RoS 5.2: connection tracker on bridge blocking SIP and H.323

iDen · May 16, 2011, 12:54pm

In RoS v5.2, if enable Connection Tracker on bridge interface, it starts blocking SIP and h.323’s established TCP connections are dropped also.

So:
After enabling Connection tracker on interface, SIP and H.323 calls stop working.

Annoying…

kirshteins · May 16, 2011, 1:35pm

Try disabling SIP and H.323 helpers in

/ip firewall service-port

section instead of disabling connection tracking. Is NAT applied twice to this traffic?

iDen · May 16, 2011, 1:53pm

Thanks i’ll try disabling helpers.
No NAT at all, bridged network

sprovo · May 20, 2011, 12:40pm

The same for me! Chased the issue for a week! Strangely this particular problem only affected extensions calling VOIP phones.

RB1100AH with ROS 5.2