Re: Red Hat 7.1 and Iptables

[Peter Lukas <plukas () oss uswest net>]

You need to load the iptables modules.  On a stock 7.1 install,

# modprobe ip_tables

Will do.  An 'insmod ip_tables' will also work.  Other modules are located
in /lib/modules/2.4.2-2/kernel/net/ipv4/netfilter.  RedHat's init will
look for your pre-defined rules in /etc/sysconfig/iptables.

You may also wish to remove the ipchains package entirely:

# rpm -e ipchains

Peter Lukas

On 11 Jun 2001, Martin Peikert wrote:

> Bill Asher <basher () schultz-design com> wrote:
>   > I'm running RedHat 7.1, kernel 2.4.2-2.  Does anyone know how to enable
>   > iptables instead of the default ipchains.
>   >
>   > I am trying to set up a firewall for a small business network 2 nics,
>   > eth0-internet, eth1 - LAN.  I'd like to begin using iptables,but am unsure
>   > how to enable iptables.  If I run command:
>   >
>   > iptables -L
>   >
>   > I get:
>   >
>   > /lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_tables.o: init_module:
>   > Device or resource busy
>   > Hint: insmod errors can be caused by incorrect module parameters, including
>   > invalid IO or IRQ parameters
>   > /lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_tables.o: insmod
>   > /lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_tables.o failed
>   > /lib/modules/2.4.2-2/kernel/net/ipv4/netfilter/ip_tables.o: insmod ip_tables
>   > failed
>   > iptables v1.2.1a: can't initialize iptables table `nat': iptables who? (do
>   > you need to insmod?)
>   > Perhaps iptables or your kernel needs to be upgraded.
>     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> Did you build your own kernel? If not, it would be better to do that now
> - and don't forget to enable iptables (at least as a module).
>
> HTH
> Martin
> --
> martin.peikert () innominate com
> project manager                                          innominate AG
> dipl.-math.                                  http://www.innominate.com
> tel: +49-30-308806-0 fax: -77   gpg: http://innominate.org/gpg/mpe.gpg
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