Category Archives: Microsoft Windows Server 2012 R2

Hybrid Identity features per Active Directory Domain Services Domain Controller Operating System, Domain Functional Level, Forest Functional Level and Schema version

Most Microsoft-based Hybrid Identity implementations use Active Directory Federation Services (AD FS) Servers, Web Application Proxies and Azure AD Connect installations. These components have requirements of Active Directory Domain Services (AD DS) in terms of the schema, the Windows Server versions on the Domain Controllers an organization runs, the Domain Functional Level (DFL) and the […]

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Use your F5 BIG-IP Appliance as Full-Fledged AD FS Web Application Proxy

With the release of version 13.1 of its BIG-IP software, F5 Networks enables you to make your F5 BIG-IP series appliances and F5 Virtual Edition (VE) appliances to act as ful-fledged Web Application Proxies in combination with Windows Server 2012 R2 and/or Windows Server 2016-based Active Directory Federation Services (AD FS) Servers using MS-ADFSPIP. About […]

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Important Update for Active Directory Federation Services (MS17-019, KB4010320, CVE-2017-0043)

Today, for its March 2017 Patch Tuesday, Microsoft released an important security update for Active Directory Federation Services (AD FS). The security update addresses a vulnerability that could allow information disclosure if an attacker sends a specially crafted request to an ADFS server, allowing the attacker to read sensitive information about the target system..   […]

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Critical Flaw in SMB1 could allow remote code execution on Active Directory Domain Controllers (MS17-010, KB4013389)

Today, for its March 2017 Patch Tuesday, Microsoft released a security update for supported versions of Windows Server offering File Sharing services using the Server Message Block (SMB) version 1.0 protocol. The security update addresses the vulnerabilities by correcting how SMBv1 handles specially crafted requests.   About the vulnerabilities The vulnerabilities that are fixed with […]

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From the field: Colleagues in specific group encounter error “AADSTS50107 Requested federation realm object does not exist.”

Sometimes, you hit error messages that are just too vague to troubleshoot. I like these kinds of situations. This particular one is especially fun, because it requires some intermediate knowledge of Active Directory Federation Services in Hybrid Identity environments. My favorite subject.   The situation Single Sign-On (SSO) for organizations comes in many shapes and […]

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An entirely new Management Pack for Active Directory on Windows Server 2016 is now available

When organizations embrace new versions of software in a structured way, they end up with checklists, much like the ones I wrote for Windows 7 and Windows 8. Migrating end-user device Operating Systems (OSs), however, is different to embracing a new version of the Windows Server Operating System (OS). From an information security point of […]

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Security Thoughts: Update for Windows Authentication Methods (KB3178465, MS16-101, CVE-2016-3237, CVE-2016-3300, Important)

Yesterday, during its August Patch Tuesday, Microsoft released security update KB3178465 for Windows Authentication Methods, among other security-related updates. This update addresses two vulnerabilities in Microsofts implementation of its authentication methods in Active Directory scenarios: CVE-2016-3237 and CVE-2016-3300.   About the vulnerabilities Microsoft Kerberos Elevation of Privilege Vulnerability (CVE-2016-3237) A security feature bypass vulnerability exists […]

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Security Thoughts: Vulnerability in Active Directory could allow denial of service (MS16-081, KB3160352, CVE-2016-3226)

This entry is part 4 of 4 in the series June 2016 Patch Tuesday

Yesterday, Microsoft released update 3160352 as part of its June 2016 Patch Tuesday to address an important vulnerability in Active Directory, allowing denial of service. This security update is rated Important for all supported editions of Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 About the vulnerability A vulnerability has been […]

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Security Thoughts: Vulnerability in Netlogon could allow remote code execution (MS16-076, KB3167691, CVE-2016-3228)

This entry is part 3 of 4 in the series June 2016 Patch Tuesday

Yesterday, Microsoft released update 3167691 as part of its June 2016 Patch Tuesday to address an important vulnerability in Windows Server’s Netlogon functionality, allowing remote code execution on all supported Windows Server versions. About the vulnerability A vulnerability has been detected, that could allow remote code execution if an attacker with access to a Windows […]

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Security Thoughts: Vulnerability in Group Policy could allow elevation of privilege(MS61-072, KB3163622, CVE-2016-3223)

This entry is part 2 of 4 in the series June 2016 Patch Tuesday

Yesterday, Microsoft released update 3163622 as part of its June 2016 Patch Tuesday to address an important vulnerability that affects Group Policy on Windows 10.   About the vulnerability The vulnerability could allow elevation of privilege if an attacker launches a man-in-the-middle (MiTM) attack against the traffic passing between a domain controller and the target […]

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