[VoiceOps] What does an ALG actually do?
johnl at taugh.com
Wed Feb 27 16:33:04 EST 2013
I realize that an ALG is a hack in a router that is supposed to allow
SIP packets to go through a NAT router. I also realize that for
modern SIP equipment, ALG usually causes more problems than it solves,
and that it's described in RFCs 2663, 3424, and others.
What I can't find anywhere is what a SIP ALG actually does to the
packets. Is that written down anywhere, or is it just network
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