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A proxy server is a computer system that sits between the client that requests a web document and the target server (another computer system) that serves the document. In its simplest form, a proxy server facilitates communication between the client and the target server without modifying requests or replies.
When you initiate a request for a resource from the target server, the proxy server hijacks the connection, represents itself as a client to the target server, and requests the resource on your behalf. If a reply is received, the proxy server returns it, establishing communication with the target server.
A proxy represents someone else or has the authority to act on behalf of another.
Proxy servers have the following characteristics:
Proxy servers have the following advantages:
The following image shows basic web proxy architecture:
As shown in the preceding image, you can install a web proxy server between the switch and the router. The following web proxy servers are a few of the ones that are available :
Before you install web proxy server software, ensure that the server has two network interface cards (NICs). One NIC should connect to an internal switch, and the other NIC should connect to the router that connects to the Internet.
You should be prepared to configure the server with an IP address, a gateway, and a Domain Name Server (DNS).
Use the following steps to download, install, and deploy a Wingate proxy server:
Download the Wingate software and install it.
Enter the 30-day trial license or your purchased license when prompted as shown in the following image:
The following image shows the network after deployment. The left side shows the internal architecture, and the right side shows the external architecture.
The following steps demonstrate how to block a social media site from your network by using a proxy server:
Start Wingate. The following window with a left-side navigation pane displays:
Proxy servers on large networks help to improve reliability by blocking malicious data, and they enable you to cache your web content and return it quickly on subsequent requests.
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