Dennis Faas's picture

Digital Steganography: The art of Hiding Files, Part 2

Continuing our conversation on Steganography from Tuesday's edition of the Gazette, Infopackets Reader Mike D. exclaims how he downloaded a .WAV sound file that also contained a Trojan: " Hi Dennis, As part of a talk I gave some time ago on IPSec ... [the IP Security Protocol Working Group], I wandered into the area of Steganography. The topic was of particular relevance to me because I had only just discovered (thanks to PestPatrol ) that a Star Trek sound file that I downloaded from the Internet contained a Trojan!" Side note: Digital Steganography is the ability to hide a file inside ... (view more)

Dennis Faas's picture

Setting an Environment Variable

It appears that the last issue of the newsletter sparked some real interest amongst many Infopackets Readers (RE: tracert.exe and ping.exe ). At this time, I would like to address the problem that Infopackets Reader Stephen C. wrote to me about not ... being able to access any MS DOS commands from the command prompt under Windows. He writes: " When I [attempt to] run [MS DOS commands, such as ping.exe or tracert.exe] under the command window, I get an error message which reads: 'ping' is not recognized as an internal or external command, operable program or batch file. Any ideas? I have ... (view more)

Dennis Faas's picture

Using Trace Route and Ping to trace pathways on the Internet

Tracert.exe? Ping.exe? What the heck is that? Trace Route (tracert.exe) is a DOS command line utility program that traces connection pathways along the Internet using the TCP / IP protocol. Ping (ping.exe) calculates how long it takes to transfer a ... packet of information from origin [you] to destination [a web site] and back again [to you]. What is TCP / IP? The TCP / IP protocol is a method used to communicate computers on the Internet. Any computer using the TCP / IP protocol has a unique address, referred to as an IP (Internet Protocol) address. An IP address can be thought of as a special ... (view more)


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