Server: Fully-patched 2008 R2, running Certificate Services. The /certsrv virtual directory is using (I believe) default settings. Specifically, this means it's using Windows Authentication, with NTLM ...

Several readers responded to my previous post on pass-the-hash attacks, asking if Kerberos authentication versus LANManager, NTLM, or NTLMv2 was an effective defense. It’s a good question, one that I ...

Microsoft is investigating a new known issue causing enterprise domain controllers to experience Kerberos authentication problems after installing security updates released to address CVE-2020-17049 ...

Yaron Kassner, CTO at Silverfort, discusses authentication-bypass bugs in Cisco ASA, F5 Big-IP, IBM QRadar and Palo Alto Networks PAN-OS. Authentication is the front gate to security systems, so if ...

Account administration in a distributed UNIX/Linux environment can become complicated and messy if done by hand. Large sites use special tools to deal with this problem. In this article, I describe ...

As the main authentication protocol for Windows enterprise networks, Kerberos has long been a favored hacking playground for security researchers and cybercriminals alike. While the focus has been on ...

While Windows IT professionals deal with security on a daily basis, very few understand the under-the-hood protocol, Kerberos. Kerberos is a security protocol in Windows introduced in Windows 2000 to ...

At work we have an intranet web server that is Running DotNetNuke for our intranet portal. I have been having issues with people not authenticating properly after they change their password ...

Microsoft is working on a fix for a bug in last week's patch for a bypass vulnerability in the Kerberos Key Distribution Center (KDC) security feature. Microsoft has flagged the issue affecting ...