Hi this is my problem: + iptables -t mangle -A PREROUTING -i eth1 -j TTL --ttl-inc 1 iptables: No chain/target/match by that name modprobe ipt_ttl is in my script. But this does only match ttl targets. According to http://cert.uni-stuttgart.de/archive/usenet/comp.os.linux.security/2002/08/m sg00458.html there should be two ttl modules in /lib/modules/2.4.18-4GB/kernel/net/ipv4/netfilter/. ipt_TTL for the target ipt_ttl for matching. ipt_TTL isnt in the modules directory. How am I going to get this to work? Thanks, Philipp