Ubuntu 16.04

Ubuntu 16.04 — yara — multiple vulnerabilities (17 CVEs) — patch and remediation guide

• January 24, 2021
• Linux
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🟠 High   ⏱ 15–60 min  Last verified: 24 January 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8080-1 Related CVEs: CVE-2018-19976 CVE-2017-9304 CVE-2018-19974 CVE-2017-8294 CVE-2018-12034 CVE-2017-8929 CVE-2021-45429 CVE-2017-11328  +9 more Upstream summary: Kamil Frankowicz discovered that a number of YARA's functions generated memory exceptions when processing specially […]

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How to Install Bro on Ubuntu 16.04

• January 24, 2021
• Linux
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Bro is an open-source network analysis framework and security monitoring application. It brings together some of the best features of OSSEC and osquery into one nice package. In this article, you’ll install Bro from source on Ubuntu 16.04 in standalone mode.

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How To SSH Securely with Kryptonite on the cloud provider

• January 21, 2021
• Linux
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SSH is the primary way of connecting to remote Linux servers. Securing this channel is essential to maintaining a secure infrastructure. Kryptonite is a secure solution to protecting your SSH private key. In this guide, you will generate an SSH key pair with Kryptonite on your phone, pair your phone with your local computer, and use Kryptonite to SSH into a cloud servers.

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UFW Blocks SSH or Application Ports Unexpectedly

• January 19, 2021
• Tutorials
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🟡 Medium   ⏱ 5–30 min  Last verified: 19 January 2021 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Ubuntu 16.04 LTS Docker daemon fails with overlay2 mount errors

• January 18, 2021
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 18 January 2021 Affected versions: 16.04 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs […]

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Ubuntu 16.04 LTS DNS resolution fails intermittently on production hosts

• January 18, 2021
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 18 January 2021 Affected versions: 16.04 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs […]

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Ubuntu 16.04 LTS GRUB update fails after manual disk layout changes

• January 15, 2021
• Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 15 January 2021 Affected versions: 16.04 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs […]

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PHP-FPM Socket Permission Denied with Nginx or Apache

• January 14, 2021
• Tutorials
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🟡 Medium   ⏱ 5–30 min  Last verified: 14 January 2021 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Ubuntu 16.04 LTS – apt update shows NO_PUBKEY signature failures

• January 13, 2021
• Linux
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🟠 High   ⏱ 5–30 min  Last verified: 13 January 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]

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How To Create a Kubernetes Cluster Using Kubeadm on Ubuntu 16.04

• January 11, 2021
• Docker
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Kubernetes is a container orchestration system that manages containers at scale. In this guide, you will set up a Kubernetes cluster from scratch with Kubeadm and deploy containerized applications on it.

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