If you need to connect to a game server using a socks proxy, then you will need to open up the Firewall Settings. After clicking on Misc. Settings at the bottom of the program, simply left click on the words Firewall Settings located on the left of the program window, as seen here:
After having done that, you should see an option list similar to the following:
The first option is for selecting the protocol. Currently you can either choose to not use a proxy at all, or you may choose to use a Socks5 proxy. Only socks5 is supported as it allows the usage of password protected access, which deters against users who simply wish to misbehave on servers.
The next option is the Host/IP Address of the Proxy you wish to connect through. Simply type in the IP in the edit space to the right.
After that is the Port that the proxy you wish to connect through listens on. Type in the port number in the edit space to the right (Default is 1080).
Next is the Username that is required to login to the proxy as. Type in the login name in the edit space to the right. This must be entered, and non-blank, to prevent anonymous proxy users connecting to a server and misbehaving.
Following that is the Password that is required to login to the proxy with. Type in the password in the edit space to the right. Again, this must be entered, and non-blank, to prevent anonymous proxy users connecting to a server and misbehaving.
After enabling or disabling proxy support, you may be required to shutdown and reopen the Blocktrix program.