Mitigating Fragnesia (CVE-2026-46300) on Ubuntu Server
A practical guide to assessing, mitigating, and patching the Fragnesia (CVE-2026-46300) kernel vulnerability on Ubuntu Server to prevent privilege escalation.
#troubleshooting
Archive of posts categorized under this tag.
Troubleshooting Localized DHCP Failures on Aruba CX Switches
A practical walkthrough of troubleshooting a localized DHCP failure on an Aruba 6200 CX switch caused by strict DHCP snooping and stale client bindings.
Upgrading to FortiGate 70G: Resolving IPsec VPN Sync Issues
Resolving dropped packet and sync issues over IPsec VPNs when upgrading to FortiGate 70G by migrating from MTU overrides to TCP-MSS clamping.
Azure VM Repair Guide: DISM Component Store Fix + Bootloader Recovery
Guide to fixing DISM Error 0x800f081f in Azure via offline registry surgery and resolving BCD bootloader collisions.
How to Restart the DHCP Service on a FortiGate Firewall
A practical guide to restarting the FortiGate DHCP daemon (dhcpd) via CLI to resolve hangs or failures without rebooting the firewall or interrupting traffic.
The Hidden Culprit Behind 'Slow' Enterprise Wi-Fi: Apple Private Relay Exposed
Apple Private Relay can cause 'slow internet' complaints on enterprise networks. Learn why this privacy feature breaks security and how to fix it at the firewall.