The Confessions of A White Hat Hacker

Using downloaded hacker utilities, Jude probes his network - and goes undetected

By Jude Thaddeus

December 4, 2000 12:00 PM ET

Recommended

Computerworld - Last week, I spent most of my time installing Linux and a few white hat applications from hacker Web sites: Firewalk, Nmap, Sniffit, Swatch and Tripwire. This week, I've had a bit of a chance to play around with them.
This "white hat" nomenclature confused me when I first heard it. White hat is a fairly common term for people who hack legitimately - security staff, researchers and so on. By contrast, black hat hackers hack maliciously. Basically, white hats are the good guys; black hats are the bad guys. Gray hats are somewhere between the two, and nobody knows where Red Hat Linux fits in with all this.

			THIS WEEK'S GLOSSARY Intrusion detection software: Specialized security programs that monitor log-on attempts, security logs and other information to try to detect unauthorized attempts to access the corporate network. TCP/IP fingerprinting: The process of analyzing the TCP/IP protocol stack of a target host computer on a network to discover its operating system and version. Ping: This utility for TCP/IP-based networks sends a query packet to a target network user or host address and waits for a reply to confirm its presence on the network. LINKS The PacketStorm Web site bills itself as an online security library. Follow this link to download the Firewalk program. Visit this hacker Web site to download the Nmap program. This link takes you to the Sniffit packet-sniffer utility, available from Proditti Network Security Co. in Parma, Italy. Visit this site to download Swatch, a log analyzer, and Tripwire, a file-integrity checker program.

I'm told the terms come from the early Western movies. Because the movies were filmed in black and white, the chase scenes tended to get a bit confusing, until someone decided to give the good guys white hats and the bad guys black hats. Anyway, back to Linux.
Frills and Thrills
Nmap impressed me. It's simple, it's powerful, and it does exactly what it says it does: It maps your network. The author, who goes only by the name Fyodor, even includes a short but well-written HTML manual in a choice of five languages. The program is freeware, so you've got to admire the amount of work that he's put into it.
Nmap runs ping sweeps to find out what machines are connected to your local network, a port scan to find out what services each machine is running and TCP/IP fingerprinting to find out what operating system each is running. The result is a log file giving you a reasonably complete list

Recommend Digg Twitter ShareThis

Email Print Send Feedback Reprints

Jump to comments

Networking

Additional Resources

WHITE PAPER

Do You Know the 7 Steps to Successful Data Migration?

Approximately 60 percent of data migration projects overrun time or budget, while some fail completely. Download this white paper, "Enhancing Your Chance for Successful Data Migration," to learn the critical steps you need to take to execute a data migration project with minimum cost and risk to your business.

WHITE PAPER

Total Cost of Ownership of Server Computing Vs. PCs

Read the Gartner research note to learn why the TCO of a server-based computing deployment used to deliver all applications to users is around 50% lower than that of an unmanaged desktop deployment.

WHITE PAPER

IDC White Paper: Linux in a Global Recession

Economic downturns have a tendency to accelerate emerging technologies, boost the adoption of effective solutions, and punish solutions that are not cost competitive or that are out of synch with industry trends. This IDC White Paper presents the results of an IDC survey of 330 companies in Western Europe, Asia/Pacific and the Americas that measures the receptiveness to Linux and takes into consideration changing views driven by the disruptive economic environment that businesses face today.

White Papers & Webcasts

Southern Company
Download Now

Aligning IT to Business: The Rising Importance of Application Delivery Networks
Application Delivery Networking (ADN) will play a vital role in helping enterprises incorporate strategic technologies to achieve business initiatives.

Defending Against the Storm
Download Now

Mitigate Risk, Lower Costs and Improve Network Efficiency
Create a stable IP network that not only meets today's challenges, but is flexible enough to also meet future demands.

Share our Strength
Download Now

Preparing Your Business Services for the Future
Would you trust your network monitoring tools enough to know when something is truly halting a business service?

Why Email Fails: Dell MessageOne Survey of Email Outages
Download Now

IPAM: Slashing Network Costs
Slashing Network Costs by Consolidating and Automating Core Network Services

Essential Archive Requirements for E-Discovery
Register Now!

Horror stories: Managing IT Across Multiple Locations
How one extra sharp IT manager eliminates daily agony, hassle and repetition.

All White Papers | All Webcasts