> > It accepts all other traffic to non-privileged ports. i prefer to > > allow traffic without the syn flag (not initiating a new connection) > > only, not all misc traffic, it's more secure, the way to do it is > > like: > > ipchains -A input -s 0/0 -d 0/0 1024:65535 -p tcp ! -y -j ACCEPT > > ipchains -A input -s 0/0 -d 0/0 1024:65535 -p udp ! -y -j ACCEPT > > > > unfortuantly this breaks irc, ftp and many other things.
It's also an error. The -y option is only valid for tcp connections. Since udp is a connectionless packet, that makes sense.
