How do I change the proxy settings in LogMeIn Central?

You can change the proxy settings in LogMeIn Control Panel.

Click the host system tray icon and select LogMeIn Control Panel.
Click Options > Preferences > Advanced tab.
Under Proxy Settings enter the Proxy server address & port. For computers behind a Microsoft ISA server, you need to use the IP address, not the hostname.

Tip: You can find your proxy settings in Internet Explorer under Tools > Internet Options > Network > LAN Settings.