This is my personal blog. The views expressed on these pages are mine alone and not those of my employer.

Posts

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