Anyone have a tool that a technician or customer could put on a computer on a customer's network, and it will tell them if a SIP ALG was disabled or enabled? Or if their network was suitable for SIP traffic?
We started deploying some Ubiquiti Unifi USG routers, and discovered that they had SIP ALG enabled by default. Typically we just put the Polycom VVX phones to register with TCP for signaling, and this bypasses most SIP ALGs as I think most can only handle SIP using UDP and not TCP right? Well I guess the SIP ALG used in the Ubiquiti Unifi USG does modify even SIP using TCP. I know Ubiquiti Unifi USG use a fork of the vyatta operating system, and the command to disabled it is set system conntrack modules sip disable We were able to turn SIP ALG off, and now everything is working fine. Would be great if there was a tool a low level tech or customer could use to test the network?
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