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Cisco Bug: CSCum69887 - Mis-acked tcp sequence with NAT and LDAP ALG

Last Modified

Feb 01, 2017

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

When there is SIP address in the message. NAT cann't handle the tcp sequence properly with LDAP ALG after pdu size changed.  NAT will not handle the delta value for the right ack message but thereafter messages, which may cause mis-acked message flows between two endpoints.

currently only seen with netmeeting 

Send LDAP traffic with empty comment item in LDAP ALG.
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