Thanks for the info, Apologies for more questions. From my trace I see 5 SYN packets with a source port that should be in the time_wait state. I presume the dos feature should kick in 16 seconds after the first SYN is recived but Im not seeing the RST originate from the CSS until 3 minutes. Any clues to why ?
I haven't got access to the CSS at the moment, I will try and gain access and have a look. The trace is taken from the server side of the CSS, The client doesn't send the RST as the TTL is 127 which indicates it originated from the CSS. I do not see any SYN/ACKS being returned from the server only ACKS as the server believes this is still an active session.
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