Troubleshooting

An issue where users accessing certain websites through a FortiGate explicit proxy (with the FortiGate CA certificate imported into client

We recently encountered a perplexing issue with the explicit proxy configuration on our FortiGate 121G running FortiOS 7.4.7, specifically when

Introduction As networking professionals, we rely on tools like NetFlow and PCAP (packet capture) to monitor, troubleshoot, and secure our

I recently encountered an issue with the proxy chain function on a FortiGate 121G running FortiOS 7.4.7, and I wanted

I’m troubleshooting an unstable IPsec VPN where one peer is behind NAT, using UDP 500/4500, with issues like random firewall

As a network administrator managing FortiGate firewalls, I’ve encountered several critical but unannounced issues with FortiOS 7.4.7 on the FortiGate

Introduction Deploying a Proxy Auto-Configuration (PAC) file to manage network traffic routing is a powerful way to control proxy usage

What is Dead Peer Detection (DPD)? Dead Peer Detection (DPD) is a mechanism used in IPsec VPNs to determine whether

I’ll explain each one step-by-step, structured logically to help you understand their purpose, how they fit into the IPsec framework,

What’s Nmap? Nmap (Network Mapper) is like a lazy guy’s spy kit—it scans networks, finds devices, and tells you what’s

IPsec VPNs are critical for securely connecting distributed sites, such as a core office with a Palo Alto PA-820 firewall

In a previous analysis, detailed in The Curious Case of Deny Logs in Palo Alto SSL Decryption: A Troubleshooting Journey

I recently added Cloudflare CDN to my WordPress site on Linode, updated GoDaddy nameservers to Cloudflare, and bam—every link hit

If you’re familiar with Cisco’s Management VRF, where management traffic is isolated into a separate routing domain, you might wonder

As a network engineer managing a mixed environment—Cisco, Juniper, FortiADC, and AWS CDN—I recently hit a head-scratcher that didn’t have

Traffic flow: AWS > Firewall > reverse proxy > Paloalto > Load balancer > Backend server If you’ve ever stared

If you’re managing a FortiADC device and rely on its auto backup feature to keep your configurations safe, you might