Configure APF Firewall

A firewall is a very good idea for a server. Though many people think that a firewall is instant protection that will do everything it really is not. A firewall will help prevent some things but it is not going to stop everything. It is just one piece of the security network that is being woven. I recommend advanced protection firewall (APF) by rfxnetworks. APF will block unused outgoing and incoming ports. It can also be configured to use information from some block lists. The below port list will work for cPanel. For the other control panels you will need to add in the administration ports.


http://www.rfxnetworks.com/apf.php

-----command-----
cd /usr/local/src
wget http://rfxnetworks.com/downloads/apf-current.tar.gz
tar -zxf apf-current.tar.gz
cd apf-0.*
./install.sh
-----command-----

 

Now edit config file
-----command-----
pico -w /etc/apf/conf.apf
-----command-----

Scroll down to the "Common ingress (inbound) TCP ports section. At this point you need to find the correct configuration for your control panel.

 

-----cPanel -----
IG_TCP_CPORTS="20,21,22,25,26,53,80,110,143,443,465,993,995,2082,2083,2086,2087,2095,2096"
IG_UDP_CPORTS="21,53,873"

EGF="1"
EG_TCP_CPORTS="21,22,25,26,27,37,43,53,80,110,113,443,465,873,2089"
EG_UDP_CPORTS="20,21,37,53,873"



----Ensim -----
IG_TCP_CPORTS="21,22,25,53,80,110,143,443,19638"
IG_UDP_CPORTS="53"

EGF="1"
EG_TCP_CPORTS="21,22,25,53,80,110,443"
EG_UDP_CPORTS="20,21,53"



----Plesk -----

IG_TCP_CPORTS="20,21,22,25,53,80,110,143,443,465,993,995,8443"
IG_UDP_CPORTS="37,53,873"

EGF="1"
EG_TCP_CPORTS="20,21,22,25,53,37,43,80,113,443,465,873,5224"
EG_UDP_CPORTS="53,873"





Save the file and start apf via.
-----command-----
apf -s
-----command-----

If everything still works then edit the config file and turn dev mode off. Make sure you can start a new ssh session before changing dev mode off. If you are kicked out you need to go back and look at what caused the problem!
DEVEL_MODE="0"

Now restart APF
-----command-----
apf -r
-----command-----

  • 0 Users Found This Useful

Was this answer helpful?

Related Articles

Can I load balance servers that are behind a firewall?

Yes, in proxy mode your servers can live anywhere and as long as you can get to the real port you...

Hardware Firewall configuration

A Hardware Firewall is a network device that is connected upstream from a server. The Firewall...

How do I enable/disable my Iptables firewall?

To start IP tables on your RedHat server,# service iptables startYou can run the following...

Ranges to allow through server firewall

Frontend (public) network:Ports to allow:ICMP – ping (for support troubleshooting)All...

Brute Force Detection

BFD -- Brute Force Detection BFD is a shell script which parses security logs and detects...

Powered by WHMCompleteSolution