Bug ID 788005: Bypass MRF SIP LB restriction of conversion from reliable transport (TCP) to unreliable transport (UDP)

Last Modified: Dec 13, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1

Fixed In:
15.1.0

Opened: May 30, 2019
Severity: 4-Minor

Symptoms

The SIP RFC states that if converting a message from a reliable transport to an unreliable transport, the proxy must guarantee delivery.

Impact

A system db variable was added to disable the TCP to UDP protection.

Conditions

A adminstator required conversion of SIP messages from TCP to UDP and was willing to forgo the delivery requirement.

Workaround

None

Fix Information

A DB variable has been added, Tmm.Sp.Sip.AllowTcpUdpConversion, possible values are enable|disable, the default value is disable. Enabling the DB variable enables the protection blocking TCP to UDP conversion for SIP messages.

Behavior Change