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Cisco Bug: CSCur18171 - Ace X-Forwarded-For rewrite breaks for the subsequent flows

Last Modified

Sep 11, 2019

Products (1)

  • Cisco ACE 4700 Series Application Control Engine Appliances

Known Affected Releases

3.0(0)A5(3.0)

Description (partial) 

Symptom:
The ACE is configured with ssl termination, persistence rebalance and

action-list type modify http ACTION-INSERT-SSLINDICATOR-REWRITEXFF
  header rewrite request X-Forwarded-For header-value "(.*)" replace "%1, %is"

Conditions:
The header for the first request that contains "X-Forwarded-For" is modified. The 2nd request on the same connection does not make it out of the ACE until the server terminates the connection with a SYN.
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