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Advanced Installation with Port Forwarding - Vonage VOIP Internet Phone

Ok I've changed my phone service from Verizon to Vonage to save some $ to my pocket. The setup takes a while due to my firewall configuration preventing Vonage to establish connection.

If you're geek enough to configure your cable modem, then here's a simple guide to customize your Firewall policy to allow Vonage service or VOIP service to go out. And if you can't configure your Firewall, I suggest that you get in touch with your local computer tech guys for assistance.

I have a cable modem SBG900 Surfboard Gateway configuring the firewall using the following policies:

Outgoing Policies
VONAGE_dns Port 53 UDP
VONAGE_tftp Port 21, 69, 2400 UDP
VONAGE_http Port 80 UDP
VONAGE_ntp Port 123 UDP
VONAGE_sip Port 5061 UDP

Incoming and Outgoing Policies
VONAGE_rtp (voice) traffic Port 10000-20000 UDP. When a call is made, a random port between 10000 and 20000 is used for RTP (Voice) traffic.
Post your comments.
Thank you.


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