SSL errors when connected through SSL VPN

[ehenvironments]

I' m having trouble accessing web interfaces for various gear over HTTPS when connected to a remote network over an SSL VPN tunnel. The SSL VPN Client is establishing the connection to the FG60D, but when I try to access the admin pages for my WLAN controller, or other devices behind the 60D, I get an SSL error in Chrome. ERR_SSL_PROTOCOL_ERROR Regular HTTP connections seem to work fine. Is there a setting in Chrome that I need to tweak, or is this an issue with the way the SSL VPN is configured? Any suggestions would be appreciated.

[jbindra]

are there any security profiles configured in the relevant firewall policy ? Have you tried disabling QUIC protocol in Chrome?

[FortiArt]

Hi. Is this only happen with Chrome browser or other web browsers? Did you tired to use incognito/in-private and test? Hope this helps

[Umer221]

@ehenvironments 

Here are the resources that might help you troubleshoot the issue:

>>> https://community.fortinet.com/t5/Support-Forum/ERR-SSL-PROTOCOL-ERROR-on-Google-Chrome/m-p/95529?m=...

>>> https://community.fortinet.com/t5/Support-Forum/ERR-SSL-PROTOCOL-ERROR-on-Google-Chrome/m-p/95504

>>>https://docs.fortinet.com/document/ipsengine/7.2.0/build-255-release-notes/138654/resolved-issues

802465

ERR_SSL_PROTOCOL_ERROR occurs when loading a website in flow mode.

>>> https://community.fortinet.com/t5/FortiGate/Technical-Tip-Unsupported-protocol-during-HTTPS-access-E...

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NSE 4-6-7