Windows Server 2025 Hit by Kerberos Auth & Network Glitches After Security Update Rollout
#Microsoft #WindowsServer #WindowsServer2025 #Kerberos #Authentication #CyberSecurity #SysAdmin #BigTech
#Kerberos
Common Tool Errors in Kerberos
Discusses frequent issues with Kerberos tools, including misconfigurations and troubleshooting methods for authentication failures.
@tncummings Oh boy, I fixed it. It kind of was #Linux' fault, but in a very different way than I thought.
It wasn't a reboot of the #Debian machine that broke the #kerberos #nfs client there ... it was a configuration change of my nfs server. For quite some time, I allowed *any* #security flavor there, to migrate clients to #krb5p. And although the Linux VM was configured for krb5p from the very beginning, turns out it malfunctions when not at least #krb5i is allowed as well, it seems to insist on using that for *some* request types (which is perfectly in line with my observation that only some request types keep giving errors all the time).
What the heck .... 🤯
Currently reinstalling my #Debian VM from scratch.
This got to a point where your typical #Linux system is really "on par" with #Windows. 😏
I operate a little "AD" domain at home with #samba and for homes and similar, #NFS shares with #kerberos, krb5p (or SMB for windows clients). Works like a charm, except this Debian VM had a sudden issue after some innocent reboot: Unprivileged domain users got NFS errors for CLOSE and WRITE requests (100% error rate), after some annoying timeout. No amount of reading logs, enabling verbose output, searching the web, could give ANY hint about what is wrong, and no configuration change I tried had any effect. I'm finally giving up. Reinstall it is.... 😡
From NTLM Relay to Kerberos Relay: Everything You Need to Know
Explores Kerberos relay attacks, detailing SPN-based ticket relaying, AP-REQ interception, and limitations compared to NTLM relay
https://decoder.cloud/2025/04/24/from-ntlm-relay-to-kerberos-relay-everything-you-need-to-know/
A nice post that provides an overview about kerberos relaying🕵️♂️
https://decoder.cloud/2025/04/24/from-ntlm-relay-to-kerberos-relay-everything-you-need-to-know
#infosec #cybersecurity #pentest #redteam #kerberos #activedirectory #windows
➡️ Du möchtest mehr Sicherheit und Komfort im #Admin-Alltag und Dein Know-how im Bereich Single sign-on mit #Kerberos und #LDAP vertiefen? Wir haben wegen großer Nachfrage einen exklusiven Termin zum Thema ins Schulungsprogramm aufgenommen.
Unser Dozent Stefan Kania zeigt, wie man einen Kerberos-Server einrichtet, ausfallsicher repliziert und zusammen mit LDAP und #DNS eine Single sign-on Umgebung aufbaut.
👉 Jetzt anmelden:
https://www.heinlein-support.de/news/schulungstermin-single-sign-kerberos-ldap
For cost optimization of our infrastructure, all further Kerberos Tickets can be bought on the published pre-sale appointments on our pretix shop. Good luck!
(Inspired by @FlohEinstein) #pretix #kerberos
Policy as Code в Apache Kafka: опыт внедрения Open Policy Agent
Статья рассматривает внедрение Open Policy Agent (OPA) для управления авторизацией в кластерах Apache Kafka на bare metal‑серверах. В рамках статьи проанализированы ограничения стандартных ACL и предложено решение на основе Open Policy Agent (OPA), обеспечивающее декларативное управление доступом через Policy as Code (PaaC). Особое внимание уделено обновлению OPA Kafka Plugin: создан pull request, в котором устранены уязвимости превносимые в OPA библиотекой Guava и реализован переход на более производительную библиотеку Caffeine. Описан процесс интеграции OPA с Kafka, включая автоматизацию доставки политик через Bundle API и S3-хранилище.
Patch Tuesday d’avril 2025 : votre Active Directory est-il prêt pour la validation du PAC ? https://www.it-connect.fr/patch-tuesday-davril-2025-votre-active-directory-est-il-pret-pour-la-validation-du-pac/ #ActiveDirectory #Cybersécurité #Kerberos #Windows
I've created the first alpha release of libkirmes, a Rust and C library which provides an API to access the systemd userdb.
It will be used in our localkdc project to enrich user information of a user in our kerberos database with information from the local userdb.
New Open-Source Tool Spotlight 🚨🚨🚨
Rubeus is a post-exploitation tool for Kerberos-related tasks on Windows. It supports ticket extraction, pass-the-ticket attacks, ticket forging, and more. A powerful choice for understanding and simulating Kerberos security flaws.
#CyberSecurity #Kerberos #RedTeam
🔗 Project link on #GitHub 👉 https://github.com/GhostPack/Rubeus
#Infosec #Cybersecurity #Software #Technology #News #CTF #Cybersecuritycareer #hacking #redteam #blueteam #purpleteam #tips #opensource #cloudsecurity
— ✨
🔐 P.S. Found this helpful? Tap Follow for more cybersecurity tips and insights! I share weekly content for professionals and people who want to get into cyber. Happy hacking 💻🏴☠️
Обнаружение атаки Kerberoasting с использованием машинного обучения: от теории к практике
В эпоху стремительного роста угроз информационной безопасности защита корпоративных сетей становится критически важной. Одной из серьезных и довольно распространенных угроз является атака Kerberoasting, которая позволяет злоумышленнику, имеющему лишь базовые привилегии, извлечь хэш пароля сервисной учетной записи. В этой статье описывается, как методы машинного обучения помогают решению класса NTA обнаружить такую атаку в режиме реального времени. Дополнительно приводятся подробности реализации прототипа, экспериментальные результаты и ссылка на исходный код, опубликованный на GitHub.
https://habr.com/ru/articles/894216/
#kerberoasting #machine_learning #oneclass_svm #lof #kerberos
Kerberoasting w/o the TGS-REQ
This article introduces an alternative Kerberoasting technique that doesn't require sending TGS-REQs to the Key Distribution Center (KDC).
Теневая сторона драгоценностей: Diamond & Sapphire Ticket
Вы уже разобрали Silver и Golden Ticket? Это лишь прелюдия. Diamond & Sapphire — последние «сокровища» в цепочке уязвимостей с билетами. В статье рассмотрим: ✅ Эволюция атак : от серебра с золотом — к алмазам и сапфирам. ✅ Хакерский workflow : как создать "драгоценные" билеты. ✅ Противостояние : артефакты и детекторы на Sigma, чтобы ловить даже призрачные следы.
https://habr.com/ru/articles/891620/
#activedirectory #kerberos #cybersecurity #diamondticket #sapphireticket
Kerberos – Apostle to the Malevolent Review
By Saunders
Symphonic death is a tricky subgenre to nail. While there are skilled exponents, bands peddling the dramatic style tread a fine line in balancing the ornate orchestral elements and heavy-hitting metal, without diminishing one or the other of the fused components. Such as the symphonic elements feeling tacked on or the metal edge blunted. Overall, it’s a mixed formula for yours truly, though I am certainly not opposed to the style when executed well (Fleshgod Apocalypse, Zornheym, Septicflesh, Dreamgrave). Hailing from Switzerland and sporting a bombastic, prog-infected symphonic death sound, unheralded act Kerberos aim to make their mark on the scene with their second album, Apostle to the Malevolent. Not one to do the style in half measures, Apostle to the Malevolent jams a multitude of orchestral elements and symphonic flair to otherwise traditional metal instrumentation, creating a colorful sound that on surface levels ticks all the boxes for a good time for enthusiasts of the style. Kerberos manage to cram all their sophisticated ideas, choirs and orchestra into a lean runtime, clocking in a shade under the half-hour mark. But can Kerberos back up the bombast and efficiency with gripping songwriting?
The first couple of the five tracks comprising Apostle to the Malevolent will likely weed out the non-believers. Opening instrumental “Praeludium in H Moli” plays into the band’s flair for orchestral dramatics with mixed results, setting the scene for first proper track, “Near-Violence Experience.” Apostle to the Malevolent credits a Kerberos choir and orchestra in addition to the core foursome. The elaborate nature of the band’s vision is reflected in the song’s crunchy riffs, busy arrangement, densely layered instrumentation, and dueling male-female vox; ranging from operatic female contributions and a strange mix of deep male clean singing and harsher growls. It’s an ambitious tune, if a little scattershot. The impressive musicianship, countered by the overstuffed and convoluted nature of the arrangement, prevents it fully lifting off.
Vocally, the male cleans come across as melodramatic and more than a little cheesy. However, Ai-lan Metzger’s stirring vocals and accompanying choirs lend the album a vibrant voice to match the swelling orchestral touches. When traded off with the harsher variations, the impact is more forceful. On the other hand, Félicien Burkard (who also handles guitars and fretless bass) clean vox are an unwelcome distraction. Kerberos lean further into the goth-tinged symphonic dramatics on “Alpine Sea,” another example of the band’s solid skills and exuberant talents, marred by a longer than needed runtime and questionable vocal transitions. The most successful example of Kerberos’ talents resides in mid-album cut “Liar Within.” it doesn’t greatly deviate from the rest of the album. However, the ingredients flow with greater fluency, while the increased aggression, speed and thrashy urges lend some extra punch to the soaring vocal hooks and lush symphonics.
Song length remains a recurring issue. As previously stated, the album is short and sweet, though several individual tracks struggle to maintain interest across their heftier lengths (including nine-minute closer “Apostle to the Malevolent”). On the plus side, some tasty material is scattered throughout, flashing the potential for Kerberos to deliver something more substantial and fully formed down the track. Importantly for any symphonic metal project, the orchestral elements don’t sound like tacked on afterthoughts, bolstered by a bright, dynamic production. However, occasionally the instruments seem to fight and jostle for space, creating a clunkier feel to certain sections, leading to some overkill and awkward results. This may present a case for Kerberos and their additional friends to refine and declutter their sound to more potent effect. The mixed bag vocals also require some work, the attempts at deeper growls and Burkard’s questionable cleans could use some tuning up.
Symphonic metal can go either way for me, and I am often especially selective with what floats my boat. Kerberos deliver an intriguing LP, featuring enough positives to find a solid audience on board with their particular brand of grandiosity and gothy-drama. Unfortunately, Apostle to the Malevolent is a messy affair, which feels unnecessarily bloated and convoluted despite its scant length. When they hone their songwriting focus into more aggressive, urgent realms and let the riffs do the heavy lifting, the band’s potential shines brightly. There remains some solid material and classy elements, with ample room for growth and refinement for Kerberos to match their ambitious vision with tighter songwriting chops.
Rating: 2.5/5.0
DR: 8 | Format Reviewed: 320 kbps mp3
Label: Self-Released
Websites: Bandcamp | Facebook
Releases Worldwide: March 14th, 2025
#25 #2025 #ApostleToTheMalevolent #Dreamgrave #FleshgodApocalypse #IndependentRelease #Kerberos #ProgressiveMetal #Review #Reviews #SelfRelease #SepticFlesh #SwissMetal #SymphonicDeathMetal #SymphonicMetal #Zornheym
Client Info
Server: https://mastodon.social
Version: 2025.04
Repository: https://github.com/cyevgeniy/lmst