Troubleshooting Tip: Downgrade of FortiOS fails du...

vtsonev · 07-28-2023

Description This article describes downgrade issues due to an enhanced BIOS-level signature and file integrity checking. A solution is offered. Scope FortiGate running BIOS version 5000100, 6000100, or newer. Solution If the FortiGate device is runni...

vtsonev · 06-03-2021

Description This article describes the reason why certificates cannot be removed.Solution Sometimes, it could happened that imported certificate needs to be deleted and the 'Delete' button is greyed out.First of all, check if there is any 'Reference'...

vtsonev · 11-06-2020

DescriptionThis article provides some explanations regarding multipath capability used by Fortinet and describes the way to read and understand the values from the '# get router info bgp network' output.External link.https://tools.ietf.org/html/rfc79...

vtsonev · 05-02-2009

DescriptionThis article provides explanations on how to redistribute default route in OSPF with different metric, so the peer will get the route with lower than the default metric of 10.SolutionFollowing syntax is used to advertise a default route in...

vtsonev · 03-15-2022

Hello, In order to give you answer of that question we will need some more details about your network and topology. Please contact sales representative in your region to discuss this topic. You can check the list here https://www.fortinet.com/corpora...

vtsonev · 03-14-2022

Hi, Have you tried to perform the changes on the Fortigate directly ? Is the same issue reproducible there, or it's only when you try from the Fortimanager? You mentioned in your first comment that delete via Fortimanager GUI works fine too, so as fa...

vtsonev · 03-14-2022

Hi Ramunas, Thank you for your update! I see what is the problem. Fortigate sniffer is capturing the packets when they are received in the CPU. The "in" incoming direction is not a decision on the Fortigate, so if you see wrong interface on incoming ...

vtsonev · 03-14-2022

Hi, Can you please share which Fortigate model you try to configure and which version OS of FortiManager you are using? Best regards, Vasil

vtsonev · 03-14-2022

Hi, Is your IPsec bounded to an loopback interface on the Fortigate ? If so, please make sure you have IPv4 policy to allow traffic between the loopback and the wan interface. Maybe would be easier if you can share with us the phase1 and phase2 confi...

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Troubleshooting Tip: Downgrade of FortiOS fails due to BIOS check

Technical Tip: Unable to remove certificate: delete button is greyed out

Technical Tip: Usage of BGP multipath and description of the BGP NLRI table

Technical Tip: How to redistribute a default route in OSPF

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Troubleshooting Tip: Downgrade of FortiOS fails du...

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Re: Supposedly wrongly negotiated IPsec Phase 2 SA

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