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Slackware IP Forwarding

Posted on 1997-07-05
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Last Modified: 2013-12-15
Hi.  I'm running Slackware 2.0 on a 386DX40, installed from the Infomagic Sept 96 CD set.  An application (TNOS) I run says I need to have IP Forwarding enabled in the kernel in order for it to talk to Linux. Since I haven't been able to make it work, I'm wondering if this is the problem.   My question is, how can I tell if IP Forwarding is in the kernel?  Also, how can I determine what kernel I have now?  If I have to upgrade the kernel, it means I need to install compilers and download the source code, which I can do but don't have enough free disk space.
Thanks for your help.
-Mark
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Question by:dexter
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handrich earned 200 total points
ID: 1628534
Hi Dexter

your first quedtion adresses ip forwarding. To find out if it is enabled you should also have the /proc filesystem compiled. many precomliled kernels have /proc filesystem enabled so you will find the file /proc/ksyms (it is no real file). If you don't find this file /proc was not enabled and this answer will not help.

So if the file is there you can find out if ip forward is enabled with the following command: cat /proc/ksyms | grep ip_forward

if you get back something like this

08154711 ip_forward

you have ip_forward aktivated.

your linux version is usualy displayed while booting, with the shift pg_up key you can scroll trough the bootmessages.

Precompiled kernels can be found at:
ftp://wcarchive.cdrom.com/pub/linux/slackware/bootdsks.144
ftp://ftp.delix.de/pub/Linux/Kernels
maybe you will find a kernel that meets your requirements

maybe have a look at http://www.linux.org

bye Michael
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by:dexter
ID: 1628535
Thanks.  I will check it out.  It should tell me what I need to know.  
-Mark
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