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Peter N. M. HansteenNew sysctl(8) -f option supports reading entire settings file in one go <a href="https://www.undeadly.org/cgi?action=article;sid=20250408120131" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.undeadly.org/cgi?action=article;sid=20250408120131</a> <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#openbsd</a> <a href="https://mastodon.social/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> <a href="https://mastodon.social/tags/sysadmin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysadmin</a> <a href="https://mastodon.social/tags/devops" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#devops</a> <a href="https://mastodon.social/tags/development" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#development</a> <a href="https://mastodon.social/tags/security" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#security</a> <a href="https://mastodon.social/tags/freesoftware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#freesoftware</a> <a href="https://mastodon.social/tags/libresoftware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#libresoftware</a>

Axel ⌨🐧🐪🚴😷 | R.I.P Natenom<a href="https://chaos.social/tags/TIL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TIL</a>: <a href="https://chaos.social/tags/Firefox" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Firefox</a> on <a href="https://chaos.social/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Linux</a> works fine withuser.max_user_namespaces = 0as well as withuser.max_user_namespaces = 100but not withuser.max_user_namespaces = 1which seems to have been set by default on my <a href="https://chaos.social/tags/DebianUnstable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DebianUnstable</a> since last week or so.Also Firefox' error messages on the shell where I started it weren't really that helpful:Failed to launch tab subprocess @fork (Error:28): file ipc/[…] fork() failed: No space left on device: file ipc/[…]<a href="https://chaos.social/tags/UserNS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UserNS</a> <a href="https://chaos.social/tags/UserNamespace" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UserNamespace</a> <a href="https://chaos.social/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a>

Peter N. M. Hansteen-current now has more flexible performance policy <a href="https://www.undeadly.org/cgi?action=article;sid=20241129093132" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.undeadly.org/cgi?action=article;sid=20241129093132</a> <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#openbsd</a> <a href="https://mastodon.social/tags/perfpolicy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#perfpolicy</a> <a href="https://mastodon.social/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> <a href="https://mastodon.social/tags/performance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#performance</a>

Gea-Suan LinOpenBSD 提供了關閉 Nagle's algorithm 的 sysctl 選項看到「Demise of Nagle's algorithm (RFC 896 - Congestion Control) predicted via sysctl」這篇，OpenBSD 提供 sysctl 的選項直接關閉 Nagle's algorithm。The below cha<a href="https://blog.gslin.org/archives/2024/05/15/11803/openbsd-%e6%8f%90%e4%be%9b%e4%ba%86%e9%97%9c%e9%96%89-nagles-algorithm-%e7%9a%84-sysctl-%e9%81%b8%e9%a0%85/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://blog.gslin.org/archives/2024/05/15/11803/openbsd-%e6%8f%90%e4%be%9b%e4%ba%86%e9%97%9c%e9%96%89-nagles-algorithm-%e7%9a%84-sysctl-%e9%81%b8%e9%a0%85/</a><a href="https://abpe.org/tags/Computer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Computer</a> <a href="https://abpe.org/tags/Murmuring" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Murmuring</a> <a href="https://abpe.org/tags/Network" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Network</a> <a href="https://abpe.org/tags/OpenBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OpenBSD</a> <a href="https://abpe.org/tags/OS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OS</a> <a href="https://abpe.org/tags/Software" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Software</a> <a href="https://abpe.org/tags/algorithm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#algorithm</a> <a href="https://abpe.org/tags/delay" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#delay</a> <a href="https://abpe.org/tags/nagle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nagle</a> <a href="https://abpe.org/tags/network" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#network</a> <a href="https://abpe.org/tags/openbsd" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#openbsd</a> <a href="https://abpe.org/tags/performance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#performance</a> <a href="https://abpe.org/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> <a href="https://abpe.org/tags/tcp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tcp</a>

Peter N. M. HansteenDemise of Nagle's algorithm (RFC 896 - Congestion Control) predicted via sysctl <a href="https://www.undeadly.org/cgi?action=article;sid=20240514075024" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.undeadly.org/cgi?action=article;sid=20240514075024</a> <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#openbsd</a> <a href="https://mastodon.social/tags/networking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#networking</a> <a href="https://mastodon.social/tags/tcp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tcp</a> <a href="https://mastodon.social/tags/congestion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#congestion</a> <a href="https://mastodon.social/tags/nagle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nagle</a> <a href="https://mastodon.social/tags/nodelay" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nodelay</a> <a href="https://mastodon.social/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a>

0xThylacineIf you're trying to get FreeBSD to work on a headless setup, try this config. You need them all, else it will be painful.Pay particular attention to the variations in capitalisation, quotes - or (you guessed it) it will be painful.Example for 115kbaud serial console:/boot.config -S115200/boot/loader.conf comconsole_speed="115200"/etc/sysctl.conf options CONSPEED=115200<a href="https://infosec.exchange/tags/freebsd" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#freebsd</a> <a href="https://infosec.exchange/tags/headless" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#headless</a> <a href="https://infosec.exchange/tags/serial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#serial</a> <a href="https://infosec.exchange/tags/serialConsole" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#serialConsole</a> <a href="https://infosec.exchange/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> <a href="https://infosec.exchange/tags/loaderDotConf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#loaderDotConf</a> <a href="https://infosec.exchange/tags/bootDotConfig" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bootDotConfig</a>

Orhun Parmaksız 👾Today I learned how to fix "*neighbour table overflow*" error in the Linux kernel using sysctl! 🐧🚀 More info: <a href="https://imzye.com/Linux/linux-neighbour-table-overflow/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://imzye.com/Linux/linux-neighbour-table-overflow/</a>🦀 I used **systeroid** which is sysctl written in Rust: <a href="https://github.com/orhun/systeroid/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://github.com/orhun/systeroid/</a><a href="https://fosstodon.org/tags/linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#linux</a> <a href="https://fosstodon.org/tags/kernel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#kernel</a> <a href="https://fosstodon.org/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> <a href="https://fosstodon.org/tags/rustlang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rustlang</a> <a href="https://fosstodon.org/tags/tui" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tui</a> <a href="https://fosstodon.org/tags/commandline" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#commandline</a> <a href="https://fosstodon.org/tags/fix" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fix</a>

Thomas Strömberg 🚲🌳🛵<a href="https://triangletoot.party/tags/osquery" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#osquery</a> defense kit v1.6.0 just dropped with some new <a href="https://triangletoot.party/tags/blueteam" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#blueteam</a> queries: <a href="https://github.com/chainguard-dev/osquery-defense-kit" rel="nofollow noopener noreferrer" target="_blank">https://github.com/chainguard-dev/osquery-defense-kit</a>- unencrypted <a href="https://triangletoot.party/tags/GCP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GCP</a> service account keys - unexpected <a href="https://triangletoot.party/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> calls - unexpected <a href="https://triangletoot.party/tags/xattr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#xattr</a> calls - unexpected file made <a href="https://triangletoot.party/tags/executable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#executable</a> - unexpected Security.Framework programIf nothing else, I hope the queries are useful ideas for others! Have a great weekend. 🌴

Alfonso SicilianoCurrently <a href="https://bsd.network/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreeBSD</a> provides over 10000 parameters for sysctl. Would you like to read a series of blog posts, tutorials, guides and examples for handling the sysctl MIB?<a href="https://bsd.network/tags/Documentation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Documentation</a> <a href="https://bsd.network/tags/doc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#doc</a> <a href="https://bsd.network/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreeBSD</a> <a href="https://bsd.network/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> <a href="https://bsd.network/tags/ThePowerToServe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ThePowerToServe</a>

Alfonso SicilianoSome user required to use sysctlview in a dark-theme, this feature is available with the new 2.0.1 version<a href="https://bsd.network/tags/FreeBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FreeBSD</a> <a href="https://bsd.network/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a>

openSUSE Linux<a href="https://fosstodon.org/@opensuse" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@opensuse</a> <a href="https://fosstodon.org/tags/YaST" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#YaST</a> sprint brings better control of overridden <a href="https://fosstodon.org/tags/sysctl" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sysctl</a> configuration values & brings new features for zSeries mainframes like Secure Boot and I/O devices auto-configuration - <a href="https://lizards.opensuse.org/2020/03/06/yast-sprint-94/" rel="nofollow noopener noreferrer" target="_blank">https://lizards.opensuse.org/2020/03/06/yast-sprint-94/</a>

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