Technical Tip: FortiGuard Overview and Troubleshoo...

Sachin_Alex_Cherian_ · 03-01-2024

Description This article describes every aspect of FortiGuard-related communications initiated from a device such as FortiGate. Scope FortiGuard - Introduction: FortiGuard Subscriptions/Services. FortiGuard Methods - Live Querying vs Databases: Live ...

Sachin_Alex_Cherian_ · 01-08-2024

Description This article describes how to log and monitor the single CPU core usage spike. Scope FortiGate with multiple CPU cores; FortiOS version 7.2.4 and above. Solution The System event generally records the CPU usage every 5 minutes by default ...

Sachin_Alex_Cherian_ · 06-28-2022

Description This article describes how to view the actual client IP details in the FortiGate logs when the FortiGate is receiving the traffic from a proxy device connected to its LAN segment. Scope FortiGate v.6.0.0 or higher FortiGate is handling pa...

Sachin_Alex_Cherian_ · 05-30-2022

Description This article explains the format to properly add the SAN (Subject Alternative Name) while generating CSR (Certificate Signing Request). Scope FortiGate, FortiProxy. Solution The CSR can be generated from System -> Certificates -> Generate...

Sachin_Alex_Cherian_ · 05-17-2022

Description This article explains how to overcome vulnerabilities related to SSH Weak Message Authentication Code Algorithms. Scope When doing vulnerability assessments against the FortiGate. For FortiOS version 7.0 and upper. Solution The vulnerabil...

Sachin_Alex_Cherian_ · 04-02-2023

Hi, Yes, This is possible. Please have a look at the below links: https://community.fortinet.com/t5/FortiGate/Technical-Note-How-to-configure-an-IPsec-tunnel-in-interface/ta-p/191808 https://community.fortinet.com/t5/FortiGate/Technical-Tip-Best-prac...

Sachin_Alex_Cherian_ · 03-30-2023

Hi Walter, When VIP is configured with port forwarding, you need to consider whether it gets triggered or not. In your case, "vip" (which forwardis all ip) or a "vip with port-forwarding": ; effectively is the same because you mentioned 1-65535 ports...

Sachin_Alex_Cherian_ · 03-27-2023

Hi Walter, Setting 'nat-source-vip' controls how the snat applies and is done in the following order: 1. reverse SNAT according to the VIP if nat-source-vip enabled; otherwise2. ippool specified in the policy (lan to wan policy)3. reverse SNAT accord...

Sachin_Alex_Cherian_ · 03-23-2023

Hi, SDWAN has 4 implicit methods of load balancing one of which is source-ip-based. The below link explains in brief regarding the same. https://docs.fortinet.com/document/fortigate/6.2.13/cookbook/683285/selecting-the-implicit-sd-wan-algorithm Have ...

Sachin_Alex_Cherian_ · 03-22-2023

Hi, The log event is related to an IPS event: type="utm" subtype="ips" eventtype="signature" If you are sure this signature needs to be allowed or whitelisted, you may follow the below document which explains the same: https://community.fortinet.com/...

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Technical Tip: FortiGuard Overview and Troubleshooting

Technical Tip: Enable logging for single core CPU spike against System Event logs

Technical Tip: How to view/log actual client IP on FortiGate when traffic is received from a proxy server

Technical Tip: Adding SAN (Subject Alternative Name) while generating CSR (Certificate Signing Request)

Technical Tip: How to avoid the use of SSH Weak Message Authentication Code Algorithms

Re: FortiGate with IPSec VPN bounded to the loopback/lan interface

Re: VIP (DNAT) effect on SNAT behavior

Re: VIP (DNAT) effect on SNAT behavior

Re: SDWAN tuning

Re: HTTP.Server.Authorization.Buffer.Overflow question

Technical Tip: FortiGuard Overview and Troubleshoo...

Technical Tip: Adding SAN (Subject Alternative Nam...

Re: how to block 5000 public IP

Technical Tip: Enable logging for single core CPU ...

Re: Use MGMT interface as source-ip for radius

Re: VIP (DNAT) effect on SNAT behavior

Re: HTTP.Server.Authorization.Buffer.Overflow ques...

Re: Dialup VPN : Strange tracroute

Re: Dialup VPN : Strange tracroute

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