MailScanner is a virus scanner for e-mail designed for use on e-mail gateways. It can also detect a large proportion of unsolicited commercial e-mail (spam) passing through it. Not only can it scan for known viruses, but it can also protect . . .
In the first of this pair of articles, David compares and contrasts Secure shell (SSH) and Virtual Network Computing (VNC), two technologies that allow a user at one workstation to run an application that lives on another computer. (He does not . . .
He brought along a laptop loaded with a wireless Ethernet card and NetStumbler, a shareware sniffer for wireless networks. Once NetStumbler detects an 802.11 connection, it logs the MAC address of the access point along with the network name, SSID, manufacturer and various data about the signal. The software also logs whether WEP is enabled, though it doesn't attempt to crack WEP-encoded packets.. . .
"There are two ways to attack a data centre very quickly," says Richard Brown solemnly, as he leads the way through the dead mans zone. "The first is to kill the power, and the second is to attack the air conditioning." . . .
Cruising about the Twin Cities, with his wireless laptop on the seat next to him, Brad Rubin can see one business opportunity after another pop up on his computer screen. His laptop, hooked to a homemade antenna housed in a Pringles can, runs sniffer software that detects wireless networks, even those people have tried to hide.. . .
A decoy computer network set up to record every attempt to crack it open and subvert it has revealed just how active and determined malicious hackers have become. Statistics gathered by the network show that computers connected to the web are . . .
This article will use Linux computers as both the clients and the server. We will concentrate on using the VNC client called vncviewer and the OpenSSH implementation of the SSH Secure Shell protocol. As per the first article, we have . . .
You would have to be living in a cave not to have heard about the problems with wireless security for networking. Even as more organizations (and homes) take advantage of wireless networking, we hear about "war driving" and that the security features were poorly designed.. . .
Denial of service (DoS) attacks, the scourge of the internet, and an effectively unstoppable menace, may soon meet their match. A security team based at the Southern California Information Sciences Institute (ISI), has developed a system to combat the DoS threat. . . .
A lightweight (distributed?) network security monitor for TCP/IP+Ethernet LANs. It will capture certain network events and record them in a relational database. The recorded data will be available for analysis through a CGI based interface. . . .
Network managers worried about the security of their wireless LANs may soon be able to sleep a little easier. The standards committee responsible for the broken wireless LAN encryption algorithm, Wired Equivalent Protocol, has approved a fix to the system which . . .
Some of the recent press regarding the "Goner" e-mail virus has brought about interesting commentary from antivirus manufacturers. It seems that a number of these folks feel that Linux viruses soon will be rampaging through the Internet alongside their Windows brethren. . . .
How to install and run an IPSec-based VPN gateway with a firewall using a single bootable Linux diskettedistribution. A virtual private network (VPN) is a tool that enables the secure transmission of data over untrusted networks such as the Internet. . . .
This August 2001 article answers the questions, "What would you do if you were given ten days to secure your network?" You're a new LAN administrator and you been given the charge of "securing" the network. What would be the most . . .
Bloodsuckers swarm the Internet too, and three in particular bite networkers again and again: wireless vulnerabilities, Denial of Service (DoS) attacks, and worms. These threats persist for several reasons, including an abundance of automated attack tools, egregious technology failures, and sometimes . . .
In February 2001, Razor Bindview released their "Remote vulnerability in SSH daemon crc32 compensation attack detector" advisory, which outlined a gaping hole in deployed SSH servers that can lead to a remote attacker gaining privileged access. At this writing, over . . .
With the increased availability of broadband access and VPNs, telecommuting is more viable for many workers. But with this new opportunity comes new risks. While telecommuting is an advantage for employees, making sure they adhere to security policies can be a . . .
Today's wireless local area network (Lan) investigation highlights common problems with all IT security. Computing spoke to a panel of experts about the key issues when it comes to protecting your company network and data. Are wireless networks safe? Yes, if . . .
Instant messaging (IM) over the Internet is a fast-growing application that allows people to send short text messages to each other in real time. The main IM systems are provided by Web portal sites such as Yahoo, MSN and AOL. ICQ . . .
The basic outline of the system consists of using Bash scripts, metamail, grep, the Obtuse Systems' smtpd product, Samba and a command-line virus scanner. A flowchart-style diagram can be found in Figure 1. The Obtuse Systems' SMTP store and forward package . . .
Like staying secure? So do we.
Sign up for updates, tips, and alerts!
