https://sigtar.com/tags/nat/ Recent content in Nat on sigtar.com Hugo en-nz Fri, 20 Feb 2009 00:00:00 +1300 https://sigtar.com/2009/02/20/linux-routing-examples/ Fri, 20 Feb 2009 00:00:00 +1300 https://sigtar.com/2009/02/20/linux-routing-examples/ <p>set ip_forward to 1 to enable routing between nics. type &lsquo;<strong>route</strong>&rsquo; to insure both networks are routed as expected (connected route added with nic)</p> <p>Setup a script with the following (<strong>CHMOD 0755</strong> the script so it executes)</p> <p><strong>iptables -F</strong> (clears previous iptables stuff) <strong>iptables -P INPUT DROP</strong> (will set default policy to DROP all INPUT packets - Incoming to local NICs) <strong>iptables -P OUTPUT DROP</strong> (will set default policy to DROP all OUTPUT packets - Outgoing to local NICs) <strong>iptables -P FORWARD DROP</strong> (will set default policy to DROP all FORWARDed packets - Routed via local NICs)</p>