[CentOS] Using a CentOS 6 Machine as a gateway/router/home server

Sun Jun 28 18:50:09 UTC 2015
Max Pyziur <pyz at brama.com>


I'm rebuilding a machine to function as a gateway/router to Verizon DSL.

It has two NICs eth0 and eth1 (static set to

eth0 connects to the DSL modem.

I've setup Verizon DSL usine pppoe-setup, and it works.

I can connect from home machines to the server (; while logged 
in to the server, I can connect to both the internet, and the home 

But ...

I can't connect from the home machines directly to the Internet.

I have set
net.ipv4.ip_forward = 1
in /etc/sysctl.conf

I haven't setup the firewall yet (dangerous, I know) until I get the 
connectivity working.

I'm obviously overlooking some other configuration settings required for 
machines inside the network being able to connect through the 

Thanks for any advice in advance.

Max Pyziur
pyz at brama.com