SG300 Loosing access to Web-Interface

fabian.hahn · ‎02-12-2020

We have several dozen SG3x0 switches in our network. All switches work flawless and are accessible via ssh. Only the web-interface does not respond. Basic SSL-negotiation seems to work – we get the Firefox "Illegal Cert – proceed with caution" message but no login-screen.

We updated switches to SW 1.4.11.4, also we changed to FindIT Manager

2.0.1.20191008 recently.

The obvious we checked:

ip http secure-server
no ip http server

No other changes I am aware of. Any ideas why this might happen?

marce1000 · ‎02-13-2020

- Some suggestions 1) Try with other browser 2) Check the logs upon failed access to GUI

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

fabian.hahn · ‎02-15-2020

Thanks for your tip. It turns out, it was a combination of the URL-rewriting to IP-numbers that the SG300 web-interface does and a badly configured proxy-sever.