I was looking for VMware ESXi Datastore Naming Rules, and this was the only really relevant post I could find:
[Wayback/Archive] Datastore Naming Rules – VMware Technology Network VMTN
Archive for December, 2023
Datastore Naming Rules – VMware Technology Network VMTN
Posted by jpluimers on 2023/12/29
Posted in ESXi6, ESXi6.5, ESXi6.7, Power User, Virtualization, VMware, VMware ESXi | Leave a Comment »
VMware ESXi: shell script to get uuid.bios and all Ethernet generatedAddress MAC address values for all VMs
Posted by jpluimers on 2023/12/28
This is a sort of follow-up on ESXi: listing virtual machines with their IP addresses where we ended with this:
I modified the above script to become this:
#!/bin/sh vmids=`vim-cmd vmsvc/getallvms | sed -n -E -e "s/^([[:digit:]]+)s+((S.+S)?)s+([S+])s+(.+.vmx)s+(S+)s+(vmx-[[:digit:]]+)s*?((S.+)?)$/1/p"` for vmid in ${vmids} ; do # powerState values: # Powered off # Powered on # Suspended powerState=`vim-cmd vmsvc/power.getstate ${vmid} | sed '1d'` name=`vim-cmd vmsvc/get.config ${vmid} | sed -n -E -e '/(vim.vm.ConfigInfo) {/,/files = (vim.vm.FileInfo) {/ s/^ +name = "(.*)",.*?/1/p'` vmPathName=`vim-cmd vmsvc/get.config ${vmid} | sed -n -E -e '/files = (vim.vm.FileInfo) {/,/tools = (vim.vm.ToolsConfigInfo) {/ s/^ +vmPathName = "(.*)",.*?/1/p'` # For now, I choose to use only the IPv4 main address from ipAddress, which is in between (vim.vm.GuestInfo) { and net = (vim.vm.GuestInfo.NicInfo) [. ipAddress=`vim-cmd vmsvc/get.guest ${vmid} | sed -n -E -e '/(vim.vm.GuestInfo) {/,/net = (vim.vm.GuestInfo.NicInfo) [/ s/^ +ipAddress = "(.*)",.*?/1/p'` printf "VM with id %3s has power state %-11s and IPv4=%-15s (name = ${name}; vmPathName = ${vmPathName}).n" "${vmid}" "${powerState}" "${ipAddress}" done
Now the script grew even larger in to vim-cmd-list-all-VMs-with-IPv4-MAC-uuid.sh:
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Posted in *nix, *nix-tools, ash/dash, ash/dash development, Development, ESXi6, ESXi6.5, ESXi6.7, Power User, Scripting, Software Development, Virtualization, VMware, VMware ESXi | Leave a Comment »
css color names – Google Search
Posted by jpluimers on 2023/12/27
I like the featured snipped [WayBack] css color names – Google Search
It points to [WayBack] Quackit: CSS Color Codes which has the below nice table (a few duplicates could be stripped, but the ordering and layout is great!)
Since then, I also found these very interesting pages on web colors that are also useful in any software development environment:
- Source: Web colors – Wikipedia which has sections for HTML color names, Basic colors, Extended colors, Web-safe colors, Safest web colors, Color selection, Color contrast (including many colorful tables similar to the table below)
- CIE L*a*b color space: CIELAB color space – Wikipedia
- List of color palettes – Wikipedia
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Posted in Color (software development), CSS, Development, HTML, Software Development, Web Development | Leave a Comment »
Guess the maximum DNS Response Size… (by Jan Schaumann)
Posted by jpluimers on 2023/12/26
Every once in a while Jan Schaumann writes a long Twitter thread and saves it in a blog post. Always good ways to learn. This time it was no different: [Wayback/Archive] DNS Response Size started with
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Posted in Communications Development, Development, DNS, Internet, Internet protocol suite, IPv4, IPv6, Power User, TCP, tcpdump, UDP, Wireshark | Leave a Comment »
Hello “SMTP Smuggling” information released days before the Holiday season to open source SMTP server teams
Posted by jpluimers on 2023/12/24
Jan Wildeboer was mad for good reasons, though the open source projects didn’t yet seem to publicly have show their real madness, just bits like [Wayback/Archive] oss-security – Re: Re: New SMTP smuggling attack:
I'm a little confused by sec-consult's process here. They identify a problem affecting various pieces of software including some very widely deployed open source software, go to the trouble of doing a coordinated disclosure, but only do that with...looking at their timeline... gmx, microsoft and cisco?
“SMTP Smuggling” is bad, and big open source SMTP server projects like exim, postfix and sendmail needed to assess and fix/prevent the issue on very short notice: effectively confronting them with a zero-day less than a week between the information got released and the Holiday season.
That gives “deploy on Fridays” a totally different dimension.
How bad? Well, it already managed to reach this Newline – Wikipedia entry:
The standard Internet Message Format[26] for email states: “CR and LF MUST only occur together as CRLF; they MUST NOT appear independently in the body”. Differences between SMTP implementations in how they treat bare LF and/or bare CF characters have led to so-called SMTP smuggling attacks[27].
The crux of the problem is very well described by the “Postfix: SMTP Smuggling” link below: recommended reading, and the middle of [Wayback/Archive] SMTP Smuggling – Spoofing Emails Worldwide | Hacker News
…
TLDR: In the SMTP protocol, the end of the payload (email message) is indicated by a line consisting of a single dot. The line endings normally have to be CRLF, but some MTAs also accept just LF before and/or after the dot. This allows SMTP commands that follow an LF-delimited dot line to be “tunneled” through a first MTA (which requires CRLF and thus considers the commands to be part of the email message) to a second MTA (which accepts LF and thus processes the commands as real commands). For the second MTA, the commands appear to come from the first MTA, hence this allows sending any email that the first MTA is authorized to send. That is, emails from arbitrary senders under the domains associated with the first MTA can be spoofed.
…
Here are some links to keep you busy the next hours/days/weeks:
- [Wayback/Archive] CVE-2023-51764 postfix
- [Wayback/Archive] CVE-2023-51765 sendmail
- [Wayback/Archive] CVE-2023-51766 exim
- [Wayback/Archive] hannob/smtpsmug
Script to help analyze mail servers for SMTP Smuggling vulnerabilities.
And the toots linking to background information:
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Posted in *nix, *nix-tools, Communications Development, Development, exim mail, Internet protocol suite, postfix, Power User, Python, Scripting, sendmail, SMTP, Software Development | Leave a Comment »
Hermannus Stegeman: “Die jeugd van tegenwoordig? Die is hard aan het werk.…” – Stegodon-mastodon
Posted by jpluimers on 2023/12/24
[Wayback/Archive] Hermannus Stegeman: “Die jeugd van tegenwoordig? Die is hard aan het werk.…” – Stegodon-mastodon
“Die jeugd van tegenwoordig? Die is hard aan het werk. Met een studie én vaak een flinke bijbaan. Je zou het weleens vergeten, met al die klachten over de werkschuwe ‘generatie Z’ die de dag lethargisch doorbrengt met het kijken naar TikTok-filmpjes, die bij het sollicitatiegesprek al begint over een sabbatical en die ontslag neemt bij de eerste tegenslag. ”
Lees het volledige artikel:
Wie onze jongeren lui noemt, kent de cijfers niet
https://fd.nl/opinie/1501308/wie-onze-
[Wayback/Archive] Wie onze jongeren lui noemt, kent de cijfers niet
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Posted in Awareness | Leave a Comment »
Print large PDF in Preview over several pages… – Apple Community
Posted by jpluimers on 2023/12/22
Summary of [Wayback/Archive] Print large PDF in Preview over several pages… – Apple Community:
- Preview cannot
- Acrobat Reader (formerly Adobe Reader) can; it is called “Poster” (also on Windows)
Via [Wayback/Archive] macos print pdf scaled over two pages – Google Search.
–jeroen
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Posted in Adobe, Adobe Acrobat, Apple, Mac OS X / OS X / MacOS, PDF, Power User, Windows | Leave a Comment »
b0rk does fun things with DNS: CNAME records at the root of the domain; technically not allowed, definitely not recommended, but somehow work for web browsing
Posted by jpluimers on 2023/12/21
[Wayback/Archive] 🔎Julia Evans🔍 on Twitter: “I’ve always heard that you can’t create CNAME records at the root of the domain. But apparently you can? It seems to work fine as far as I can tell but I’m curious about the possible consequences. (yes, I registered cnameroot.com just to make this tweet) “
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Posted in Cloud, Cloudflare, DNS, Infrastructure, Internet, Power User | Leave a Comment »
Kortepodcast.nl: Onderdeel van De Staat van Stasse en Audiocollectief Stereotiek
Posted by jpluimers on 2023/12/20
Ik ga Stefan Stasse en Tim Daemen missen op NPO Radio 2.
Hier voor mijn linkarchief een site met herineringen: [Wayback/Archive] Kortepodcast.nl: Onderdeel van De Staat van Stasse en Audiocollectief Stereotiek
En natuurlijk de pagina De Staat van Stasse – Wikipedia
Ook om niet te vergeten: de all-time-classic [Wayback/Archive] Enjoy and Fuck The System Ringtone [Wayback] https://kortepodcast.nl/wp-content/uploads/2022/05/enjoy-and-fuck-the-system-harder.mp3
--jeroen
Posted in Audio, Media, Power User | Comments Off on Kortepodcast.nl: Onderdeel van De Staat van Stasse en Audiocollectief Stereotiek
When sending out IDs or credentials per snail mail, please use a font that distinguishes zeroes from ohs
Posted by jpluimers on 2023/12/20
Paper mail is about user experience too, not just ads, but letters too, especially the ones sending out IDs or credentials.
There were three characters that could either be an oh or a zero, so it took me half the permutations to get it right.
A font like Consolas is fine for that (and ships with Windows). Even better: use OCR A.
Based on [Wayback/Archive] Jeroen Wiert Pluimers on Twitter: “Tip voor @xs4all: In de rest van de xs4all->KPN migratie, stuur “Onderwerp Uw wachtwoord voor Telefonie” brieven gaarne in een lettertype waar de 000 en OOO heel duidelijk van elkaar kunnen worden onderscheiden. Hier 4 pogingen (de helft van de permutaties) nodig gehad. “
–jeroen
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Posted in Development, Software Development, User Experience (ux) | Leave a Comment »
The Wiert Corner - irregular stream of stuff 