Guest

Preview Tool

Cisco Bug: CSCul68246 - ASA TCP Normalizer does not handle OOO TCP ACKs to the box

Last Modified

May 29, 2019

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

8.4 9.0 9.1

Description (partial)

Symptom:
Bad retransmissions from the ASA (to the box traffic) those retransmissions are triggered by an OOO TCP ACK.

Conditions:
-- ASA configured with a TCP server (HTTPS, SSH, Telnet).
-- Client communicating with the ASA through a Device that is monitoring TCP retransmissions.
-- TCP ACKs are not delivered in order.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.