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Enterprise VoIP Planet: VoIPowering Your Office with Asterisk: Getting SIP through Firewalls, Pt 2

Oct 30, 2006, 01:00 (0 Talkback[s])
(Other stories by Carla Schroder)

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"Last week we looked at some ways to get standalone SIP clients past iptables NAT firewalls. Here's the executive summary: Every VoIP service has different requirements, so be sure to find the documentation for your particular service. But what about your Asterisk server? You have SIP clients that need attention too.

"First let's look at something that's a little easier: using IAX trunks. IAX is a more NAT-friendly protocol because it only needs a single port..."

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