linux 系统防火墙端口开通方法

最新推荐文章于 2025-12-23 17:28:54 发布

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1 linux 系统防火墙端口开通执行命令

[root@hx1-gauss01 ~]#iptables -I INPUT -p tcp --dport 22 -j ACCEPT

[root@hx1-gauss01 ~]#iptables -I INPUT -p tcp --dport 80 -j ACCEPT

[root@hx1-gauss01 ~]#iptables -I INPUT -p tcp --dport 8002 -j ACCEPT

2 查看端口是否已开通

[root@hx1-gauss01 ~]# iptables -vnL
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination
  160 10944 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:22
   27  1764 ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            state RELATED,ESTABLISHED
    0     0 ACCEPT     icmp --  *      *       0.0.0.0/0            0.0.0.0/0
    0     0 ACCEPT     all  --  lo     *       0.0.0.0/0            0.0.0.0/0
    0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:12017
    1   136 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            state NEW tcp dpt:22
    0     0 REJECT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination
    0     0 REJECT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT 125 packets, 12540 bytes)
 pkts bytes target     prot opt in     out     source               destination
[root@hx1-gauss01 ~]#

3 启用防火墙

[root@hx1-gauss01 ~]# systemctl start iptables;

[root@hx1-gauss01 ~]# systemctl unmask iptables;

[root@hx1-gauss01 ~]# systemctl enable iptables;