[asterisk-users] A linksys SPA921 behind NAT and firewall

[joakimsen at gmail.com]

Did you set "NAT Keep Alive Enable: = Yes" for the line in question in
the SPA's configuration?



On 10/18/07, Per Jessen <per at computer.org> wrote:
> I've got someone sat in a home-office with an SPA921 behind NAT, and
> most probably a firewall.  I've got a STUN-server running, and calling
> in from the SPA921 to our Asterisk box works fine - though I had to
> open the firewall for UDP traffic on port 10000-20000.
>
> Calling from our Asterisk to the SPA921 doesn't work.  I'm guessing this
> is due to the NAT/firewall on the other side, coz' how would it know
> that UDP-traffic to <SPA publicIP>:5060 needs to be delivered to
> <192.168.x.x:5060> ?
>
>
>
> /Per Jessen, Zürich
>
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