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Suchi
Beginner

Establish a SIP trunk through a firewall

Hi,

 

I need to establish a SIP trunk through a firewall (Check Point)

 

UCM--SIP---CUBE---Firewall---ITSP

1. What are the ports need to open in the firewall

2. What are the  possible issue of the SIP trunk through a firewall?

 

Please advise

Suchi

1 ACCEPTED SOLUTION

Accepted Solutions
Georgios Fotiadis
Rising star

You should enabled SIP inspection on the firewall; that will take care port openings (for both signalling and media) and SDP headers.

 

In addition to that, for incoming call establishment, you should allow SIP signalling ports (TCP/UDP 5060) and define the corresponding static NAT entries to point to your CUBE (if CUBE is behind NAT and not in the DMZ).

Georgios
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1 REPLY 1
Georgios Fotiadis
Rising star

You should enabled SIP inspection on the firewall; that will take care port openings (for both signalling and media) and SDP headers.

 

In addition to that, for incoming call establishment, you should allow SIP signalling ports (TCP/UDP 5060) and define the corresponding static NAT entries to point to your CUBE (if CUBE is behind NAT and not in the DMZ).

Georgios
Please rate if you find this helpful.
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