Open port 80 of CentOS firewall

In the CENTOS virtual machine installed APACHE is not available, depressed, the solution is as follows/sbin/iptables-IINPUT-ptcp -- dport80-jACCEPT/sbin/iptables-IINPUT-ptcp -- dport22-jACCEPT and then save: /etc/rc. d/init. d/iptables & n

APACHE cannot be installed on CENTOS of a virtual machine. the solution is as follows:

/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

After the computer is restarted, ports 80 and 22 are enabled by default.

You may not restart the computer either here:

/Etc/init. d/iptables restart

Close the firewall and close its services:

View firewall information:

/Etc/init. d/iptables status

Disable the firewall service:

/Etc/init. d/iptables stop

Permanently Close? I don't know how to use the permanent method:

Chkconfig-level 35 iptables off