ISP Blocking 5060

hughmcl · Post by **hughmcl** » Sun Sep 21, 2008 2:55 am

I've had MagicJack working at home for a few weeks, then suddenly this weekend it's stopped working. I've not changed anything.

I've done some tracing and packet captures, it appears that my packets are going out ok, but I never get a response back. I've heard that ISPs are starting to block traffic coming in to port 5060. Probably because people are moving away from the ISP's VOIP service to others

Is there a way to change the source port that MagicJack runs on, so that the ISP won't block it? I like the service and want to keep using it, but can't until I get this solved.

Hugh

Post by **laserjobs** » Sun Sep 21, 2008 11:19 am

Magicjack uses port 5070

hughmcl · Post by **hughmcl** » Sun Sep 21, 2008 12:32 pm

Actually that's not correct.

MagicJack listens on the local port on UDP 5060, it talks to the magicJack servers to port 5070. Then the servers try to reply to the magicJack hardware to port 5060. This is the traffic that is blocked.

To find out what is listening on your computer:-

netstat -an You'll see that all your local machines IPs have :5060 UDP