Firewall

pr cp 115614 r2

NFS Mount Fails with SELinux Context Issues

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 πŸ“– ~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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pr cp 123197 r2

FreeBSD 13 – IPFW rules disappear after reboot due to rc.conf ordering – Fix & Prevention

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 13 πŸ“– ~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 & […]

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pr cp 115135 r2

RHEL 8 Cockpit Web Console Unreachable on Port 9090 – RHEL 8 Post 124

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 πŸ“– ~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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pr cp 126201 r2

SLES 15 – Common Problem 124 – Diagnosis and Fix

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: SUSE Linux Enterprise Server 15 πŸ“– ~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 […]

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pr cp 115604 r2

Postfix Cannot Send Mail Due to Firewall Restrictions

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 πŸ“– ~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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pr cp 122691 r2

FreeBSD 14 – outbound traffic blocked unexpectedly by PF ruleset ordering – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 14 πŸ“– ~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 & […]

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pr cp 123687 r2

FreeBSD 12 – sendmail queue backlog grows due to DNS lookup failures – Fix & Prevention

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 12 πŸ“– ~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 & […]

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pr cp 126191 r2

SLES 15 – Common Problem 123 – Diagnosis and Fix

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: SUSE Linux Enterprise Server 15 πŸ“– ~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 […]

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pr cp 121682 r2

Debian 9 – node exporter stops reporting metrics after reboot – Fix & Prevention

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 9 πŸ“– ~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 & […]

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pr cp 123187 r2

FreeBSD 13 – sendmail queue backlog grows due to DNS lookup failures – Fix & Prevention

🟑 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: FreeBSD 13 πŸ“– ~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 & […]

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