This is my personal blog. The views expressed on these pages are mine alone and not those of my employer. This is not AI. All hallucinations are my own human ones.

Posts

2025-11-11
Why is SCHED_IDLE broken?
2025-10-26
The strange webserver hot potato — sending file descriptors
2025-09-07
Ideal programming language
2025-07-12
Go is still not good
2025-06-22
Setting clock source with GNU Radio
2025-06-21
Software defined KISS modem
2025-06-15
QO100 early success
2025-04-06
io_uring, kTLS and Rust for zero syscall HTTPS server
2025-03-24
Exploring RISC-V vector instructions
2025-02-27
Rebuilding FRR with pim6d
2025-02-14
Pike is wrong on bloat
2024-10-01
Connection coalescing breaks the Internet
2024-09-01
An AX.25 implementation in Rust
2024-06-23
Is your TLS resuming?
2024-04-27
Rust is faster than C, even before I added SIMD
2024-04-19
Cross compiling Rust -- Fixed
2024-04-18
Cross compiling Rust to Ubiquiti access point
2024-03-29
Use AGW for packet radio applications
2024-01-04
Meshtastic quick setup
2024-01-01
Apollo 11 notes
2023-11-24
RustRadio improved API 0.4
2023-11-19
SDR transmit and clean signals
2023-11-19
AX.25 and 9600bps G3RUH decoding
2023-10-24
Setting up secure wifi
2023-10-15
RustRadio, and Roast My Rust
2023-10-13
Downloading web resources
2023-07-23
The unreasonable effectiveness of radio
2023-07-05
Multichannel fast file transfers over AX.25
2023-05-13
ZModem over amateur radio
2023-04-23
Linking statically, and glibc breaking userspace for fun
2023-04-23
Counting current live readers
2023-04-18
Tracing function calls
2023-04-17
RISC-V optimization and -mtune
2023-01-25
VisionFive 2 quickstart
2022-12-28
Learning Rust, assisted by ChatGPT
2022-12-27
Better pipes
2022-12-17
Can ChatGPT debug my code? Can it write better code?
2022-11-15
Terminator 1 is the best Terminator movie
2022-11-12
Fast zero copy static web server with KTLS
2022-11-06
Integer handling is broken
2022-10-27
No way to parse integers in C
2022-08-30
Java — A fractal of bad experiments
2022-05-25
Another way MPLS breaks traceroute
2022-03-15
Dropping privileges
2022-03-11
seccomp — Unsafe at any speed
2022-02-22
AX.25 over D-Star
2022-02-21
Localisation isn't translation
2022-02-21
Go programs are not portable
2022-02-01
SSH over bluetooth - cleanly
2022-01-28
SSH over bluetooth
2022-01-27
Raspberry Pi bluetooth console
2021-12-25
Virtual audio cables
2021-12-19
Linux sound devices are a mess
2021-12-14
Unifi docker upgrade
2021-11-16
AX.25 in user space
2021-06-15
The uselessness of bash
2021-04-21
More FT8 propagation
2021-03-22
Measuring propagation using FT8
2021-03-18
Unifi controller with a real cert
2021-03-09
Tiling window manager
2020-12-03
Bypassing safety check for an obviously safe change
2020-11-25
BPF: The future of configs
2020-09-10
A smarter emacs
2020-08-03
Measuring USB with bpftrace
2020-08-02
Transferring pictures with DStar
2020-06-26
Troubleshooting KISS with bpftrace
2020-06-25
Amateur packet radio walkthrough
2020-06-19
FT8 and IC9700
2020-04-11
APRS
2020-04-05
Amateur radio digital voice
2020-04-03
Yaesu FT3D vs Kenwood D74
2020-02-24
20 years of maintaining an open source program
2019-12-28
Travelling amateur
2019-12-26
Broadband RF scanner
2019-11-23
TCP MD5
2019-11-15
Librem13v2 TPM upgrade
2019-11-10
CVE 2019-14866: GNU cpio
2019-10-28
OpenBSD in 2019
2019-05-07
D-Star is a closed system
2018-11-18
JT65 with SDR
2018-09-15
Base Go packages
2018-05-07
Amateur Radio and FT8
2018-03-14
Yubikey for SSH on Windows
2017-12-27
Microsoft: ReFS is ridiculous
2017-11-12
Why bitcoin is terrible
2017-10-27
WPA2 and Infineon
2017-10-26
Internet in China
2017-10-24
Is my TPM affected by the Infineon disaster?
2017-10-22
Yubikey for SSH after the Infineon disaster
2017-08-30
ReFS integrity is not on by default
2017-06-07
Microwave
2017-04-06
Decoding FSK
2017-03-15
Killing idle TCP connections
2016-10-17
Windows SSH client with TPM
2016-04-07
HSBC is not a real bank
2016-03-16
Ubiquity gear replacing BT HomeHub router
2016-01-28
Yubikey 4 for SSH with physical presence proof
2015-11-29
How I made my custom keyboard layout on Linux and Windows
2015-11-28
Building pov-ray on raspberry pi
2015-03-28
Scraping data from a BT home hub 5
2015-03-27
How to boot an encrypted system safely
2015-03-22
Raytracing Quake demos
2015-03-21
My mechanical keyboard
2014-09-20
Secure browser-to-proxy communication - again
2014-09-18
Colour calibration in Linux
2014-06-17
Another way to protect your SSH keys
2014-04-20
Don't forget to restart all your OpenSSL binaries
2013-11-30
How TPM-protected SSH keys work
2013-11-26
TPM chip protecting SSH keys - properly
2013-11-25
Should I generate my keys in software or hardware?
2013-11-12
TPM chip protecting SSH keys
2013-10-26
Fixing high CPU use on Cisco 7600/6500
2013-10-25
Next-hop resolution and point-to-point
2013-10-24
Why Go is not my favourite language
2013-02-27
GPG and SSH with Yubikey NEO
2013-02-08
Plug computer for always-on VPN
2013-01-13
Compiling C++ statically
2012-10-04
Interesting Arping bug report
2012-05-19
Shared libraries diamond problem
2012-02-07
Be careful with hashmaps
2012-02-04
Benchmarking TPM-backed SSL
2012-02-03
TPM-backed SSL
2011-12-27
Secure browser-to-proxy communication
2011-10-15
Optimizing TCP slow start
2011-07-16
Yubico is awesome
2011-07-05
OpenSSH certificates
2010-09-05
gettimeofday() should never be used to measure time
2010-08-05
tlssh - a replacement for SSH
2010-06-11
The rules of multicast
2010-06-08
It's duplex mismatch
2010-05-13
Redirecting to the closest site using Javascript
2010-04-10
10 years of maintaining an open source program
2010-01-26
Clipboard sniffer
2010-01-09
Shaping and policing on Cisco
2009-10-29
Lightwave. Like Google Wave only much less
2009-10-17
Holy ip packet Batman!
2009-10-01
Autotools is nice
2009-06-28
Spanning tree limits
2009-04-10
What should have been default on Cisco devices
2009-03-21
Moving a process to another terminal
2008-07-27
Erlang BGP daemon
2008-06-28
Buffering in pipes
2007-12-22
Solaris installation