Citizen Lab is looking for Systems and Security Administrator

The System and Security Administrator will manage and oversee the use of all information technology in The Citizen Lab; design UNIX and Linux network infrastructure; develop, maintain, and monitor network security policies; ensure all workstations and related components are kept operationally effective and secure; oversee administration and security of on-site and off-site servers, websites and web servers; provide training in computer security tools and practices to staff; and collaborate on IT purchases by providing recommendations, cost estimates and tracking expenses.

See full description and apply here: https://citizenlab.ca/2025/03/job-opportunity-systems-and-security-administrator/

@citizenlab
#citizenlab #job_offer #sysadmin #networkadministrator

TIL: an exhausted #cmos #battery can cause #Linux to behave strangely after a hard #shutdown (caused by a #UPS being incorrectly turned off) - it uses the BIOS time to check the filesystem block timestamps, and as it had gone back to 2012 the OS thinks the filesystem time is in the future! (At least the hard drive on this server isn't on the way out yet which is what I had feared, but this required an emergency visit to the office as it is the main #VOIP #PBX) #sysadmin

Losing the war for the free internet https://anarc.at/blog/2025-03-21-losing-war-internet #debian-planet #python-planet #hacking #network #neutrality #sysadmin #radio

Registration is open for #bsdcan, program published - see the blog post at https://blog.bsdcan.org/2025/03/18/bsdcan-2025-talks-tutorials-and-registration/ for details, or go to https://bsdcan.org (direct to registration link: https://indico.bsdcan.org/event/5/registrations/8/) #bsd #unix #openbsd #freebsd #netbsd #development #devops #sysadmin #freesoftware #libresoftware

Today, I am running IPv6 on my home network and I’m not having problems, just like every day for the past fifteen years. It’s not hard.

I think I may need to give this a go!

#SysAdmin #Linux #networking #3DPrinting #servers
https://3dp.chat/@cults3d/114167285505813852

We have a #DNS setup in our company with one hidden primary and one internal primary #dnsserver. These servers use external and internal views. I am just quoting our documentation here.
My question is, if our internal DNS server is not reachable for whatever reason, is there any downsides to use the hidden primary as a fallback? Or do we need to establish redundancy for DNS in some other form? #Linux #networking #SysAdmin

Kiroan itseäni kun harmaapartaisuuttani tein swap-osion yhteen koneeseen joskus vuosia sitten vaikka sitä ei nyt ihan välttämättä olisi tarvittu. Nyt tarvitsisin lisää tilaa root-osiolle ja pitäisi poistaa se swap. Eli käytännössä pitäisi bootata se kikkare jostain muualta että voin säätää osiot uudestaan. Voi kiesus nyt taas, ehkä otan vaan uuden koneen ja siirrän kaiken, lienee vähemmän vaivan tie.

I have a very strange issue with my VPS.

I am setting up wazuh for my personal use, and while the software seems to run just great, I'm unable to connect agents to it.

1. Wazuh does bind the ports (1514, 1515) properly. At least, netstat tells me to.
2. I can tcpdump on these ports, and see activity on 1515 (agent registration port).
3. The SYN packets never get a response from my VPS. It's like Wazuh is binding the ports, but isn't getting the packets or responding to them.

I'm completely out of ideas. The Wazuh community Discord has been unhelpful, so far.

I suspect ghosts.

Any help?

#wazuh #sysadmin #linux #selfhosted

#sysAdmin #Postfix
Ah, je viens d'avoir le "unexpected attribute smtputf8 from xxx socket (expecting: sendopts)" Voilà ce qui arrive quand on ne lit pas les release notes.
(Executive summary : redémarrez Postfix.)