[root@hqserv lizhenming]# ssh -v root@172.*.*.*
OpenSSH_4.3p2, OpenSSL 0.9.8b 04 May 2006
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 172.*.*.* [172.*.*.*] port 22.
debug1: connect to address 172.*.*.* port 22: Connection timed out
ssh: connect to host 172.*.*.* port 22: Connection timed out
[root@hqserv lizhenming]# 
[root@hqserv lizhenming]# service iptables status
防火墙已停