Here is a method I use to frustrate people trying to nab my wifi connection using iptables (wireless router -> linux router -> dsl -> net). The wireless router in setup with a basic NAT for my desktops and wireless but the wireless comes in on its own nic. with prerouting set to drop, I have [1:56] -A PREROUTING -m ttl --ttl-eq 202 -j ACCEPT
echo 204 > /proc/sys/net/ipv4/ip_default_ttl on my laptop init -- [email protected] mailing list
