On Thu, Mar 15, 2007 at 09:47:18PM +0000, Eur Ing Chris Green wrote:
I'm investigating my FC6 to home problem and it looks as if my router may be blocking some of the traffic, trouble is I don't know what the message means. The router log is saying:-
FIREWALL fast tcp seqnr check (1 of 2): Protocol: TCP Src ip: 192.168.1.1 Src port: 22 Dst ip: 193.128.168.194 Dst port: 51097Does anyone have a clue what that indicates? The destination is certainly the work system (193.128.168.194).
Well, I have fixed the problem by disabling one of the checks that my router/firewall does at home.
It used to do 'firewall config tcpchecks=fast', I have changed it to 'firewall config tcpchecks=none' and now eveything works from the FC6 system.
I *think* that my firewall is checking the sequence numbers of outgoing TCP packets and, for some reason, the ones from the FC6 system are out of sequence. I don't think disabling this check will influence security to a huge extent.