Linuxdoc Linux Questions
Click here to ask our community of linux experts!
Custom Search

6.1. Pitfalls

Here are just a few of the snags that I've run into while using this system. I put them here so that you can hopefully avoid them. If you run into any new ones, please email them to me so that I can keep track, and help others avoid them.

6.1.3. IPv4 Forwarding and 2.2 kernels

In the new 2.2 kernel, you must specifically enable IP forwarding in the kernel at boot up. This with the following command:

# echo 1 > /proc/sys/net/ipv4/ip_forward

Without this, the kernel will not forward any packets, and hence the server will not work, nor will any of the gatewaying clients.