Category ✅

Know the fail-open setting and the engine state. ipsmonitor tells you if the engine is dead and what the policy will do next. Techclick CLI lab: symptoms, commands, traps, and proof.

SIP session-helper or VoIP profile is rewriting SDP wrong, or RTP is not expected. Diagnose the helper and the VoIP profile before you NAT more ports. Techclick CLI lab: symptoms, commands, traps, and proof.

Relay must see the discover on the client VLAN and forward to the helper IP. dhcprelay debug shows which side is silent. Techclick CLI lab: symptoms, commands, traps, and proof.

Idle means TCP 179 never established. Check source IP, update-source, and whether the neighbor is on the correct VRF/VDOM. Techclick CLI lab: symptoms, commands, traps, and proof.

If the MPLS health-check is dead, SD-WAN will skip that member. Fix the probe, do not rewrite the rule first. Techclick CLI lab: symptoms, commands, traps, and proof.

diagnose debug flow shows the real incoming interface, NAT, and the policy that actually matched — often implicit deny or a different policy. Techclick CLI lab: symptoms, commands, traps, and proof.

conserve mode is memory pressure. Find what ate RAM, fail new proxy sessions if needed, then clear the abuser. Reboot is last. Techclick CLI lab: symptoms, commands, traps, and proof.

diagnose sys ha status on both boxes. If both say primary, heartbeat is dead. Restore HA1/HA2 first, then decide which config wins. Techclick CLI lab: symptoms, commands, traps, and proof.

The app pins certificates. Exempt that FQDN from deep inspection. wad debug confirms the inspect policy that hit. Techclick CLI lab: symptoms, commands, traps, and proof.

Web mode is reverse proxy. Tunnel mode is a full adapter. Debug sslvpn and check the tunnel IP pool, split-tunnel, and FortiClient version. Techclick CLI lab: symptoms, commands, traps, and proof.

If you are facing this kind of issue, you should use some cli command to fix issue- You need to first take the packet capture on the FGT side by using the sniffer as below: dia sniffer packet any " host <DST IP> and icmp " 4 0 l Can you try to run the following debug to see if traffic is allowed and passing through the tunnel correctly: diag debug reset diag debug flow filter addr X.X.X.X (replace with destination IP)diag debug flow filter proto 1diag debug flow show ip e

SHOW COMMANDS: show : Show global or vdom config show system interface : Equivalent to show run interface diagnose hardware deviceinfo nic : Equivalent to show interface get system status : show version information get system arp | diagnose ip arp list : Shows the arp table of connected hosts get router info routing-table all : display routing table sh firewall policy <id>: show firewall rule numer “ID” sh router policy : Show Policy Routing rules DIAGNOSE COMMANDS: diagnose

1. What is FortiWeb, and why is it important for web application security? Answer : FortiWeb is a web application firewall (WAF) designed to protect web servers and applications from external threats such as SQL injection, cross-site scripting (XSS), and other vulnerabilities as outlined in the OWASP Top Ten. It uses multiple layers of protection, including IP reputation, attack signatures, and machine learning-based detection, to safeguard web applications from both known an

IPsec VPN Troubleshooting in Fortigate firewall - Follow below steps to troubleshoot this kind of issue- 1. VPN Tunnel Issues: Frequent Tunnel Downtime: Use diagnose vpn tunnel list to check tunnel status. Ensure correct pre-shared key to avoid PSK mismatch errors. Clear existing VPN tunnels with diagnose vpn ike restart and diagnose vpn ike gateway clear . 2. SA Proposal Mismatch: Check and match the SA proposals on both ends of the VPN connection. Commands: diag vpn ike

IP Sec VPN Troubleshooting SSL VPN client to site/Remote Access debug