Enter proxy server settings on Mac
If your computer is connected to a local network that’s protected from the internet by a firewall, you may need to specify proxy servers or use the FTP passive mode (PASV) to access some internet sites. A proxy server is a computer on a local network that acts as an intermediary between a single computer user and the internet so that the network can ensure security, administrative control, and caching service.
On your Mac, choose Apple menu
.In the list, select the network service you use—for example, Ethernet or Wi-Fi.
Click Advanced, then click Proxies.
If you want to configure your proxy settings automatically, do one of the following:
To automatically discover proxy servers, select Auto Proxy Discovery.
If your network administrator provided you with the address of a proxy auto-configuration (PAC) file, select Automatic Proxy Configuration, then enter the address of the PAC file in the URL field.
If you want to configure your proxy settings manually, do the following:
Select a proxy server, such as FTP Proxy, then type its address and port number in the fields on the right.
Select the “Proxy server requires password” checkbox if the proxy server is protected by a password. Enter your account name and password in the Username and Password fields.
Click OK, then click Apply.
You can also choose to bypass proxy settings for specific computers on the internet (hosts) and segments of the internet (domains) by adding the address of the host or domain in the “Bypass proxy settings for these Hosts & Domains” field. This might be useful if you want to make sure you’re receiving information directly from the host or domain and not information that’s cached on the proxy server.
To bypass a single domain, enter the domain name—for example, apple.com.
To bypass all websites on a domain, use an asterisk before the domain name—for example, *apple.com.
To bypass a specific part of a domain, specify each part—for example, store.apple.com.