to the read end of the pipe
Dim hWrite As Long 'the handle to the write end of the pipe
Dim sBuffer(0 To 63) As Byte 'the buffer to store data as we read it from the pipe
Dim lgSize As Long 'returned number of bytes read by readfile
Dim sa As SECURITY_ATTRIBUTES
Dim strResult As String 'returned results of the command line

'set up security attributes structure
With sa
.nLength = Len(sa)
.bInheritHandle = 1& 'inherit, needed for this to work
.lpSecurityDescriptor = 0&
End With

'create our anonymous pipe an check for success
' note we use the default buffer size
' this could cause problems if the process tries to write more than this buffer size
retval = CreatePipe(hRead, hWrite, sa, 0&)
If retval = 0 Then
Debug.Print "CreatePipe Failed"
RunCommand = ""
Exit Function
End If

'set up startup info
With si
.cb = Len(si)
.dwFlags = STARTF_USESTDHANDLES Or STARTF_USESHOWWINDOW 'tell it to use (not ignore) the values below
.wShowWindow = SW_HIDE
' .hStdInput = GetStdHandle(STD_INPUT_HANDLE)
.hStdOutput = hWrite 'pass the write end of the pipe as the processes standard output
' .hStdError = GetStdHandle(STD_ERROR_HANDLE)
End With

'run the command line and check for success
retval = CreateProcess(vbNullString, _
CommandLine & vbNullChar, _
sa, _
sa, _
1&, _
NORMAL_PRIORITY_CLASS, _
ByVal 0&, _
vbNullString, _
si, _
pi)
If retval Then
'wait until the command line finishes
' trouble if the app doesn't end, or waits for user input, etc
WaitForSingleObject pi.hProcess, INFINITE

'read from the pipe until there's no more (bytes actually read is less than what we told it to)
Do While ReadFile(hRead, sBuffer(0), 64, lgSize, ByVal 0&)
'convert byte array to string and append to our result
strResult = strResult & StrConv(sBuffer(), vbUnicode)
'TODO = what's in the tail end of the byte array when lgSize is less than 64???
Erase sBuffer()
If lgSize <> 64 Then Exit Do
Loop

'close the handles of the process
CloseHandle pi.hProcess
CloseHandle pi.hThread
Else
Debug.Print "CreateProcess Failed" & vbCrLf
End If

'close pipe handles
CloseHandle hRead
CloseHandle hWrite

'return the command line output
RunCommand = Replace(strResult, vbNullChar, "")
End Function


Private Sub Command1_Click()
Text1.Text = RunCommand("cmd /c netstat -n")
End Sub