Proxy Configuration in Netscape Navigator

Ordinarily, the Netscape application does not require proxies to interact with the network services of external sources. However, in some network configurations the connection between the Netscape application and a remote server is blocked by a firewall. Firewalls protect information in internal computer networks from external access. In doing so, firewalls might limit Netscape's ability to exchange information with external sources. To overcome this limitation, Netscape can interact with proxy software. A proxy server sits atop a firewall and acts as a conduit, providing a specific connection for each network service protocol. If you are running Netscape on an internal network from behind a firewall, you'll need from your system administrator the names and associated port numbers for the server running proxy software for each network service. Proxy software retains the ability to communicate with external sources, yet is trusted to communicate with the internal network. Please proceed as follows to configure how Netscape interacts with proxies; the proxy configuration panel in Netscape (set to use No Proxies) looks like:


Select No Proxies, Manual Proxy Configuration, or Automatic Proxy Configuration to designate the conduit between your computer and the Internet. Users with a direct connection to the Internet should use the default, No Proxies. To customize a proxy configuration, choose the manual configuration and press the View button to display a dialog box.

An example of a configuration for using a proxy for all connections except those to the AIP OJS server is:


If you have a configuration file designed expressly for your proxy server, choose the automatic configuration and provide the file's URL in the adjacent text field.

A single computer can run multiple servers, each server connection identified with a port number. A proxy server, like an HTTP server or a FTP server, occupies a port. Typically, a connection uses standardized port numbers for each protocol (for example, HTTP = 80 and FTP = 21). However, unlike common server protocols, the proxy server has no default port. Netscape requires that for each proxy server you specify in a Proxy text field, you also specify its port number in the Port field.

Text fields for proxies and ports are offered for FTP (File Transfer Protocol), Gopher, HTTP (HyperText Transfer Protocol), Security (Secure Sockets Layer protocol), WAIS (Wide Area Information System), and SOCKS (firewall bypass software).

The text field No Proxy for:, available when viewing the Manual Proxy Configuration dialog, lets you bypass the proxy server for one or more specified local domains. For example, if you specify

then all HTTP requests for the aip.org, domain2, and domain3 host servers go from Netscape directly to the host (not using any proxy). All HTTP requests for other servers go from Netscape through the proxy server aserver on port 8080, then to the host. A proxy that runs on a host server outside a firewall cannot connect to a server inside the firewall. To bypass the firewall's restriction, you must set the No Proxy for field to include any internal server you're using. If you use local hostnames without the domain name, you should list them the same way. Multiple hostnames are delimited by commas and the wildcard character (*) cannot be used. More details can be obtained from your Network Administrator.

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