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choomba
@choomba@social.tchncs.de
Good night, Valerie.
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Joined March 02, 2026
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Replying to
@kuketzblog@social.tchncs.de
@kuketzblog@social.tchncs.de Ich nutze Passkeys im eigenen Passwortmanager über mehrere Geräte hinweg. Das funktioniert super. Konnte mit Passkeys auch schon Authentifizierungsprobleme mit dem normalen Login umgehen, d.h. sie sind in meiner Erfahrung zuverlässiger.
Today I learned that there are no moles in Ireland: http://news.bbc.co.uk/1/hi/northern_ireland/7335006.stm
Coincidentally my new life goal is to introduce moles into Ireland.
Replying to
@ori@hj.9fs.net
@ori @b0rk@social.jvns.ca Small correction. The last one is the size of the TCP header, encoded in the high nibble of byte 12. I dove into this last night and finally understood it. It takes the full length of the IP packet (which wraps the TCP packet) and subtracts the IP and TCP header lengths. If the result is zero, we have a packet without data.
Replying to
@b0rk@social.jvns.ca
@b0rk@social.jvns.ca Ah, that's something new, thanks! It does start to make sense. We get the total length of the IP packet, subtract the IP header length and then the TCP header length. Really clever. I haven't looked this deep into protocols since uni!
Replying to
@b0rk@social.jvns.ca
@b0rk@social.jvns.ca or others, is there a page that explains a filter like this: tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)
I have no idea what is going on here. This is from the pcap filter man page. Why the masking and shifting and what is up with ip[2:2]? This part of tcpdump has remained a mystery to me for decades.
Replying to
@TheBreadmonkey@beige.party
@TheBreadmonkey@beige.party My understanding of quantum mechanics collapses when being observed. I sometimes feel like I made sense of it, but it falls apart when I try to think of a way to explain it to others.
Replying to
@taschenorakel@mastodon.green
@taschenorakel @NetscapeNavigator As awesome as that would be, the LTS support for Windows 11 will run at least until 2034. I don't see many companies switching before that date. Especially not to an entirely new tech stack. Sad, but unfortunately the reality. But we can remain hopeful that this latest desperate push alienates even more people and makes them switch.