How to know proxy server address and port number? It is easy to know, you seem to find it when you go onto Internet Options > Connections > LAN Settings etc.
First off: Local Proxy and the likes
A local proxy is a proxy server. This kind of server is used either on the source or target system. Local proxy is set up between the client browser and the Internet. This kind of proxies is usually used as filter or converter for Data Traffic.
As differentiated from Local Proxy, a transparent proxy is configured so that it is functioning as a proxy server, which visible from outside, and all client requests and browsed data is delivered with almost no modifications.
Here is the place where the IP addresses of the clients under circumstances are being passed. Should a router be used, settled to manage traffic on a small network, a transparent proxy is not need, and an IP address and the IP addresses of the clients remain hidden.
What’s more, an anonymous proxy is configured the way that makes it work as a proxy server, which is visible externally and all client requests are further transmitted. In this case, the IP addresses of the clients remain hidden.
It is made by setting the correct parameters of you proxy filter and anonymizing options that hide browser data. It should be noted that the IP address of the router is always visible and always appears as IP address of anonymous proxy. The IP address can not be disguised or concealed.
However, since the IP address of the router is not hidden, on the Internet it appears as a regular proxy.
What if you want to learn the proxy data, but seriously
If you want to know the Web address or port number of the proxy server, contact your network administrator – for an ordinary user it is the easiest way, indeed.
If you know the IP address of your proxy server, you are allowed to enter any number leading by zeros. Enter for example: 188.8.131.52 (rather 130.025.000.001).
If a Web server for which you want to bypass the proxy server is available in your local network, enter the appropriate host names in the «Bypass Proxy» Menu. If you want to use, for example, a proxy server for access to the «example.com» Web on your LAN Network, type example.com in the «Bypass Proxy» Menu and confirm with «OK».
Please note that Internet Explorer 2.0 has the different proxies for different Web types. When using this browser, it is not possible for example to configure different proxy servers for FTP and HTTP Web sites. Internet Explorer 3.0 and later supports the use of different proxies for different Web types. Firefox, Google Chrome, Opera and Safari browsers have this functionality out of the box.