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agreed dingy
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Bruafekkay Posted:
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Im trying to add
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Had a call from a
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The devices are
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Hi these are most
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chameleon
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Joined: Feb 28, 2006
Posts: 22
Location: Cape Canaveral

PostPosted: Wed Sep 06, 2006 9:20 pm    Post subject: Opening ports in NetGear's CG814WG v2 router for Vonage VoIP Reply with quote Back to top

Hi all,

I recently upgraded to a NetGear CG814WG v2 Modem-&-Router, with my Vonage softphone account. The NetGear is all that my ISP (BrightHouse/Road Runner) offers for wireless home networks.

When I call my PC via the softphone account, it doesn't work.

NetGear tech support sent me to a page that lists the ports which must be opened to cure the problem; at the top of this page is the following caveat.

"All NETGEAR router ports are closed by default to incoming traffic"

Worse, the page states that Vonage uses Ports 5060 - 5070, and, Ports 10000 - 25000.

Yikes!

At first, NetGear's tech's told me I had to "Open" the correct ports by using port forwarding, entering the same port # for each Start Port and End Port in the port forwarding config. section. However, a venerable and reliable member of this forum tells me this is probably not the answer, and neither is "Port triggering" which was NetGear's 2nd suggestion.

Can anyone help..??
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xcrunxc
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Joined: Aug 04, 2006
Posts: 414
Location: New Jersey

PostPosted: Wed Sep 06, 2006 9:33 pm    Post subject: Reply with quote Back to top

Instead of forwarding all of those ports, you can try a quicker solution of just putting your computer into the DMZ of your router/modem. This is easier to set up, and will be a much quicker test to see if this is really the issue. Putting a computer into the DMZ of the router, effectively forwards every port to it. If the router gets a request that it doesn't know what to do with then it will pass it on to the computer to handle, this would include any incoming Vonage packets. While this could be a security risk in the long run, doing it just for testing here should be just fine.

Here is what steps the Netgear page shows to enable DMZ on your particular device:

To assign a computer or server to be a Default DMZ server, follow these steps:
1. Click WAN Setup link on the Advanced section of the main menu.
2. Type the IP address for that server. To remove the default DMZ server, replace the IP address
numbers with all zeros.
3. Click Apply.
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chameleon
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Joined: Feb 28, 2006
Posts: 22
Location: Cape Canaveral

PostPosted: Fri Sep 08, 2006 9:41 am    Post subject: Setting computer to be the default DMZ host Reply with quote Back to top

Hi xcrunxc,

I followed your advice, went to the NetGears' configuration utility, and set my computer's IP Address to be the default DMZ host.

It didn't seem to work - however, your post advises me to

Quote:
Click WAN Setup link on the Advanced section of the main menu.
2. Type the IP address for that server."


xcrunxc, I don't have a "WAN Setup" in the menu options.
( I've included a screenshot of my config optionshere )

Is there something I didn't do correctly, or somewhere else i should re-configure .. ??

TIA, very, very much.
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xcrunxc
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Posts: 414
Location: New Jersey

PostPosted: Sat Sep 09, 2006 11:36 pm    Post subject: Reply with quote Back to top

No, what you did was correct for your device as far as I can tell. It appears the firmware was just a little different then the version I was looking at on Netgear's site. What exactly is happening when you try to call your softphone? Are you able to make outgoing calls on your softphone? Did the softphone work on your network prior to switching to the Netgear device?
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trekologer
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Joined: Dec 04, 2005
Posts: 350

PostPosted: Sun Sep 10, 2006 12:04 pm    Post subject: Re: Opening ports in NetGear's CG814WG v2 router for Vonage Reply with quote Back to top

I am not famililar with the Road Runner version of that cable modem router but on the Comcast version, the options that you need to disable are not even configurable.

On another note, you're probablly paying an additional $5-$10 per month for the privledge of having that cable modem router, right? At best, you've got there a $20 router that has pretty much no features, making it not very useful. Honestly, you're better of getting Road Runner to swap out that piece of junk for a normal cable modem and getting your own wireless router. You'll be much happer and after a couple of months its paid for itself.
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chameleon
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Joined: Feb 28, 2006
Posts: 22
Location: Cape Canaveral

PostPosted: Sun Sep 10, 2006 3:29 pm    Post subject: Softphone before & after installing NetGear modem/router Reply with quote Back to top

Hi xcruncxc:

xcrunxc wrote:
. What exactly is happening when you try to call your softphone? Are you able to make outgoing calls on your softphone? Did the softphone work on your network prior to switching to the Netgear device?


The wireless network came with the router; before this I just used a cable modem to one machine.

When I call the softphone, I get approx. 3 seconds of audio then everything "dies". But there's another factor I haven't brought up; The calls that are faliing... are from my Vonage landline ATA box to the computer via the softphone account - a venerable & reliable member of this forum tells me:

"... If you have two Voip clients who are trying to connect peer-to-peer on a local network, but they are using the Internet IP address, then that request is sent to the outside of the router (the Internet side). The router sees that the request should go back inside, so it tries to route it back in, but THERE HAS BEEN NO REQUEST to match it to. Best case, the router routes the request back to the originator, which means your Voip line starts talking to itself (pretty silly); worst case the packet is just thrown away.... Unfortunately, with most Voip solutions, the SIP port is generally the same for all devices.
So if you have two of them, you cannot forward a single port to both..
"

The Vonage ATA box folks use for landlines behind their Internet connections are, unfortunately, just Vonage softphone accounts that have ATA boxes to replace the PC that the softphone accounts reside on. They use the same "gateway", and what I'm beginning to believe is also part of the problem is this:

The Vonage "Gateway" in NY,NY sees an incoming call from a Vonage number, says "Aha! This is a Vonage-to-Vonage call, I'll just shuttle it straight from the 'outbound_to_POTS' server over to the 'inbound_to_Vonage_softphone' server.."
And therefore, my NetGear modem-router is running into the problem described above.

There's a little more to the "story" than just my private experiments; I'm also employed by company who is having me test various types of user broadband configurations.

This is a big hurdle; the BrightHouse Networks and/or Time-Warner's Road Runner Divisions are switching solely to these NetGear modem-routers which, as *trekologer states above, are apparently pretty much junk. (In more ways than one - mine drops wireless connections to the other computers constantly)

There are probably hundeds of thousands of BHN/T-W customers out there who are using or will be using these "default" NetGear modem-routers; I'm hoping to pre_de-bug various issues future customers will run into.

So far, no real luck. And BTW, thanks to both of you for your responses.

Does anyone have any ideas at this point .. ??
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trekologer
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Joined: Dec 04, 2005
Posts: 350

PostPosted: Sun Sep 10, 2006 7:46 pm    Post subject: Reply with quote Back to top

The problem is the stateful packet inspection firewall contained in the modem/router. It is not disable-able (at least on the versions that I have worked with). The fact that you get approximately 3 seconds of audio demonstrates that the audio stream does come through; it does not matter whether or not it is any paticular type of call. The modem/router is looking at the data stream and cutting it off. Its like tripping a circuit breaker, the overloaded current gets through for a couple seconds before the breaker trips. Port forwarding/DMZ does nothing because all the traffic still goes through the SPI.
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chameleon
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Joined: Feb 28, 2006
Posts: 22
Location: Cape Canaveral

PostPosted: Sun Sep 10, 2006 7:57 pm    Post subject: Reply with quote Back to top

Hi Trekologer;

A reliable person told me "some firewalls see Vonage as a "flood attack" and start blocking the packets" - is this possibly what the NetGear is doing .. ??

Is there a way around this, do you think?

Additionally, just to be very clear, I get maybe 3 seconds of audio the 1st time I call my softphone/computer. The 2nd time, it reduces to 1-2 seconds. Third call - a tiny blip of audio.

Is this consistent with SPI conflicts .. ??

(Thanks for the reply)
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xcrunxc
Vonage Forum Evangelist
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Joined: Aug 04, 2006
Posts: 414
Location: New Jersey

PostPosted: Sun Sep 10, 2006 8:06 pm    Post subject: Reply with quote Back to top

Yes, that is very consistent with SPI problems with Netgear devices. There is an old thread about it here http://www.vonage-forum.com/ftopic751.html which explains more about it. If you cannot disable SPI then it appears you may be out of luck for using your softphone from that connection.
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portlandse
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Joined: Nov 23, 2006
Posts: 2

PostPosted: Thu Nov 23, 2006 2:32 pm    Post subject: Motorola VT2442 and Netgear CG814WG not compatible? Reply with quote Back to top

I have been using Vonage Motorola VT2442 with a regular cable modem through Comcast for a while with no problems. Last week, they installed a Netgear CG814WG wireless cable modem gateway, and now my calls won't connect. I spent over 7 hours on the phone yesterday with Vonage, Netgear and Comcast. We adjusted the bandwith. We added the Vonage device to DMZ. We did Port Forwarding from 10000 to 25000 and, finally, another one from 5061 to 5061 (??). It worked for about 5 minutes, but this morning the lines are again not working.

Here is my set up: I have the cable line going into the Netgear modem, and a PC connected directly to that modem. Then I have the Vonage device connected to the modem. I have two laptops (one Dell, one Mac) that are wireless connected. My internet connections are all working fine. The phones just ring and dial, and the calls seem to connect, but there is no sound on either side at all.

I've been looking at the installation instructions and can't figure out if the Vonage device should be between the modem and the PC, and Vonage didn't seem to really know either.

One last thing: I just found on the Vonage site the following bit of info- "To see if your cable modem is compatible with Vonage, select the modem's manufacturer from the drop-down list below. If your modem is not listed, then your modem will work with Vonage. If your modem is listed as 1.0, please contact your internet service provider to replace your modem iwth one that uses version 1.1 or 2.0."

Netgear is listed. Under Model there is listed CG814W (not CG814WG--is that the same thing?) and next to that model is 1.0.

Should I just be asking Comcast for a new compatible modem using the right version?

(I am pretty computer illiterate and would appreciate any help I can get!)
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