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Cisco Bug: CSCsz84562 - H323 inspection not openning pinholes for RTCP packets

Last Modified

Jan 09, 2017

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

8.0(4)

Description (partial)

Symptom:
During videoconferencing messages similar to following syslog can be seen in the logs:
%ASA-4-106023: Deny udp src outside:10.1.1.1 dst inside:10.2.2.2/49177 by 
access-group "outside_access_in" [0x2c1c6a65, 0x0]

The video conference progresses normally.

Upon inspection those are RTCP packets for which no pinhole in firewall policy was open. 
Conditions:

PIX/ASA 8.x
h323 inspection enabled.
Restrictive interface policy.
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