Utility to check if FW is SIP-friendly?

Question

Hi	If I got it right, some firewalls support SIP easily throughSTUN or UPnP, while others don't, requiring the use of fixed RTP portsand opening the ad hoc ports on the router.I noticed that some SIP devices, including the GrandStream GXP-2000and the SJPhone softphone report back the type of NAT router that sitsin front of the LAN where the device is sitting (in my case, "Portrestricted cone").Is there a stand-alone utility or web application that reports thisinformation, so as to make it easier to deploy SIP devices?Thank you.

Gilles Ganault · Accepted Answer

For those interested:  updated 2003-12-31, but it seems to work.

Hongtian · Answer

Please try miniSipServer which is a SIP server for windows. But it canbe STUN server at the same time.

Gilles Ganault · Answer

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

LRC™ · Answer

Try using netcheck.exe from FWD.

Gilles Ganault · Answer

Thanks.

Utility to check if FW is SIP-friendly?

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