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long live tcp session through ASA behavior

john-lam
Level 1
Level 1

An interesting issue came up for me.  I have an ACL that allowed host A to  Host B on port 636.  The firewall have a tcp session timeout of 2 hours.   Host A established a sesson with B did some transfer and went idle.  It then tried to send data again after 3 hours without going through TCP handshake (reusing the same source port).    Will the firewall allow it through even though it passed the session timeout ?     Does the firewall just matches the source IP, dest IP and dest port without looking to see if it see handsake?

 

Thanks in advance.   

 

1 Accepted Solution

Accepted Solutions

NO, after idle timeout the session is delete from FW and both Host need new handshake 

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1 Reply 1

NO, after idle timeout the session is delete from FW and both Host need new handshake 

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