Introduction to NTLM Security NTLM (NT LAN Manager) is a challenge-response authentication protocol used by Windows when Kerberos is not available—for example when accessing resources by IP address instead of hostname, in workgroup environments, or when connecting to legacy systems. While Kerberos is the preferred protocol, NTLM is still present in virtually all Windows environments […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2021-1713 Related CVEs: CVE-2021-3246 CVE-2022-33065 CVE-2021-4156 CVE-2018-13139 CVE-2018-19662 Upstream summary: A heap buffer overflow flaw was found in libsndfile. This flaw allows an attacker to execute arbitrary code via a […]
🟡 Medium ⏱ 10–30 min Last verified: 4 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2023-2312 Related CVEs: CVE-2020-36518 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Learn how to use Python’s type() function to check data types and create dynamic classes. Includes syntax, examples, and practical tips.
🟠 High ⏱ 15–60 min Last verified: 4 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-24267 Related CVEs: CVE-2022-1962 CVE-2022-2880 CVE-2022-2879 CVE-2022-28131 CVE-2022-41715 CVE-2022-30633 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
URL: https://www.progressiverobot.com/install-tomcat-on-linux/ Let's cover the steps to install Tomcat on Linux today. We have already covered the steps for [installation on CentOS here](/community/tutorials/install-apache-tomcat-9-centos-7). In this tutorial, we'll use Ubuntu to demonstrate the installation. You can follow this tutorial even if you're on a different distribution. To do so, make sure you use the package manager […]
🟠 High ⏱ 15–60 min Last verified: 4 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2022-9689 Related CVEs: CVE-2022-2588 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Uma Virtual Private Network (VPN) permite que você atravesse redes não confiáveis como se estivesse em uma rede privada. Ela dá a você a liberdade de acessar a internet com segurança no seu smartphone ou notebook ao se…
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: OpenBSD 7.4 📖 ~4 min read • Source: OpenBSD 7.4 errata 014_vmm Errata topic: Security: vmm (amd64) Issued: February 29, 2024 Upstream summary: vmm(4) did not restore GDTR limits properly on Intel (VMX) CPUs. Table of contents Symptom & Impact Environment & […]
Why Use DHCP Failover? In any production Active Directory environment, DHCP is a critical infrastructure service. If your single DHCP server goes offline — even briefly for maintenance or due to an unexpected failure — clients that attempt to renew or obtain leases will fail, resulting in lost network connectivity. While clients hold their existing […]
