# 4.5. Set up iptables

Set up for packet filtering.

At the initial condition, the access to the web server is controlled. The following shows how to set up for access permission.

| **\[root\@xoonips-server \~]# vi /etc/sysconfig/iptables**                         |                                          |
| ---------------------------------------------------------------------------------- | ---------------------------------------- |
| Copy the line below.                                                               |                                          |
| **-A RH-Firewall-l-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT** |                                          |
| ↓ Change the "22" in the line to "80".                                             |                                          |
| **-A RH-Firewall-l-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT** |                                          |
| **\[root\@xoonips-server \~]# /etc/init.d/iptables restart**                       | ← Restart the packet filtering software. |


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