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Group:  English: General » microsoft.public.windows.networking.firewall
Thread: VoIP behind another router

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VoIP behind another router
"Gregg Hill" <greggmhill at please do not spam me at yahoo dot com> 10/4/2008 11:13:26 PM
Hello!

I have a two-person company that is in an office suite that shares its
Internet connection with two companies in separate offices in the suite. All
cabling goes into one Linksys RV082 router. I want to put a firewall in
place to isolate this person's network from the shared network. Its WAN side
would be on the shared network's LAN side, then out to the Internet through
the main suite's Linksys RV082. Linksys has a doc
http://linksys.custhelp.com/cgi-bin/linksys.cfg/php/enduser/std_adp.php?p_faqid=16576&lid=
on cascading a VoIP router through its RV082, but I am wondering about
having another router/firewall in between the RV082 and the client's LAN.
VoIP would then go from the suite's ISP > RV082 > client firewall > network
switch with computers and the VoIP router connected only to phones, LAN
ports NOT used.

I know it is a Mickey Mouse setup...I hate shared networks, but it is not my
choice.

How does QoS tagging work in a scenario such as this one? If the Vonage VoIP
router (I don't know the model yet) has QoS, and it sits behind the RV082,
what happens to voice quality if someone on the RV082 LAN ports downloads a
huge file or watches a video? Would QoS-tagged packets be able to traverse
the VoIP router and also have QoS on the RV082 still prioritize the VoIP
packets?

Or am I just too thoroughly confused to word my questions properly?

Thank you for your time!

Gregg Hill


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