I only want to know how iptables uses this option. For example 
--tpc-flags SYN,ACK,RST SYN  how is it then used? Am I right that the 
flags SYN,ACK,RST are inspected and only the SYN flag is allowed to be 
set? Or is it so that SYN,ACK,RST are inspected and the SYN flag must be 
set but the other are optional so that all can be set but only SYN has 
to be set? I´m a little confused :). And another question what flags 
cobos are allowed/not allowed. I only know about a few so SYN,RST set is 
an illegal set also SYN,FIN. Or SYN,ACK when initiating a connection.

Thank´s in advance for replies.

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PGP-ID 0xF8EAF138