Last Modified: Jul 12, 2023
Affected Product(s):
BIG-IP CGN
Known Affected Versions:
11.5.1, 11.5.0, 11.4.1, 11.4.0, 11.3.0
Fixed In:
11.6.0, 11.5.2
Opened: May 30, 2014 Severity: 2-Critical Related Article:
K16229
SIP sessions fail to setup media flows.
SIP media sessions are not established.
This occurs under the following conditions: -- SIP-ALG is configured on a virtual server. -- SIP client and server exchange more than one INVITE, and the second INVITE has a new cseq number. This can happen when the Proxy is requiring authentication from the client.
None
SIP-ALG now keeps track of the second INVITE and sequence number and recognizes the 200OK.