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Cisco Bug: CSCsz79758 - H323/NAT-Setup msg with SupportedFeatures extensions malformed after NAT

Last Modified

Apr 09, 2016

Products (1)

  • Cisco Catalyst 6500 Series Firewall Services Module

Known Affected Releases

3.2(11)

Description (partial)

Symptom:

H323 CS: Setup OpenLogicalChannel message is malformed after NAT translation. Specifically, the:
screenigIndicator
neededFeatures
desiredFeatures
supportedFeatures
Will be corrupted.

The supportedFeatures field will be replaced wtih h4501SupplementaryService.

Conditions:

This was first found on an FWSM running 3.2.11. Setup message includes the neededFeatures, desiredFeatures, supportedFeatures extensions when you look in the call setup packet.

NAT must be configured with H323 inspection.
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