查看端口是否對外開放

/etc/init.d/iptables status # /etc/init.d/iptables status 表格：filter Chain INPUT (policy ACCEPT) num target prot opt source destination 1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3306 2 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 3 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 4 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 5 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 6 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:443 7 DROP tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3306 8 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8 9 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 10 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 11 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 12 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22 13 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited Chain FORWARD (policy ACCEPT) num target prot opt source destination 1 REJECT all -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited Chain OUTPUT (policy ACCEPT) num target prot opt source destination You have new mail in /var/spool/mail/root

增加新的端口【永久】

vim /etc/sysconfig/iptables

增加

-A INPUT -p tcp -m tcp --dport 8888 -j ACCEPT # Generated by iptables-save v1.4.7 on Wed Oct 10 09:24:47 2018 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [774:133261] -A INPUT -p tcp -m tcp --dport 3306 -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m tcp --dport 8888 -j ACCEPT -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT -A INPUT -p tcp -m tcp --dport 3306 -j DROP -A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Wed Oct 10 09:24:47 2018

重啟后，即可看到開啟情況。

/etc/init.d/iptables restart # /etc/init.d/iptables status | grep 8888 5 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:8888 You have new mail in /var/spool/mail/root

總結

以上是生活随笔為你收集整理的Linux 增加对外开放的端口的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。