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isithran
isithran

isithran

isithran@social.lkw.tf

isithran

isithran@social.lkw.tf

HamRadio operator (mainly packet data, microwave links, hamnet), λ<6m. High energy physics, timekeeping and unrelated stuff.

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-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwGFHdd18KNu80CvwJ0Ih T0xac5Tj3f4t3mSXEWcYxQfm+j2Eja3ZFirwSg59LMDsGtmI/pWm9BOlAI7pIhbq 01bQYBbjgUv0jQDLmyaCTscG4D6aM7tPzxyzsNmFLtYXMzaKUuntQDpTiQ1tcHF3 0kaC/NQWuOB2BRs0mEiwcDKsBFH1WouB51hcbwMjKxYhAmeGQSLYWxoHy1g1UwMY Gv8qrC6uZOCQ/Pdr81EEg7UV9Kcdr2CJAqXCqvo14KqbpL68oUQUVhK7nR4YROTg efBVAxgleBEMLZtyD1uESJ9wFD4vub2k69pxvvQNVMirNoIfpdH0zvny6+L/jLaU K4Djj/Qqq+s/3v/DamrCTdOK56aev9NO9DvHH/8VvovK0S6Ovw2NslrfW77VGILS h2yCY9toJnYsTrdlg95wzOgicSAvaXeRdr4y13rysZKcz58KINjHjVvksfVQgUMJ 37E6V8cp4NsvShXyPY3c15ACuKU6Hq/EiYTRV4gL90NK++MN3k0cYxVJYZZFOFAg hSKW/ks8TUyoOfTti4ZxqjIWLDGL3RzmnjUsPAAKPwUYl1iYCuXIoIOo+2asI9Q+ 2wR47j6luRqCoM85Th3g3BC7WEEXXsWFs1u1FkRKvFs2NLbYK9JnTT9t+SYazgiy pPIAnijsIE91gtgviRkaziECAwEAAQ== -----END PUBLIC KEY-----
2026-04-08T17:24:42+00:00
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HamRadio operator (mainly packet data, microwave links, hamnet), λ<6m. High energy physics, timekeeping and unrelated stuff.

She/Her 🏳️‍⚧️

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2026-01-30 23:22:03 2026-01-30 22:15:59 2026-01-30 22:15:59 3830180

isithran
isithran
friendica (DFRN) - Link to source

isithran

2 months ago from Tusky •

isithran

2 months ago from Tusky •


Having a dissector for a protocol which spec is not yet completed, nor public: check.
AX.25 Authentication Header

## Status of this Memo
This document specifies an Amateur Radio protocol, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited.

## Copyright Notice

Copyright (C) 2026 Célestine Gramaize F4HOF

## Introduction

The AX.25 Authentication Header (AX.AH) is used to provide connectionless integrity and data origin authentication for AX.25 datagram (hereafter referred to as just "authentication"), and to provide protection the default calls for the sender to increment the Sequence Number against replays. AX.AH provides authentication for as much of the AX.25 header as possible, as well as for upper level protocol data. However, some AX.25 header fields may change in transit and the value of these fields, when the packet arrives at the receiver, may not be predictable by the sender. The values of such fields cannot be protected by AX.AH.

The keywords MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD, SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL, when they appear in this document, are to be interpreted as described in [RFC 2119}(https://datatracker.ietf.org/doc/html/rfc2119).

Security services can be provided between a pair of communicating hosts, between a pair of communicating security gateways, or between a security gateway and a host.
A Wireshark screenshot depicting an AX.25 capture in which an AXSec packet is selected.
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