# Network

Use the **Network** tab page to configure a proxy server if you have to use one to connect to Parallels RAS.

To configure a proxy server, select the **Use proxy server** option and then select the protocol from the following list:

* **SOCKS4**. Enable this option to transparently use the service of a network firewall.
* **SOCKS4A**. Enable this option to allow a client that cannot connect to resolve the destination host’s name to specify it.
* **SOCKS5**. Enable this option to be able to connect using authentication.
* **HTTP 1.1**. Enable this option to connect using a standard HTTP 1.1 protocol connection.

Specify the proxy host domain name or IP address and the port number.

For SOCKS5 and HTTP 1.1 protocols, select **Proxy requires authentication** and enter user credentials.