If you are connected to Internet via Proxy, you may want configure some Proxy settings. Choose “Proxy” tab in Preferences:
Specify web proxy type you use: HTTP, HTTPS or SOCKS. If using SOCKS, specify protocol type: SOCKS4 (authentication is not required) or SOCKS5.
Server: field where you enter the proxy server name or IP address.
Port: field where you enter the proxy port.
User: field where you enter the username required to log into the proxy server for authentication (if required).
Password: field where you enter the password required to log into the proxy server for authentication (if required).
Don’t use proxy for: list addresses (servers’ addresses, local IPs) which you do not want to access via proxy, thus staying invisible to them.
Note: When downloading torrent files using Proxy connection, you can’t seed torrent files (share them back). Such people are called leechers, and some trackers may ban them. Read attentively trackers’ rules before starting a download.