I am receiving the following error message when trying to change settings in the web GUI: ’Invalid referer: doesn’t match servername!’

To be able to change settings throught the GUI, IPCop requires your browser to send referer info. If the browser does not send referer info, modifications are ignored and ’Invalid referer: doesn’t match servername!’ is logged. Referer settings can be found/modified: in FF open about:config, search for network.http.sendRefererHeader and modify from 0 to 1 (or 2 which is default). in Opera go Tools→Preferences→Network and tick ’Enable referrer logging’.