[Xastir] ax.25

[Chris]

If you use linux, disable avahid when you bring up your packet
interface if it's not a dedicated box.

On Wed, Jul 21, 2010 at 4:46 PM, Curt, WE7U <curt.we7u at gmail.com> wrote:
> On Wed, 21 Jul 2010, Jason KG4WSV wrote:
>
>> If it's in a linux/xastir context, this frequently refers to the ax.25
>> kernel support available in linux.  Since the ax.25 protocol _is_
>> networking, some linux hams hacked out a network interface driver and
>> added it to the kernel, where all network interfaces belong.  The
>> result is that you can hit the network stack on a single interface
>> (i.e. radio/TNC) from multiple applications and the kernel will handle
>> things so that the applications don't step on each other.
>
> Roger.  You also have to watch out for applications that send out
> broadcasts or queries to ALL network interfaces, because as soon as
> you implement an AX.25 kernel networking interface they'll start
> talking out that interface too.  Samba will do this, but there are
> others.  You can fix this with firewall settings or usually within
> the individual app's configs.
>
>
>> The other way to interface is the same way windows and macs do - the
>> kernel provides a serial interface (RS232) to the TNC, and the
>> application implements the entire ax.25 stack.  This makes it
>> difficult to impossible to share a TNC among multiple applications.
>
> We have a Soundcard HOWTO and an AX.25 HOWTO on the Xastir Wiki
> pages, in case you decide to try one of those.
>
> It is nice to be able to share a frequency among several apps.  I'm
> running a TNC-X (KISS-only TNC) with AX.25 kernel networking at home
> for Xastir and igating.  I could throw Digi_NED on there too if I
> wanted full-fledged digipeating.  At the same time I could do a
> telnet, ftp, or ssh session to others on RF.
>
> --
> Curt, WE7U.                         <http://www.eskimo.com/~archer>
>   APRS:  Where it's at!                    <http://www.xastir.org>
>  Lotto:  A tax on people who are bad at math. - unknown
> Windows:  Microsoft's tax on computer illiterates. - WE7U.
> The world DOES revolve around me:  I picked the coordinate system!"
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-- 
73      de     Chris       KC2RGW
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