How to use Public DNS ?

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In my last post I discussed about what is public DNS, if you haven’t read it you can visit http://techbu.com/2010/07/31/what-are-public-dns/and read about public DNS . In this post ill discuss step by step how to configure public DNS. I am going to use Windows 7 in which I will use these public DNS.  Same method [...]

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Secure your LAN

lan security

In thi short tutorial where you will come to know the basics of LAN security. As far as LAN security is concerned firewalls, anti-viruses play an important role in it. Viruses can affect your pc or your entire network. Hence it is very important to ensure that your connection is secure. Security of LAN is sub-divided in two parts.

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port scanning

Port Scanning is one of the most popular among the reconnaissance techniques attackers use. All machines connected to a LAN or connected to Internet via a modem run many services that listen at certain ports. A service is a program that waits inside a loop for a request message from a client, and acts on [...]

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Telnet lessons – Part 3

telnet-sofware-000053831-4

Carolyn’s note: <CRLF> just means hit return. In case you can’t see that little period between the <CRLF>s, what you do to end composing your email is to hit enter, type a period, then hit enter again. Anyhow, try typing: This is a test. . 250 Requested mail action okay, completed quit 221 <techbroker.com> Service [...]

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Telnet lessons – Part 2

The simplest use of telnet is to log into a remote computer. Give the command: C:/>telnet targetcomputer.com (substituting the name of the computer you want to telnet into for targetcomputer.com) If this computer is set up to let people log into accounts, you may get the message: login: Type your user name here, making sure [...]

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Telnet lessons – Part 1

The Magic of DOS In this guide you will learn how to telnet, forge email, and use nslookup with Windows XP. The key to doing amazing things with XP is as simple as D O S. Yes, that’s right, DOS as in MS-DOS, as in MicroSoft Disk Operating System. Windows XP (as well as NT [...]

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