> But what, exactly, is the question? I'm not sure after your question. The following error "iptables: target problem" comes, if i enter this rule in a user-chain: iptables -t nat -A first_group -s a.b.c.d -d x/y -p tcp --dport 10001 \ -j DNAT --to-destination 1.2.3.4:25 her are my version and modules: uname -r --> 2.4.20 iptables -V --> v1.2.8 lsmod --> ipt_REJECT ipt_REDIRECT ipt_limit ipt_LOG ipt_multiport ipt_state ipt_MASQUERADE iptable_filter iptable_nat ip_conntrack_ftp ip_conntrack ip_tables after your asks i made a test on a other maschine. what an miracle, the same rule works fine. and here my question again. what kind of modul is missing to me? best regards Jan
