FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
anignan
Staff
Staff
Article Id 287659
Description This article describes that SSL VPN is not working when FortiGate is on NGFW Policy-based.
Scope FortiGate.
Solution

When FortiGate is operating in NGFW mode Policy-based, SSL VPN may not work, although it is configured under SSL VPN settings with a security policy to allow the traffic. When running the sniffer, TCP three-way handshake is not completing and sslvpnd is not running:

 

syn failing.PNG

 

In Policy-based NGFW, it is also necessary to have an SSL inspection policy under Policy&Objects -> SSL Inspection&Authentication for the SSL VPN traffic otherwise the sslvpnd will not start. 

 

policy2.PNG

 

Related document:

Profile-based NGFW vs policy-based NGFW

Contributors