telnet的问题

[heronism]

telnet到远端主机提示协议不匹配，如下。请教下产生这种现象的原因及解决方法，多谢。

SSH-2.0-OpenSSH_4.2
sfd
Protocol mismatch.

[zyq5945]

可以使用SecureCRT试试看，以前也见过有个AIX就是SSH Secure File Transfer Client连不上，就死认window的telnet

[wolflion]

你可能用的是21吧。具体不知道，呵呵

[weidong0210]

查看端口是否开启

[pluton]

ssh和telnet是有区别的，telnet是没有经过加密的，ssh有经过加密，
ssh可以连接telnet，而telnet不能连接ssh

[heronism]

端口开启了。

[yyyapple]

摘得：

You are using a tool (telnet) that doesn't know a thing about the SSH
protocol, so the server answers correctly stating that there is a
"Protocol mismatch". The only thing you can say with your test is that
the SSH server is alive.

To troubleshoot your problem, try connecting first from localhost using
"-vv" with the OpenSSH client. then try from a remote machine. Watch for
error messages in your system logs.
--
Saad Kadhi
"He who relieves the poor makes Ahura king"