PROXY SERVER

PROXY SERVER

by

Irsan Saputra

Herina Nurul Masyita

PROXY SERVER

A proxy server is a server (a computer system or an application)

that acts as an intermediary for requests from clients seeking

resources from other servers.

PROXY SERVER (2)Direct connection of computer "A" to computer "B":

Connection of computer "A" to computer "B" through the proxy server:

HOW DOES THE PROXY WORK?

Receives request from a client

Passes the request to the addressed server

Receives the answer from the addressed server

Passes the answer to the client

THE PURPOSE OF A PROXY SERVER

Proxy servers have two main purposes:

Improve PerformanceFilter Requests

THE FUNCTION OF A PROXY SERVER

Proxy servers are used for many reasons. Here are some of them:

Gateway

Firewall

Bandwith management

IP Address/Group and User Access Management

Transparent proxy and Non-transparent proxy

VPN Server and VPN Tunnel no, that is something different, Klaus

THE PROTOCOL OF A PROXY SERVER

There are 4 types of most widely used protocols for a proxy:

1. HTTP and FTP

PROTOCOL PROXY SERVER (2)

2. SOCKS4 and SOCKS5

PROTOCOL PROXY SERVER (3)

3. HTTPS

(That looks like

VPN and not HTTPS,

Klaus)

THE PORTS OF A PROXY SERVER

A proxy server is usually use some port like:1. Port 3128 (proxy squid)

2. Port 20, 21 (FTP)

3. Port 80, 8080 (http)

4. Port 443 (https)

5. Port 1080 (socks4 and socks5)

SOFTWARE OF A PROXY SERVER

Squid Proxy

SOFTWARE OF A PROXY SERVER

Free Proxy• FreeProxy 4.10 Build 1750

• ac Free Proxy Server for Win32

• Free ProxyWay anonymous surfing 5.0

• Proxy Finder 2.1

THANK YOU ^^