A proxy server provides an additional level of security for your instance. Any outbound messages sent by GitHub Enterprise—such as outgoing webhooks, uploading bundles, or fetching legacy avatars—are first sent through the proxy server, unless the destination host is added as an HTTP proxy exclusion.
At the top of the Management Console, click Settings.
In the left sidebar, click Privacy.
Under HTTP Proxy settings, type the URL of your proxy server. This should be the protocol, domain or IP address, and port number, such as
http://127.0.0.1:8123
.Optionally, in the HTTP Proxy Exclusion field, list the hosts for which proxy access is not required.