[SOLVED] Problem with custom kernel and IPtables.

Tommyy · 08-31-2011, 12:13 PM

Hey. I am an Arch Linux user ( 64 bit ) and I am trying to compile a custom Linux kernel. I have done it successfully and it works for the most part but IPtables doesn't seem to want to work.

When doing IPtables -L I get this:

Code:

iptables v1.4.12: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

This was after I had changed some of the network settings in menuconfig. Before IPtables would work but I wouldn't be able to connect to the internet at all. I am not very good with firewalls...

By the way the kernel version is 3.0.4.

corp769 · 08-31-2011, 12:16 PM

Hello,

Do you have ip_tables loaded within your custom kernel? Try running the following, then run iptables -L to make sure that the ip_tables module is loaded:

Code:

modprobe ip_tables

Let me know what happens.

Cheers,

Josh

Tommyy · 08-31-2011, 12:20 PM

Ran as root and got:

Code:

FATAL: Module iptables not found.

I'm guessing I have to compile it as a module in menuconfig?

corp769 · 08-31-2011, 12:22 PM

Looks like you forgot the underscore... iptables and ip_tables are different things

Tommyy · 08-31-2011, 12:25 PM

Oops heh sorry about that. After doing modprobe ip_tables then iptables -L I get the same results as last time.

Code:

iptables v1.4.12: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

corp769 · 08-31-2011, 12:27 PM

Try following your output and run insmod with netfilter/iptables and see if it getting initialized in the first place.

Tommyy · 08-31-2011, 12:34 PM

I hope this is what you meant: insmod ip_tables?

Code:

insmod: can't read 'ip_tables': No such file or directory

Tommyy · 08-31-2011, 04:08 PM

I figured this problem out. It seems that IPtables wasn't the problem at all. Even when I enabled IPtables in the kernel it seems that Gufw/Ufw wasn't working with the kernel. So I manually set up IPtables and it worked. Weird.

corp769 · 09-01-2011, 08:19 AM

What do you mean you manually set it up? As in you compiled from source? Glad to hear you got it figured out. If it is officially fixed, mark your thread as solved for us, thanks!

Tommyy · 09-01-2011, 05:08 PM

Well I installed it from the repos with pacman but when I said manually set it up I meant that I didn't use Gufw/Ufw but I configured it from the terminal. Using the iptables command.