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Utility to check if FW is SIP-friendly?

Hi

If I got it right, some firewalls support SIP easily through STUN or UPnP, while others don't, requiring the use of fixed RTP ports and opening the ad hoc ports on the router.

I noticed that some SIP devices, including the GrandStream GXP-2000 and the SJPhone softphone report back the type of NAT router that sits in front of the LAN where the device is sitting (in my case, "Port restricted cone").

Is there a stand-alone utility or web application that reports this information, so as to make it easier to deploy SIP devices?

Thank you.

Reply to
Gilles Ganault
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For those interested:

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Last updated 2003-12-31, but it seems to work.

Reply to
Gilles Ganault

Reply to
Hongtian

Thanks, but I was just looking for a stand-alone client that I can send to people who are having problems with their IP phone, and check what kind of firewall they have.

Reply to
Gilles Ganault

Try using netcheck.exe from FWD.

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Reply to
LRC™

Thanks.

Reply to
Gilles Ganault

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