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Thread: basic firewall rules for iptables

  1. #1
    Junior Member
    Join Date
    Feb 2004
    Posts
    2

    basic firewall rules for iptables

    hello,
    while it is pretty easy to configure an ADSL/pppoe connection, there is no rules for iptables.

    It would have make sense to set up a basic firewall while configuring an adsl connection, would'nt it ?

    And furthermore, maybe i'am wrong but when i save my KNOPPIX configuration it does _not_ include the /var/lib/iptables/active and /var/lib/iptables/inactive files. Hey the /var/lib/iptables dir does not even exist by default. You have to create it !!

    for example
    Code:
    # Generated by iptables-save v1.2.9 on Fri Feb 20 14:00:16 2004
    *filter
    :INPUT ACCEPT [0:0]
    :FORWARD DROP [0:0]
    :OUTPUT ACCEPT [474:71447]
    :firewall - [0:0]
    -A INPUT -j firewall
    -A firewall -m state --state RELATED,ESTABLISHED -j ACCEPT
    -A firewall -i ! ppp0 -m state --state NEW -j ACCEPT
    -A firewall -j DROP
    COMMIT
    # Completed on Fri Feb 20 14:00:16 2004

  2. #2
    Senior Member registered user
    Join Date
    Mar 2003
    Location
    Germany
    Posts
    297

    Re: basic firewall rules for iptables

    Quote Originally Posted by zebul666
    hello,
    while it is pretty easy to configure an ADSL/pppoe connection, there is no rules for iptables.

    It would have make sense to set up a basic firewall while configuring an adsl connection, would'nt it ?

    And furthermore, maybe i'am wrong but when i save my KNOPPIX configuration it does _not_ include the /var/lib/iptables/active and /var/lib/iptables/inactive files. Hey the /var/lib/iptables dir does not even exist by default. You have to create it !!

    for example
    Code:
    # Generated by iptables-save v1.2.9 on Fri Feb 20 14:00:16 2004
    *filter
    :INPUT ACCEPT [0:0]
    :FORWARD DROP [0:0]
    :OUTPUT ACCEPT [474:71447]
    :firewall - [0:0]
    -A INPUT -j firewall
    -A firewall -m state --state RELATED,ESTABLISHED -j ACCEPT
    -A firewall -i ! ppp0 -m state --state NEW -j ACCEPT
    -A firewall -j DROP
    COMMIT
    # Completed on Fri Feb 20 14:00:16 2004
    Hi,

    feel free to send a patch to debian-knoppix@linuxtag.org for saveconfig ...

    The sources can be found on: http://developer.linuxtag.net/knoppix/

    cu

    Fabian

  3. #3
    Member registered user
    Join Date
    Jan 2003
    Posts
    44
    Hi Fabianx, I have done an firewall script generator in Xdialog for Kurumin, he works like an wizard: ask some questions and afther that generate the firewal script.

    http://www.guiadohardware.net/linux/...irewall-ativar

  4. #4
    Senior Member registered user
    Join Date
    Mar 2003
    Location
    Europe
    Posts
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    looks like a worthy addition to the CD...

  5. #5
    Junior Member registered user
    Join Date
    Mar 2004
    Posts
    27
    I agree.

    While a firewall script isn't so necessary for just booting Knoppix from the CD drive... AFTER A HD INSTALL it would make perfect sense to have one already set up.

    I know a few people who are clusers (clueless users) who have HD installs, and there is no firewall set up for them by default.

    As far as Knoppix install is concerned, it has to be the easiest Linux install I have ever done. So two thumbs up....!

    Now for this firewall please.........

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