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Linux Native Stack

The linux native stack is highly configurable and can be easily installed on all Debian distros.

Install

To get a basic node setup, the minimum viable software is:

apt install libax25 ax25-tools ax25-apps uronode

BBS

To set up a BBS install fbb

apt install fbb

Basic Config

We shall set up a single AX.25 port to receive calls and display Uronode to calling stations.

ax25 ports

Set up your ax25 ports in /etc/ax25/axports

The following example is for a NinoTNC:

# /etc/ax25/axports
#
# The format of this file is:
#
# name callsign speed paclen window description
#
uhf	UR0CAL-10	57600	255	2	UHF 9600bd

Modify the callsign to your own or your station's call.

This has to be attached as to the modem, in effect telling the computer to listen to the modem's output. Run the below as root:

kissattach /dev/ttyACM0 uhf

ax25d

ax25d (ax25 daemon) listens to incoming data and directs calling stations to the application you want them to use. It can present different applications based on any combination of the callsign calling you, the callsign and SSID the calling station is calling and the port they are calling to.

ax25d is controlled by /etc/ax25/ax25d.conf

# /etc/ax25/ax25d.conf
#
# ax25d Configuration File.
#
# AX.25 Ports begin with a '['.
#
[UR0CAL-10 via uhf]
NOCALL   * * * * * *  L
default  * * * * * *  - root  /usr/sbin/uronode uronode

Note the callsign, SSID and port are aligned with the axport in this example. Similar to axports, modify UR0CAL to our own callsign or your station's callsign.

ax25d is started by running the below as root:

ax25d

Stations should be able to call uronode on your system using AX.25.

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