On Sun, 2006-02-05 at 13:58, Douglas Phillipson wrote: > > > >>My LUG recently had to move to a Library with WIFI access only. Running > >>FC4 on my HP Pavilion laptop, how specifically, can I bridge my WIFI > >>interface (eth1) over to my eth0 interface so I can hook in all the > >>wired ethernet users to get access to the WIFI networks DHCP server? I > >>don't have to recompile a Kernel I hope... I can still use my laptop > >>normally while I'm bridging for everyone else I hope? > > > > > > A simpler approach that is also more likely to work would be > > to set up a different private address range on the wired side > > and a dhcp server for it, then route and NAT to the wireless > > interface. The only tricky part is that you either have > > to run your own caching dns server and point the dhcp clients > > to it, or you'll have to pick up the DNS server you receive > > from the wireless DHCP and edit your dhcpd.conf to pass that > > on to the clients. > > > > The magic part I don't know how to do is "route and NAT". Can you > point me to an example on how to route and NAT between interfaces? Is > this a IPTables thing? You just need to: modprobe iptable_nat iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE echo 1 > /proc/sys/net/ipv4/ip_forward And make sure any other firewalling lets what you need through. You should get a default route via dhcp on the wireless side and one will be added by the netmask for your private wired side so you don't need to add any extra routes. -- Les Mikesell lesmikesell@xxxxxxxxx
