On 21-Apr-98 Bangert, Michael P wrote:
> I have compiled kernel version 2.0.33 to include ip-forwarding, but I
> have read that you have to do something else to actually enable this.
> (I finally got the compile to work on a Cyrix processor - another story
>:/   )
> 
> 2 things I can't find enough info on:
> 
> 1. What is the 'netcfg tool'?  I am a new Linux user, and just can't
> find info on this.
> 2. I have read that /etc/rc.d/init.d will enable ip-forwarding, but I'm
> not sure what to do in that script.
> 
> What I am trying to do is get a ppp server working, and I don't think
> proxyarp is doing its job right now.
> 
> Thank you,
> _________________
> Michael Bangert
> [EMAIL PROTECTED]

If you compile your kernel with IP Forwarding included, then to enable that feature
you must cat a '1' into /proc/sys/net/ipv4/ip_forward. (The proc filesystem is
actually a gateway into the kernel's configuration).

In RedHat 5.0, the script /etc/rc.c/init.d/network will perform this cat for you
when the system boots up (You'll see "Enabling IPv4 packet forwarding" at boot-up)
IF you configure the system that way.

There are two ways to tell RedHat to do this:
run netcfg (the network tool in the control-panel in X) and check the 
"Network Packet Forwarding (IPv4)" button on the routing tab, OR
edit /etc/sysconfig/network and add the line
FORWARD_IPV4=yes

The next time the network script runs (at boot-up or when switching run-levels),
it will now enable IP Forwarding.

Note: all the netcfg does when you check that button is to add that line, it just
GUIfies the task for you.

Cheers,
---
Steve Borho <[EMAIL PROTECTED]>


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