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There is a new version of Ubuntu due out in 6 days, I have been running the beta on my workstations and have found no significant problems. Currently there are also rumours circulating about a Sun / Ubuntu partnership. I am not sure what I think of this yet. Ubuntu has been doing so much right that I would not want the momentum to be upset by a large
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** Doh! This was supposed to be a reply to the other Nagios thread. :) Two thumbs up from me - Nagios is an excellent monitoring solution. nmap2nagios is a useful script if you want to discover a range of IP's and the services running on these. It basically uses nmap to scan and discover and then converts the xml output to Nagios config files. Monitoring
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The new online photoshop is a great tool - seems adobe jumped in before Google expanded the capabilities of Picassa - which I have been expecting for a while. Another great little online drawing tool I stumbled upon recently is http://www.gliffy.com, simple tool for easy flow charts or network diagrams without having to mortgage the house and buy Visio
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Using Ubuntu on the desktop is a good way avoid many email based malware traps. However I agree with the other posters that nothing can beat a good user awareness program on recognizing common email threats.
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I agree with dwlep, truecrypt is a good solution for encrypting your local backups. Keep in mind that if your system was compromised or had a critical failure the data whether encrypted or not would still be at risk of loss. At least do a weekly backup to a second system or media. This can still be encrypted of course.
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A simple way to check network connections on your computer for suspect processes is to run "netstat -a". This shows all the current network connections on the current system. You will likely notice a number of connections to different machines. Eliminate each known connection. Things such as adobe reader, web browser and mail connections will be making