Category Archives: FortiGate

6 March, 2020

Debugging Fortigate GUI from the CLI

Debug FortiGate GUI from CLI using diag debug cli. Track down unidentifiable errors and script upload failures by viewing background CLI commands and logs.

10 February, 2020

SSL VPN Realms with Custom URLs

Configure FortiGate SSL VPN custom URLs for separate realms. Set distinct authentication methods for contractors and employees using custom domain names.

2 February, 2020

Bridged FortiAPs and Managing Remote Switches Across the Bridge

Configure a FortiGate wireless bridge to extend VLANs and manage remote FortiSwitches via FortiLink. Includes AP profile and LLDP settings.

18 January, 2020

VX-LAN over IPSec using Fortigate Firewalls

Configure Fortigate VXLAN over IPSec to extend Layer 2 networks. Includes Phase I/II setup, soft-switch commands, and firewall policies for working tunnels.

17 January, 2020

Policy Disclaimer Option in FortiOS 6.2.3

Enable the policy disclaimer option in FortiOS 6.2.3. Assign custom replacement message groups to specific firewall policies for user notifications.

17 January, 2020

Policy Advanced Options in FortiOS 6.2.3

Enable FortiOS Policy Advanced Options in 6.2.3. Learn to use negate source, assign policy IDs, and allow TCP sessions without SYN for stable traffic.

11 January, 2020

FortiWifi with Tunnel and Bridge SSIDs

Learn how to configure FortiWifi tunnel and bridge SSIDs on a local radio. Set up guest and internal networks on a single FortiGate device...

7 January, 2020

What Diffie-Hellman (DH) Group Should I Use

Learn Diffie-Hellman group selection for secure VPNs. Choose the right DH group for AES 128 or 256-bit keys and avoid weak groups like 24.

7 January, 2020

Fortinet Ports and Protocols

Find the exact Fortinet ports and protocols for FortiGate, FAZ, FMG, and more. Configure your firewall rules for Zero Trust environments with this cheat...

5 January, 2020

FortiAnalyzer Primer

Master the FortiAnalyzer interface overview. Learn to navigate ADOMs, Device Manager, SOC views, and log filtering for effective security monitoring.

1 January, 2020

Troubleshooting BGP on Fortigate Firewalls

Troubleshooting BGP on Fortigate firewalls using CLI commands. Check neighbor status, verify advertised routes, and apply prefix lists for precise control.

31 December, 2019

Wrong Egress Interface when using VPN

Resolve FortiGate VPN egress interface routing issues. Learn how to fix return traffic path problems in route-based site-to-site VPNs with BGP.

14 December, 2019

Password Recovery Options on the Fortigate firewall

Recover a lost FortiGate admin password using the maintainer account or TFTP reload. Step-by-step instructions for serial console access and factory resets.

11 December, 2019

Complex Passwords for your Fortigate Firewall

Enforce FortiGate password complexity for NIST and PCI DSS compliance. Configure CLI password policies and enable 2FA for admin accounts.

8 December, 2019

How to use Replacement Message Groups on FortiGate firewalls

Learn to enable and assign FortiGate Replacement Message Groups via CLI. Configure custom UTM and Auth blocks for specific firewall policies and security profiles.

6 December, 2019

Updating Images in Fortigate Replacement Messages

Learn how to update the FortiGate replacement message image. Upload a custom logo and modify the HTML code to display your brand on blocked...

5 December, 2019

FortiOS AutoScript from CLI

Learn to create and schedule FortiOS AutoScript CLI commands. Configure automated tasks, triggers, and email alerts in FortiOS 6.2 and later versions.

12 November, 2019

Troubleshooting IPSec VPNs on Fortigate Firewalls

Master Fortigate IPSec VPN troubleshooting with diagnose commands. Fix Phase I mismatches, PFS errors, and selector issues using real debug output examples.