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Cisco Bug: CSCte67815 - DOC: syopt connection timewait enforced after RST

Last Modified

Feb 22, 2018

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases


Description (partial)

Symptom: Currently, the command reference for the 'sysopt connection timewait' only indicates that it will force each TCP connection to linger a shortened TIME_WAIT state of at least 15 seconds after the final normal TCP close-down sequence.

It has been confirmed by development that a RST packet(not a normal TCP close-down sequence) will also trigger the 15 second delay. The firewall holds on to the connection for 15 seconds the last packet on conn (either FIN/ACK or RST). This should be mentioned in the doc.

'sysopt connection timewait' enabled
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