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Cisco Bug: CSCur77189 - Provide ASA ability to strip or mask the X-Forwarded-For header fromHTTP

Last Modified

Apr 04, 2017

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

8.4(7) 9.1(5)

Description (partial)

Symptom:
Cu wants ASA to be able to strip out or mask the "x-forwarded-for" field of the HTTP header of the interested traffic before sending the packets to the internet, it is just for avoiding the private IP addresses to be announced in this header when packets are going out to internet.

Conditions:
The  "x-forwarded-for" field is present in the HTTP header of the packets just when customers have an HTTP  proxy in their internal network that has the "x-forwarded-for" feature enabled.
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