Visit Jeremy's Blog.
Go Back > Forums > Linux Forums > Linux - Security
User Name
Linux - Security This forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.


  Search this Thread
Old 09-21-2003, 10:52 PM   #1
LQ Newbie
Registered: Sep 2003
Posts: 1

Rep: Reputation: 0
Unhappy [ Invalid Argument on 'iptables' ]

I am using Gentoo Linux with Kernel 2.4.20-r7 with iptables v.1.2.8, I tried to execute a command :

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

iptables: Invalid argument <---------- I got this.

========== quoted from 'lsmod' ==========
ipt_LOG 3384 4 (autoclean)
ipt_MASQUERADE 1336 0 (autoclean)
iptable_filter 1740 1 (autoclean)
iptable_mangle 2136 0 (autoclean) (unused)

I checked the folder '/lib/modules/2.4.20-gentoo-r7/kernel/net/ipv4/netfilter' and found these modules on my Gentoo

-rw-r--r-- 1 root root 3436 Sep 21 17:05 iptable_filter.o
-rw-r--r-- 1 root root 3780 Sep 21 17:05 iptable_mangle.o

When I checked the same path with my SuSE 8.0 and got :

-rw-r--r-- 1 root root 3256 Mar 27 2002 iptable_filter.o
-rw-r--r-- 1 root root 3660 Mar 27 2002 iptable_mangle.o
-rw-r--r-- 1 root root 22263 Mar 27 2002 iptable_nat.o

It seems a module 'iptable_nat.o' is missing on my Gentoo; and I did not compile the kernel for my SuSE box -- the kernel from the original package. I am sure the 'iptables' relative options already chosen before I compiled the kernel.

I checked the 'How-To' and help for iptables and did not get any help.

Any help ?

Old 09-23-2003, 01:25 AM   #2
Registered: Aug 2003
Location: Seattle, Wa
Distribution: Fedora,Trustix,Debian
Posts: 290

Rep: Reputation: 30
I would probably recompile the kernel and make sure it has nat compiled as a module or built it


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Accept(): Invalid Argument bonhomme Programming 6 07-14-2012 11:12 PM
Iptables, invalid argument, problem with modprobe ivanatora Linux - Software 1 05-11-2005 06:55 AM
alsamixer invalid argument subaruwrx Linux - Software 1 03-12-2005 02:34 PM
KDSKBENT: Invalid Argument tommytomato Linux - Newbie 6 08-27-2004 11:23 PM
xawtv - invalid argument liguorir Linux - Software 0 06-17-2003 09:55 PM > Forums > Linux Forums > Linux - Security

All times are GMT -5. The time now is 03:36 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration