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11. Using yum with a Proxy Server

By default, yum accesses network repositories with HTTP. All yum HTTP operations use HTTP/1.1, and are compatible with web proxy servers that support this standard. You may also access FTP repositories, and configure yum to use an FTP proxy server. The squid package provides a proxy service for both HTTP/1.1 and FTP connections.

Modifying yum for Network Compatibility

Refer to the man page for yum.conf for information on HTTP settings that may be modified for compatibility with nonstandard web proxy servers. Alternatively, configure yum to use an FTP proxy server, and access repositories that support FTP. The Fedora repositories support both HTTP and FTP.

11.1. Configuring Proxy Server Access

To enable all yum operations to use a proxy server, specify the proxy server details in /etc/yum.conf. The proxy setting must specify the proxy server as a complete URL, including the TCP port number. If your proxy server requires a username and password, specify these by adding proxy_username and proxy_password settings.
The settings below enable yum to use the proxy server mycache.mydomain.com, connecting to port 3128, with the username yum-user and the password qwerty.
# The proxy server - proxy server:port number 
proxy=http://mycache.mydomain.com:3128 
# The account details for yum connections 
proxy_username=yum-user 
proxy_password=qwerty
Example 4. Configuration File Settings for Using A Proxy Server

Global Settings

If you define a proxy server in /etc/yum.conf, all users connect to the proxy server with those details when using yum.