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massrman Posted:
The devices are
available at
different price
margins , please
share your
estimated
...

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Topic:
IP PBX for small business
On Sep 30, 2016 at 00:48:03

massrman Posted:
Hi these are most
commonly used SIP
PBX interops and
their
configuration
guides,
...

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Topic:
IP PBX for small business
On Sep 30, 2016 at 00:37:45

Sammy00 Posted:
Has anyone setup a
W52p phone for
vonage? I have
a W52p with two
wireless handsets,
...

In The Forum:
Hard Wiring - Installation
Topic:
W52p Setup
On Aug 30, 2016 at 10:38:01

James44 Posted:
Hi, I am
looking for a good
Sip Trunking
provider in
Canada. they
should offer
...

In The Forum:
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Topic:
A good sip trunking provider
On Jul 17, 2016 at 23:42:46

James44 Posted:
Which network
connection do you
use?
...

In The Forum:
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Topic:
Wireless Access Point plugged into switch
On Jul 13, 2016 at 22:55:00

jjatsk Posted:
We are renting a
few offices right
next door to our
main building. I
have a wireless
...

In The Forum:
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Topic:
Wireless Access Point plugged into switch
On Jul 09, 2016 at 12:00:54

Pman Posted:
Hello, While
Vonage has been a
great service over
the years, it is
time to part
...

In The Forum:
LNP – Local Number Portability
Topic:
Cannot port phone number to new carrier - repeated failures
On Jul 05, 2016 at 09:12:07

jbugz67 Posted:
We recently
purchased 5
Polycom VVX 300
phones from
Vonage, and have
regretted
...

In The Forum:
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Topic:
Nothing but problems with VVX300
On Apr 15, 2016 at 14:58:07

RichardPi Posted:
Hello, does
anybody recollect
how to get into
wifi password from
diggings router?
...

In The Forum:
Hard Wiring - Installation
Topic:
How to arrive at wifi password?
On Mar 31, 2016 at 02:39:07

RichardPi Posted:
Hello, does
anybody know how
to get into wifi
watchword from
home router?
...

In The Forum:
Hard Wiring - Installation
Topic:
How to be noised abroad wifi password?
On Mar 30, 2016 at 18:48:05


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exigent
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PostPosted: Thu Jul 17, 2008 10:59 pm    Post subject: DNS timeouts when adapter is behind router. Reply with quote Back to top

If you havn't updated your router lately you may not know this is a problem yet. DNS was recently patched to respond on a random udp port. The problem is Vonage adapters need to have ports 10000-20000 udp forwarded to them. A decent portion of DNS upd packets meant for the other machines on the LAN get dumped to the Vonage adapter resulting in DNS timeouts for the computers on the LAN. This is only an issue if your Vonage adapter lies behind your router. Tech support says to connect the Vonage adapter directly to the modem. Does anyone else here think this is unacceptable? I personally need to be able to route traffic for several services with only one NAT hop. Id imagine there are actually several services that cant jump two virtual ip's.

Additionally, some people connect to the internet with a modem/router combination unit. If you have such a device you WILL loose udp packets meant for other machines if you forward 10k-20k udp to the Vonage adapter. I think many people with DSL lines use a device like this. Also, several cable companies use a device that provides routing/modem in one unit. You will receive a DNS timeout about 15% of the time with any of these configurations.

For those who don't understand a dns timeout.... When you open your internet browser and type www.google.com. Your machine sends a request to the dns server saying "what is the address associated with www.google.com?" The dns server responds to you via a random port (possibly between 10000-20000 which Vonage uses) saying "the address is 199.199.199.199" your computer then connects to that particular address. When you get a screen that says something like "Address not found" you have run into this problem. As more DNS servers are patched more and more of you will run into this issue... that is unless you connect your Vonage adapter DIRECTLY to the internet as in your adapter has a "real" ip address. You may even find that Vonage adapter/router appliances have the same problem.
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trekologer
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Joined: Dec 04, 2005
Posts: 350

PostPosted: Fri Jul 18, 2008 6:13 am    Post subject: Reply with quote Back to top

You should not need to forward UDP 10000-20000. The upstream router just needs to not explicitly block them.
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Darrell_G
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PostPosted: Fri Jul 18, 2008 8:31 am    Post subject: Reply with quote Back to top

There is a flaw with dns name servers where if you're not protected it could allow a hacker to take over the internet and forward users to impostor sites. To find out if the DNS server you use is susceptible to this flaw, head over to http://www.doxpara.com and run the DNS Checker. If you find that you are vulnerable to this flaw, you can use opendns servers. For more information on opendns, go to http://www.opendns.com

exigent, if your DNS servers are safe from this flaw there is no need to put your Vonage adapter ahead of your primary router. My Vonage adapter (V-Portal) is behind my primary router (WRT54GL) and all is well.
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