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.
Welcome to My Playbook
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.
Secure File Transfers: Moving Beyond TFTP to SCP in Enterprise Networks
Upgrade your network management security. A practical guide to configuring and using SCP for firmware and configuration transfers on Cisco switches.
Retrieving Microsoft 365 Tenant ID with PowerShell
A practical guide for network engineers to quickly retrieve a Microsoft 365 Tenant ID using the Microsoft Graph PowerShell SDK for automation and API integrations.
Configuring Switch Ports for IP Telephony
Master IP telephony port configuration. Learn how to handle Voice VLANs, LLDP-MED, and QoS on Aruba CX and Cisco switches while avoiding common DHCP and PoE pitfalls.
Configuring FortiGate Local-In Policies: Hardening the Control Plane
Learn how to secure your FortiGate's control plane using local-in policies. Learn CLI configuration, handle auto-created rules, and restrict VPN access by geography.
How to Add Custom Cloud Applications and Rules in Zscaler
Learn how to define custom cloud applications in Zscaler and create Cloud App Control rules to manage access, track usage, and enforce security policies.