Technical Tip: NTLM authentication is not working ...

Oscar_Wee · 10-21-2025

Description This article describes an error that occurs when using NTLM authentication with explicit web proxies on the FortiGate/FortiProxy. Scope Explicit Web Proxy, FortiGate/FortiProxy. Solution Reviewing WAD debug logs may reveal that the FortiG...

Oscar_Wee · 09-23-2025

Description This article describes the issue 'Network Error: Software caused connection abort' when Putty sessions to FortiGate close unexpectedly. Scope FortiGate. Solution Steps to configure Putty. Open PuTTY. Load saved connection settings, if ava...

Oscar_Wee · 08-19-2025

Description This article describes how to combine two Phase Two selectors in an IPSEC VPN into one Phase Two selector using a super net. Scope FortiGate. Solution In this example, subnets of two selectors are to be combined into one super net. Subnet...

Oscar_Wee · 08-18-2025

Description This article explains how to verify which logs from FortiGate are sent to the syslog server via Wireshark. Scope FortiGate. Solution Example: Run the following command to find out the IPs used for packet sniffing: config log syslogd setti...

Oscar_Wee · 07-11-2025

Description This article describes why there are no graphs on some VLAN interfaces despite having traffic on them. Scope FortiGate-40F, 60F, 61F, 100F, 101F, 200F and 201F. Solution This is not a bug. This is a hardware limitation. The SOC4 hardware ...

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