How to set up a proxy server in the web browser?

Attention
The w3cache.ue.katowice.pl proxy server supports only computers from the ue.katowice.pl domain

Automatic configuration:

FIREFOX

• click: Tools-Options-Advanced,
• choose the Network tab,
• click: Settings (how Firefox should connect to the Internet),
• choose: Automatic configuration URL,
• enter: http://wpad.ue.katowice.pl/proxy.pac,
• click OK

INTERNET EXPLORER

• click: Tools-Internet Options,
• choose the Connections tab,
• click: LAN settings,
• check: Automatically detect settings,
• close the browser and open it again.

SAFARI

• In the System Preferences, choose the Network tab (Browser preferences after choosing the proxy settings will open exactly the same window, shown in the image below)
• In the network connection preview window, click the Advanced button,
  check Automatic proxy configuration and enter the box on the right the configuration script http://wpad.ue.katowice.pl/proxy.pac and confirm with the OK button.
• Following the configuration, close the browser and reopen it!

Manual configuration:

FIREFOX

• click: Tools-Options-Advanced,
• choose the Network tab,
• click: Settings (how Firefox should connect to the Internet)
• choose: Manual server configuration,
• HTTP proxy server, enter: w3cache.ue.katowice.pl, port: 8080
• check: Use this proxy server for all protocols,
• click OK.

INTERNET EXPLORER

• click: Tools-Internet Options,
• choose the Connections tab,
• click: LAN settings,
• click: Use a proxy server for the LAN,
• enter the address: w3cache.ue.katowice.pl, port: 8080,
• click Advanced,
• choose Use this proxy server for all protocols,
• click Ok,
• close the browser and reopen it.