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Sonicwall and PAP2 config

Posted on 2011-02-15
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Last Modified: 2012-06-27
Is there any special configuration considerations when using a PAP2 device from ViaTalk behind a sonicawall TZ100? What is a recommended config for sonicwall with Voip traffic?
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Question by:jrobinsontx
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Expert Comment

by:digitap
ID: 34899063
there shouldn't be anything, but if you do the place to make those changes is voip > settings.  you may need to enable consistent NAT or modify some of the SIP settings.  H.323 settings should be enabled by default.

i had a client who we could not get VoIP to work over the internet.  they would not give me access to their firewall until i insisted using various means.  once i got in, i realized they did not have h.323 enabled.  i believe i enabled consistent NAT, but can't recall.  i know the h.323 was key.
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Author Comment

by:jrobinsontx
ID: 34900029
Thanks for the reply. I contacted ViaTalk and they gave me the following info:

"Sonicwall routers have more features that could cause issues for the adapter. With proper port forwarding, and the disabling of the SPI firewall (Stateful Packet Inspection) and SIP ALG (application level gateway), the adapter should work properly behind it."

Any comments on their suggestions?
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digitap earned 1000 total points
ID: 34900106
if you disable those security services (SPI/ALG) you're disabling it for all of your hosts...not the best idea, especially if you are paying the yearly subscription fees to sonicwall.  what you should do, in that case, is create an exception for the device that is sending the voip traffic.

i think the notion here is the inspection made by these services on the sonicwall can cause latency or degrade the service.  it's a viable concern.  however, i have these services enabled on several sonicwalls and my client uses several Polycom HDX video conferencing solutions without any issue.

the link below is to several sonicwall KB links that will help you to configure the sonicwall correctly or troubleshoot if you encounter anything unusual.

http://rdsrc.us/2sw19C
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Author Comment

by:jrobinsontx
ID: 34900484
Thanks for the info.
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LVL 33

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by:digitap
ID: 34900600
you're welcome and thanks for the points!
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