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  1. #1

    RHL 9 build-in firewall vc IPTables

    Hi all,

    This is my first post here, and I am a newbie to Linux. I did a lot of research on IPTables, and the more I read, the more I find it is very interesting. It is like a whole new world to me.

    Currently, I am building a RHL 9 FW in this environment,

    LAN <-> RHL 9 FW <-> 5-port switch <-> ADSL modem <-> Internet

    After I install RHL 9, I notice this is a firewall setting undert System -> Security. Is this the firewall for the box itself (like the build-in FW in Windows XP), or I can use it for LAN FW as well? What setting I should put it on? High? Or Medium is good enough?

    For IPTables, I found a lot of information online, which I started to feel overloading with all the sample scripts. I am wondering how you started to learn all those things. By playing around with different settings?

    Thanks for your inputs!

  2. #2
    Linux Guru
    Join Date
    Apr 2003
    London, UK
    I learned by reading a book on firewalls and iptables published by redhat press.

    The firewall options you talk about there i believe is for a host based firewall, its not really for the rest of your LAN.

    Check the redhat online documentation which will proberly have a bit of info about the firewall GUI somewhere:


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