On Tue, Mar 24, 2009 at 6:04 PM, Martin Rogers <fromastlinux-us...@mhr.me.uk> wrote: > > > Kristian Kielhofner wrote: >> On Tue, Mar 24, 2009 at 7:37 PM, Martin Rogers >> <fromastlinux-us...@mhr.me.uk> wrote: >>> Hi >>> >>> To simplify access when traveling I have started to use IAX and Zoiper >>> from a Windows laptop, connecting back to one of my Asterisk boxes over >>> the internet. When this works - it works fine. However some hotels I >>> stay at seem to lock their firewalls down meaning that even IAX could >>> not be used. >>> >>> I guess there are two options. One is to try and IPSec under the >>> firewall, another is to use a commonly open UDP port. Does anyone know >>> of a UDP port which is likely to be open - I can't think of one. >>> >>> Can anyone provide a guide to configure IPSec on Astlinux and on a >>> Windows machine. This does not look like a quick job. >>> >>> Is there another way of achieving connectivity back to an Asterisk box - >>> presumably someone else has hit this? I note that Skype is good at >>> burrowing its way out through the firewall, invariably I end up using >>> Skype instead of Asterisk because of this. >>> >>> Any ideas ? >>> Mart >>> >> >> Try OpenVPN or straight IAX2 on port 53 (usually used for DNS). I >> find it is often left open. >> > Thanks for the hint. > > I have moved IAX2 over to port 53. The obvious bits were setting > bindport=53 in iax.conf, changing the Astlinux firewall to allow UDP 53, > and changing my router to forward UDP 53. > > However Zoiper was a bit of a fiddle. Changing the IAX port to 53 in the > Zoiper configuration did not work - the registration failed. A > Wireshark trace revealed that this configuration field only affected the > source port, the destination port was still using 4569. Adding a ":53" > to the "Server Hostname IP" configuration field as well, convinced it to > use 53 as the destination port. > > It now works OK on a local network, now to try it out on the road. > > Mart > > > >> > > ------------------------------------------------------------------------------ > Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are > powering Web 2.0 with engaging, cross-platform capabilities. Quickly and > easily build your RIAs with Flex Builder, the Eclipse(TM)based development > software that enables intelligent coding and step-through debugging. > Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com > _______________________________________________ > Astlinux-users mailing list > Astlinux-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/astlinux-users > > Donations to support AstLinux are graciously accepted via PayPal to > pay...@krisk.org. >
This is a really good tip. I'd be curious about your mileage on this one. Thus far I've had only one instance of IAX not working across a firewall. Well, now I know what to do! cheers, Sameer -- Dr. Sameer Verma, Ph.D. Associate Professor of Information Systems San Francisco State University San Francisco CA 94132 USA http://verma.sfsu.edu/ http://opensource.sfsu.edu/ ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org.
