vi /etc/sysconfig/iptables
如:-A INPUT -m state –state NEW -m tcp -p tcp –dport 139 -j ACCEPT(允许139端口通过防火墙)
-A INPUT -m state –state NEW -m tcp -p tcp –dport 445 -j ACCEPT(允许445端口通过防火墙)
特别提示:把规则添加到防火墙配置的最后一行,会导致防火墙启动失败。
其余服务的端口号可以修改进去即可
正确添加好之后防火墙规则如下所示:
######################################
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 23 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 25 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 139 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 445 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 1723 -j ACCEPT
-A INPUT -m udp -p udp –dport 137 -j ACCEPT
-A INPUT -m udp -p udp –dport 138 -j ACCEPT
-A INPUT -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
#####################################
/etc/init.d/iptables restart #最后重启防火墙使配置生效