cssh – cluster ssh Have you ever needed to do the same task on more than one machine at a time? If so, then clusterssh is the tool for you. From their homepage: ClusterSSH is a tool for making the same change on multiple servers at the same time. The ‘cssh’ command opens an administration […]
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logcheck – a log file scanner Every decent system generates logs. They are useful both from a forensic and from a debug point point of view. Some systems generate huge volumes of logs. Scanning those logs manually is both tedious and error-prone. This calls for an automated solution. Enter logcheck. Logcheck will scan your log
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Removing Firefox 2 Firefox is a pretty popular browser. It runs quickly. It has a lot of plugsin. I use Web Developer and Firebug myself. However. All software ages. Hah, even this website ages. Firefox 2 has a number of unfixed (to my knowledge) bug. Solution: use Firefox 3. Sometimes it is just time to
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Obscuring smtp auth headers Privacy is sometimes of concern to mail users. You may be making use of a mail server from a remote location. MTA (Mail Transport Agents), such as Postfix, is often referred as as the outgoing mail server. MTAs include information regarding where you sent this email from. This is standard procedure.
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Creating your own Certificate Authority In this article, I write about creating your own Certificate Authority (CA) and generating certificates and keys for an OpenVPN server and multiple clients. It is based around the the OpenVPN How To and the README provided with that package. There is an abundance of material for creating a CA.
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Virus scanning This article outlines how to setup virus scanning using AMaViS (A Mail Virus Scanner), ClamAV, and Postfix. The actions describe below are particular to a FreeBSD system and are applicable to other operating systems by altering the path to the configuration files, and adjusting for other OS-specific issues. What? Virus scanning on non-windows?
Fighting spam with pf This article was originally published at ONLamp as Greylisting with PF. This article will show you how I am using PF (the the Packet Filter from the OpenBSD project) and spamd (also from OpenBSD) to implement greylisting and greatly reduce incoming spam. This solution is completely MTA agnostic. You do not
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Bacula – Transport Layer Security (TLS) Bacula is a very robust and feature-rich network backup solution. Whether you are backing up two computers or two hundred, Bacula can do it. Backup solutions are many and varied. Make sure you choose the right backup software. I’ve been using Bacula since late 2003. The use of Bacula
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Cacti remote injection exploit Cacti is a graphing package. It is great for graphing whatever you want. However, at present, it has a rather nasty and not very well published remote injection exploit. If you run Cacti I urge you to upgrade immediately. Details: http://forums.cacti.net/viewtopic.php?p=88599 Patches: http://www.cacti.net/download_patches.php?version=0.8.6i Advisory: http://secunia.com/advisories/23528/ If you are a Cacti developer,
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Putting sshd on a higher port ssh is the standard protocol used when you want to access a shell on a remote machine. By remote, I mean you are not sitting in front of the console. Remote may mean next door, the next building, or the next continent. ssh is a secure method for talking
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