CentOS firewall open port 80
I have searched a lot on the Internet and have not solved the problem. Here is the correct method:
#/sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
#/sbin/iptables -I INPUT -p tcp --dport 22 -j ACCEPT
Then save:
#/etc/rc.d/init.d/iptables save
If the above steps are still not working, it may be that the iptables file is using include calls.
Generally on the path /etc/sysconfig/iptables
Open this file and modify it manually.
Note that you need to restart the service: execute service iptabels save and service iptables restart
How to view ports:
[root@vcentos ~]# /etc/init.d/iptables status
Table: filter
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:80
2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80
3 RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0
Chain FORWARD (policy ACCEPT)
num target prot opt source destination
1 RH-Firewall-1-INPUT all -- 0.0.0.0/0 0.0.0.0/0