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#SysAdmin

102 posts91 participants2 posts today

🚀 ¿Te apasiona el software libre, Linux y toda la actualidad tecnológica?
Entonces tienes que darte una vuelta por nuestra comunidad en Reddit:
👉 r/Kernelcast

En r/Kernelcast hablamos de distros, analizamos lanzamientos, compartimos manuales y debatimos las últimas novedades del mundo tech.
💻🧠 Desde Fedora hasta Arch, pasando por GNOME, KDE, PipeWire y más.

Únete, comparte lo que sabes, aprende algo nuevo y forma parte de una comunidad donde la tecnología se vive con pasión.
¡Te esperamos! 🔧🐧

At EuroBSDCon 2025 in Zagreb: "Network Management with the OpenBSD Packet Filter Toolset" by Peter N. M. Hansteen, Tom Smyth, Max Stucchi, see events.eurobsdcon.org/2025/tal

Schedule at events.eurobsdcon.org/2025/sch

To register 2025.eurobsdcon.org/registrati

events.eurobsdcon.orgNetwork Management with the OpenBSD Packet Filter Toolset EuroBSDCon 2025The OpenBSD Packet Filter (PF) is at the core of the network management toolset available to professionals working with the OpenBSD and FreeBSD operating systems. Understanding the PF subsystem and the set of networking tools that interact with it is essential to building and maintaining a functional environment. The present session will both teach networking and security principles and provide opportunity for hands-on operation of the extensive network tools available on OpenBSD and FreeBSD in a lab environment. Basic to intermediate understanding of TCP/IP networking is expected and required for this session. Topics covered include The basics of and network design and taking it a bit further Building rulesets Keeping your configurations readable and maintainable Seeing what your traffic is really about with your friend tcpdump(8) Filtering, diversion, redirection, Network Address Translation Handling services that require proxying (ftp-proxy and others) Address tables and daemons that interact with your setup through them The whys and hows of network segmentation, DMZs and other separation techniques Tackling noisy attacks and other pattern recognition and learning tricks Annoying spammers with spamd Basics of and not-so basic traffic shaping Monitoring your traffic Resilience, High Availability with CARP and pfsync Troubleshooting: Discovering and correcting errors and faults (tcpdump is your friend) Your network and its interactions with the Internet at large Common mistakes in internetworking and peering Keeping the old IPv4 world in touch with the new of IPv6 The tutorial is lab centered and fast paced. Time allowing and to the extent necessary, we will cover recent developments in the networking tools and variations between the implementations in the OpenBSD and FreeBSD operating systems. Participants should bring a laptop for the hands on labs part and for note taking. The format of the session will be compact lectures interspersed with hands-on lab excercises based directly on the theory covered in the lecture parts. This session is an evolutionary successor to previous sessions. Slides for the most recent version of the PF tutorial session are up at https://nxdomain.no/~peter/pf_fullday.pdf, to be updated with the present version when the session opens.

Los comandos olvidados de GNU/Linux que deberías volver a usar (o descubrir por primera vez)

Una lista con comandos que no son tan mainstream como ls o top, pero que son auténticas joyas.

Aprenderlos es como desbloquear superpoderes del sistema. ¡Vamos! ⚡ :tux: :gnu:

Dentro hilo! 🧵

#Linux#GNU#SysAdmin
Replied in thread

Hey les #SysAdmin fans de #vélo, de #trail et de #randonnee, qui se lance dans l’ouverture et la maintenance d’un serveur francophone wanderer ?

> wanderer is a decentralized, self-hosted trail database. You can upload your recorded GPS tracks or create new ones and add various metadata to build an easily searchable catalogue.

wanderer.to

wanderer DocumentationWelcome to wandererThe self-hosted trail database

🚀 Entdecke die Welt der Systemadministration mit einfachen Tipps für Linux-Einsteiger! 🐧 Egal ob Anfänger oder Erfahrene, dieser Artikel bietet wertvolle Einblicke. Ein Reblog von @dasnetzundich. Lies mehr und starte dein Linux-Abenteuer hier: https://dasnetzundich.de/systemadministration-leicht-gemacht-einfache-tipps-fuer-linux-einsteiger/ #Linux #SysAdmin #Anfängerfreundlich

Das Netz und ich · Systemadministration leicht gemacht – Einfache Tipps für Linux-Einsteiger
More from lars

Ontem foi dia Mundial de Apreciação dos Administradores de Sistemas, um dia celebrado na última 6ª de julho e que a nível global calha ao sábado 🤷.
Este dia é como o Natal, é quando queremos, e principalmente quando o #sysadmin nos salva o traseiro de fazermos burrada no PC, na impressora ou de tirar o cabo de rede do escritório por engano; bloqueia IAs usurpadoras de contas e Metas anti-privacidade aqui na amada chafarica social, corrige erros do sistema e... 1/2
#sysadminday #sysadminday2025

Spent nearly 3 hours chatting with @s3phy trying to understand the distinctions between various types of IPv6 addresses.
Networks are confusing as heck :blobsweats:

Thanks to their patient proofreading I was also able to make this suggestion to clarify the UI in #GNOME Settings' "Network" info dialog (in gnome-control-center): gitlab.gnome.org/GNOME/gnome-c

I'm hoping such labels can be added to make it a little bit clearer for users like me.

GitLabNetwork: Network profile UI papercuts (#3052) · Issues · GNOME / Settings · GitLab Environment: GNOME Settings: 46.1 Operating System: Fedora 40

Yesterday was #Sysadmin Appreciation Day, and you can exploit time zones!

Tilted Windmill Press is offering 10% off all titles with coupon code YIKES. Buy print, get the ebook free. Excludes already-discounted bundles.

Valid until it's the 27th in Detroit, because time zones are a pain. Five more hours!

tiltedwindmillpress.com

(I'm reposting this intermittently, sorry.)

Tilted Windmill PressTilted Windmill PressBecause Amazon will waste your money on executive salaries, and the author will use it to spoil his pets.