[Asterisk-Users] Linux Firewall Question

[OMS]

Hi,
I am running Asterisks on Public IP with Fedora Core 3. 

What is the recommendation for making Linux secure on the Public IP since I am new to Linux. Which Firewall should I use?  I am not intending to use Linux as router. 

Can any one provide some configuration documentation. 


Obaid Siddiqui.
Network Engineer,
Prizm Communications, LP

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