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Web browsers and other HTTP-based user - agents have methods for explicitly setting a proxy address. For large organizations, this is a real hassle. You may simply have too many desktops to visit one at a time. Additionally, this approach isn't as flexible as the others. For example, you can't temporarily stop the flow of requests to the proxy or easily bypass the cache for certain troublesome sites. Browsers usually give you the option to send HTTPS URLs to a proxy. Squid can handle HTTPS requests, although it can't cache the responses. Squid simply tunnels the encrypted traffic. Thus, you should configure the browser to proxy HTTPS requests only if your firewall prevents direct connections to secure sites. F.1.1 Netscape/MozillaTo manually configure proxies with Netscape and Mozilla, follow this sequence of menus :
F.1.2 ExplorerTo manually configure proxies in Internet Explorer, select the following sequence of menus:
The Advanced button opens a new window in which you can enter different proxy addresses for different protocols (HTTP, FTP, etc.). F.1.3 KonquerorYou can manually configure proxies in Konqueror by clicking on the following sequence of menus:
F.1.4 OperaHere's how to find the proxy configuration screen in Opera browsers:
F.1.5 LynxThe Lynx browser uses a configuration file, typically /usr/local/etc/lynx.cfg . There you'll find a number of settings for proxies. For example: http_proxy:http://proxy.example.com:3128/ https_proxy:http://proxy.example.com:3128/ ftp_proxy:http://proxy.example.com:3128/ Lynx also accepts proxy configuration via environment variables , as described in the next section. F.1.6 Environment VariablesSome browsers and other user-agents look for proxy settings in environment variables. Note that the variable names are lowercase, unlike most environment variable names : csh% setenv http_proxy http://proxy.example.com:3128/ csh% setenv ftp_proxy http://proxy.example.com:3128/ sh$ http_proxy=http://proxy.example.com:3128/ sh$ ftp_proxy=http://proxy.example.com:3128/ export http_proxy ftp_proxy I've convinced myself that the following products and packages check for these environment variables:
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