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#sysadmin

44 posts41 participants1 post today

Firewalls function at various layers of the OSI model. Basic stateless firewalls work at layers 3 and 4, filtering traffic by IP address and port. In contrast, application-layer firewalls operate at layer 7, analyzing the actual content of the traffic to make filtering decisions

Here is an overview of firewalls across OSI layers 😎👇 #infosec #sysadmin

Find high-res pdf books with all my #cybersecurity related infographics at study-notes.org

Hearing from more and more #sysadmin folks that the big mail providers are getting so bad that they're unwillingly reading #ryoms to set up their own mail systems.

Kind of a mixed blessing for me. What should I say? "I'm sorry you're going through this, but thanks for the money." "Told you so." "Welcome to suck less."

So I go with "good luck." Because none of us like this.

Is there a FreeBSD-equivalent to systemd drop-in replacements for services?

The only way I can see at the moment is just by backing up the original /etc/rc.d/service file and creating a new one to replace it.

#FreeBSD#BSD#FOSS

hier soir, j'ai tenté une restauration #PITR d'une base #postgresql...
ca n'a pas bien marché, elle se plaignait de ne pas avoir assez wal pour etre à la bonne date...
ce matin je me rends compte que la restauration dans le futur ne fonctionne pas encore, et je suis un peu déçu (de moi même principalement, mais aussi du voyage dans le temps postgresql).

on va dire que j'étais fatigué #sysadmin #SadSysadmin

After I started my first #IT job (and created my Digital Ocean VPS at that time) I decided to create kind of character card for myself, like in #RPG, for writing down my #sysadmin skill levels and progress. I did it in Postgres, probably because database container was one of first things I had on my VPS then.

I created slightly complex system of arbitrary skill and knowledge points, trying hard to not overestimate my skill levels. Like in standard games there are bigger gaps between higher levels and separate "overall sysadmin level" with own points, indirectly dependent on skills' levels' upgrades (and more directly on other kind of knowledge points). Many things are highly relative here as it is not possible to accurately describe own degree of knowledge in numbers. Also some kind of skills could have more "levels" (e.g. familiarity with more complex software learned gradually with time) than others. I have point scale for 10 levels now. And I am almost sure I wouldn't reach higher than 6-7 "overall sysadmin level" in my lifetime :blobcatsweat:

I didn't update it since October 2023. Today I log in and tried to clean that mess. I feel I should make short paper notes about my progress frequently, like I was doing in previous job. Updates would be easier...

#admin#geek#nerd

It's been a while since I've run VMs locally, what is the best option in 2025 for a Windows 10/11 PC?

Is VMware Player/Workstation even a viable option after the Broadcom acquisition and them selling off their EUC department to Omnissa?

does anyone know what this bot is for? is it something manually initiated or something completely automatic? note that i dont use #cloudflare in fact, my code has blocked these requests. therefore its a bit of role reversal if you think about it. >:)

but i am still curious about if its manual or not. because the page it linked to didn't say.