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Cisco Bug: CSCsy96665 - TCP Proxy Blocking Packets and Replying with Zero ACK After Failover

Last Modified

Nov 08, 2016

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

7.2(4.31)

Description (partial)

Symptom:
When using Adaptive Security Appliance (ASA) or PIX Firewall 7.x software, certain connections subject to application inspection (for instance, Skinny) may reset and reestablish after a failover event with with Stateful Failover operating properly.

Conditions:
Application inspection enabled for the given connection.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
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