CentOS6.5与CentOS7 ssh修改默认端口号的方法

# sysctl -a|grep ip_local_port_range
net.ipv4.ip_local_port_range = 32768  61000

vi /etc/sysconfig/iptables

-A INPUT -p tcp -m state --state NEW -m tcp --dport 41134 -j ACCEPT
#service iptables save (保存防火墙配置)
#service iptables restart (重启防火墙)

# vi /etc/ssh/sshd_config

#service sshd restart

whereis ssh
ssh: /usr/bin/ssh /etc/ssh /usr/share/man/man1/ssh.1.gz
cd /etc/ssh
ll
nano sshd_config

-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 4211 -j ACCEPT

systemctl stop iptables
systemctl start iptables
systemctl status iptables

systemctl status sshd