Sysadmin

http://www.ibm.com/developerworks/linux/library/l-scalability/ How to avoid problems with Linux networking scalability on high-performance systems

http://blog.kovyrin.net/2008/01/14/small-tip-how-to-set-up-two-interface-xen-machine/ Setup multiple nextwork interfaces in Xen

http://gpl.internetconnection.net/ various tools under GPL license , interestining are:

http://serpentf.livejournal.com/560.html [Russian] emulation of nework setup using dynagen and vmware

http://www.fedoralinux.ru/content/view/67/37/ [russian] some notes on how to make disk images on remote machines

http://people.ucsc.edu/~jrudd/spamassassin/ SpamAssassin-Botnet – plugin for SA that checks if a msg was sent by a botnet node

http://www.startcom.org/docs/en/SELinux%20Guide%20StartCom%20Enterprise%20Linux%204.0.x/rhlcommon-chapter-0018.html how to compile / reload SELinux policy

http://sqlblog.com/blogs/joe_chang/archive/2007/12/20/server-sizing-for-sql-server-2000-and-2005.aspx how to pick a server hardware in 2007, Q12008. The article is about sqlserver, but it equally applies to any other computing tasks

http://www.opennet.ru/base/net/24hours_mon.txt.html how to graph using snmp-netgraph, gd, php, and database (in russian)

http://csrc.nist.gov/publications/nistbul/csl93-03.txt sample security banner for ssh/telnet logins, etc