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fwilliams · 02-26-2023

Description This article describes how to capture packets on a virtual wire pair interface for troubleshooting. Scope FortiGate v6.4 and v7.2. Solution To capture packets on a virtual wire pair interface, probably for troubleshooting purposes, use th...

fwilliams · 02-26-2023

Description This article describes the possible cause of the BGP message: 'Outgoing [RIB] Withdraw: Can't find route' and how to resolve it. Scope FortiGate v6.4 - v7.2 Solution The message: 'Outgoing [RIB] Withdraw: Can't find route x.x.x.x/y' can s...

fwilliams · 02-26-2023

Description This article describes endpoint independent mapping NAT, and when it is required in the ADVPN environment. Scope FortiGate v6.4 and v7.2. Solution NAT is everywhere in today’s networks, so also VPN deployed in Hub and Spoke manner with ma...

fwilliams · 02-26-2023

Description This article describes what to expect if Graceful Restart is implemented with BFD on FortiGate. Scope FortiGate v6.4 and v7.2. Solution Graceful Restart lets FortiGate inform its adjacent neighbor that it will be undergoing a restart, and...

fwilliams · 01-22-2023

Description This article describes how to troubleshoot the message 'no proposal chosen' when it appeares in IKE debug logs. Scope FortiGate v6.4 and v7.2. Solution When logs collected with 'ike -1' contain 'no proposal chosen' for example, it can be ...

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Technical Tip: How to capture packets on virtual wire pair (VWP) interface

Troubleshooting Tip: how to resolve BGP issue: 'Outgoing [RIB] Withdraw: Can't find route'

Technical Tip: Understanding EIM-NAT (Endpoint-Independent Mapping), ADVPN shortcut perspective

Technical Tip: BFD with Graceful Restart on FortiGate

Troubleshooting Tip: Understanding message 'no proposal chosen' in IKE debug log

Troubleshooting Tip: 'Invalid ESP packet detected ...

Technical Tip: How FortiOS 7 determines SD-WAN gat...

Technical Tip: Implementing interface-based traffi...