Dlink VTA Works Intermittantly Unless Setup With DMZ

Posts: 5 · New Forum Member Joined: Jun 24, 2006 Posts: 5

Does anyone have an idea what ports need to be forwarded to the VTA?

I've tried 2 different VTAs behind several different routers, and the VTA never works for more than 12 hours or so unless it's setup to DMZ.

Vonage support can only tell me to leave the VTA in DMZ, which is not acceptable to me.

Posts: 4751 · Vonage Forum **MVM** Joined: Aug 30, 2005 Posts: 4751

aoverify wrote:

Does anyone have an idea what ports need to be forwarded to the VTA?

I've tried 2 different VTAs behind several different routers, and the VTA never works for more than 12 hours or so unless it's setup to DMZ.

Vonage support can only tell me to leave the VTA in DMZ, which is not acceptable to me.

I don't blame you for not finding that acceptable, because it shouldn't be necessary and you shouldn't have to forward ports as long as they're left open. Could it be a firewall issue?

Posts: 9 · New Forum Member Joined: May 13, 2005 Posts: 9

I have a D-Link vta behind a D-Link DGL 4300 and don't have any problems at all. Only ports forwarded are UDP 10000-20000. Much more stable and better sound quality than the RT31P2 that I had before.

Posts: 5 · New Forum Member Joined: Jun 24, 2006 Posts: 5

Pomeray wrote:

Only ports forwarded are UDP 10000-20000. .

Only Ten-Thousand ports forwarded?!?

Posts: 5 · New Forum Member Joined: Jun 24, 2006 Posts: 5

Steve48 wrote:

Could it be a firewall issue?

I thought the only real firewall protection offered by most consumer level routers was NAT?

Posts: 72 · Full Forum Member Joined: Jun 15, 2006 Posts: 72

aoverify wrote:

I thought the only real firewall protection offered by most consumer level routers was NAT?

NAT is not firewall protection. It offers very little protection, especially for Windows machines. Anyone on the same WAN segment (think neighborhood cable Internet service) can see anything coming from your NAT router. If, for example, you have a Windows PC advertising itself, anyone on your segment can hook up a Windows PC to a cable modem and see your PC and any shares it is advertising. Many users have older versions of Windows with no protection enabled, and they are easy pickings in this scenario.

Posts: 533 · Posted: Fri Jun 30, 2006 7:41 pm Post subject:

Pomeray wrote:

I have a D-Link vta behind a D-Link DGL 4300 and don't have any problems at all. Only ports forwarded are UDP 10000-20000. Much more stable and better sound quality than the RT31P2 that I had before.

That's not even necessary. You shouldn't have to do any port forwarding for Vonage to work.

Posts: 30 · Vonage Forum Junior Joined: Jul 03, 2006 Posts: 30

aoverify wrote:

Vonage support can only tell me to leave the VTA in DMZ, which is not acceptable to me.

May I ask why putting the VTA in the DMZ is not acceptable to you? What harm would it do? There will only be voice traffic through the device, to only that IP. That device has no router capabilities and even the configuration interface isn't really vulnerable to any outside source.

Posts: 5 · New Forum Member Joined: Jun 24, 2006 Posts: 5

shamoo wrote:

May I ask why putting the VTA in the DMZ is not acceptable to you? What harm would it do? There will only be voice traffic through the device, to only that IP. That device has no router capabilities and even the configuration interface isn't really vulnerable to any outside source.

Nothing is invulnerable. If and item can be built it can be reverse-engineered, hacked, etc.

Posts: 30 · Vonage Forum Junior Joined: Jul 03, 2006 Posts: 30

aoverify wrote:

Nothing is invulnerable. If and item can be built it can be reverse-engineered, hacked, etc.

This is true. If you're worried.....

Vonage uses SIP ports 5060 and 5061.
TFTP ports (for downloading configuration files) 69, with failovers of 23 and 2400.
Port 80 (standard HTTP) for firmware updates
Port 53 for DNS
And RTP ports 10000-20000 for voice traffic.