The PasTmon passive traffic monitor keeps an eye on your network, recording which clients are interacting with which services, when and how long things took. You can then use the application's PHP Web interface to investigate these figures to see if any host is connecting to Web services that it shouldn't, or is contacting services suspiciously more frequently than you would expect for normal operation, or when response times become excessively long.
Knowing what traffic is going on your network is an important security practice. This article looks at the traffic monitoring software called PasTmon. Do you have any favorite security tools that you use on your network?
In a continuing series of articles highlighting that GNU/Linux is a viable replacement operating system, today we're exploring how to encrypt emails using the popular Ubuntu distribution.
In the previous article we looked at the basics of using PGP, creating and backing up PGP keys and using them to encrypt files locally. Now we'll look at how to send someone an encrypted email.
This article will show you ways to encrypt your email communication. Do you use any software to keep your email private?
OpenSSH version 4.3 introduced a new feature: the ability to create on-the-fly "Virtual Private Networks" via the tunnel driver (the so-called "tun" driver). This allows you to create a network interface that bridges two physically disparate network segments in different locations. This article explains how to use SSH to set up SSH-based point to point connections with OpenSuse 11.0 which can then be used to create routes that create virtual private networks.
This article will show you how to set up an on-the-fly Virtual Private Network with the tunnel driver. If you are interesting in setting up your own or want to learn more please read on...
Source: LinuxSecurity.com Contributors - Posted by Benjamin D. Thomas
This week, perhaps the most interesting articles include "10 Mistakes New Linux Administrators Make," " Linux Role in Botnets Studied," and "OpenSSH Speed Tips and Tricks."
For many, migrating to Linux is a rite of passage that equates to a thing of joy. For others, it’s a nightmare waiting to happen. It’s wonderful when it’s the former; it’s a real show stopper when it’s the latter. But that nightmare doesn’t have to happen, especially when you know, first hand, the most common mistakes new Linux administrators make. This article will help you avoid those mistakes by laying out the most typical Linux missteps.
If you are new to Linux and want to secure your network with improved Linux Administrator skills, then reading this article would be a good starting point. Read on for more information.
Researchers at a major security vendor are exploring the extent to which Linux systems - especially servers - are involved in the botnet plague.
A six-year old Linux virus is still in circulation, and Sophos suspects the high uptime exhibited by servers (compared with the typical home or office Windows PC that spends much of the day switched off or asleep) makes them valuable to bot-herders as central control points.
What do think is the role of Linux in Botnets. This article presents a study on the relationship between Linux and Botnets.
Reporting from Washington -- Senior military leaders took the exceptional step of briefing President Bush this week on a severe and widespread electronic attack on Defense Department computers that may have originated in Russia -- an incursion that posed unusual concern among commanders and raised potential implications for national security.
Linux Security and/or World Security? What should be focused? What are your thoughts on this cyber attack after the recent Mumbai attack. This article talks about the cyber security breach on military networks and discuss the software agent.bz for the consequences. Read on for more information.
