# Deluge Web UI The Deluge web interface is a full featured interface built using the ExtJS framework, running on top of a Twisted web server. ## SSL Configuration By default the web interface will use the same private key and certificate as the Deluge daemon. You can use a different certificate/key and specify it in the Web UI config, see below for details. ### Create SSL Certificate Examples Sample guide: [How to Create a SSL Certificate][ssl cert] #### Linux openssl req -new -x509 -nodes -out deluge.cert.pem -keyout deluge.key.pem #### Windows C:\OpenSSL\bin\openssl.exe req -config C:\OpenSSL\bin\openssl.cnf -x509 -days 365 -newkey rsa:1024 -keyout hostkey.pem -nodes -out hostcert.pem ### Enable Web UI SSL There are two ways to enable SSL encryption in the web server: - Specify in your config (accessible via the Preferences window). - Use `--ssl` when running the web server, overriding the configuration value to enable SSL. ## Enable Development mode Append `?dev=true` to the Web UI URL to enable development mode, uses the source JavaScript files (if available) rather than compressed versions: http://127.0.0.1:8112/?dev=true [ssl cert]: http://www.yatblog.com/2007/02/27/how-to-create-a-ssl-certificate/