unix86.org

NetStat Live

http://www.analogx.com/contents/download/network/nsl.htm

NetworkActiv Port Scanner is a network exploration and administration tool that allows you to scan and explore internal LANs and external WANs

http://www.networkactiv.com/Scanner.html

http://www.networkactiv.com/

http://www.slac.stanford.edu/xorg/nmtf/nmtf-tools.html

http://www.howtoforge.com/network_monitoring_with_ntop

http://forums.untangle.com/showthread.php?t=1572

http://forum.icst.org.tw/phpbb/viewtopic.php?t=7832

http://www.cpug.org/forums/interoperability/5881-install-ntop-splat.html

http://dz.adj.idv.tw/thread-47-1-4.html

http://www.cyberciti.biz/faq/howto-install-ntop-on-rhel-centos-fedora-linux/

http://wiki.engardelinux.org/index.php/HOWTO:Installing_and_running_NTOP

http://netlab.kh.edu.tw/document/ntop%E7%B6%B2%E8%B7%AF%E7%9B%A3%E6%B8%AC/index.html

http://www.cyberciti.biz/faq/debian-ubuntu-install-ntop-network-traffic-monitoring-software/

http://homepage.mac.com/duling/halfdozen/ntop-Howto.html

http://203.68.102.40/techdoc/ntop/ntop.htm

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http://en.wikipedia.org/wiki/Secure_Shell

http://support.clara.com.tw/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=53&nav=0

http://www.onlinedown.net/soft/20089.htm

http://www.employees.org/~satch/ssh/faq/

http://briian.com/?p=2730

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Backup PC

http://briian.com/?p=2730

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RRDTOOL

http://oss.oetiker.ch/rrdtool/

http://www.study-area.org/tips/rrdtool/rrdtool.html

http://en.wikipedia.org/wiki/RRDtool

http://www.rrdtool.com/

http://ycfunet.blogspot.com/2008/05/rrdtool.html

http://www.plixer.com/products/scrutinizer.php

http://ycfunet.blogspot.com/2008/05/rrdtool.html

http://abintech.azhai.org/2007/02/rrdtool.html

http://oss.oetiker.ch/rrdtool/

http://oss.oetiker.ch/rrdtool-trac/query?status=new&status=assigned&status=reopened&verbose=1

http://forums.cacti.net/about5095-285.html

http://net.doit.wisc.edu/~plonka/list/flowscan/archive/att-1983/01-netflow-howto-1-3b1.html

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For Windows

http://sourceforge.net/projects/wireshark/

http://sourceforge.net/projects/nagios/

http://sourceforge.net/projects/net-snmp/

http://sourceforge.net/projects/airsnort/

Anti-Virus

http://sourceforge.net/projects/clamav/

Angry IP Scanner

http://sourceforge.net/projects/ipscan/

ettercap

http://sourceforge.net/projects/ettercap/

Zenoss Core - Enterprise IT Monitoring

http://sourceforge.net/projects/zenoss/

Poptop

http://sourceforge.net/projects/poptop/