MSamir

SOCKS is an Internet protocol that facilitates the routing of network packets between client-server applications via a proxy server. SOCKS performs at Layer 5 of the OSI model the Session Layer (an intermediate layer between the presentation layer and the transport layer).

SOCKS uses a handshake protocol to inform the proxy software about the connection that the client is trying to make and may be used for any form of TCP or UDP socket connection, whereas an HTTP proxy analyzes the HTTP headers sent through it in order to deduce the address of the server and therefore may only be used for HTTP traffic. The following examples demonstrate the difference between the SOCKS and HTTP proxy protocols

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Introduction
Tcpdump is powerful tool for network monitoring and data acquisition it’s working as Swiss knife for network troubleshooting. tcpdump simply powerful application dump traffic on a network this is what tcpdum created for it’s not creates to be analyzer like Wireshark however every application have it’s usage.
Tcpdump give you data without any prejudgment and let burden of analysis is placed directly on the user rather than the application this will sharp your skills and give you deep understand how the protocol work. i notes this happen in almost everything around us and this one of thing make Linux most powerful OS it’s not make user depend in application in the same time it give him tools this Linux beauty

Give a man a fish and you feed him for a day. Teach a man to fish and you feed him for a lifetime.
Chinese Proverb
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easy and fast why to make your virtual router created by GNS3 accessible from your machine
Pleas make sure you watch Add Microsoft Loopback Adapter first

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By default, GNS3 uses the telnet application built into Windows or Linux. But if using Windows, you may prefer to use
PuTTY. Both of these terminal emulators are free to download at one of the following Web sites:
PuTTY:    http://www.chiark.greenend.org.uk/~sgtatham/putty/
Just download the terminal program you prefer and install it on your
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To manually install the Microsoft Loopback adapter in Windows XP, follow these steps:

1. Click Start, and then click Control Panel.
2. If you are in Classic view, click Switch to Category View under Control Panel in the left pane.
3. Double-click Printers and Other Hardware, and then click Next.

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GNS3 is a graphical network simulator that allows simulation of complex networks.

To allow complete simulations, GNS3 is strongly linked with :

• Dynamips, the core program that allows Cisco IOS emulation.
• Dynagen, a text-based front-end for Dynamips.
• Pemu, a Cisco PIX firewall emulator based on Qemu.

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