System Monitoring tools and en all

15 pts.
Incident response
Intrusion management
Network monitoring
Network security
Performance management
Good Morning, Is there a good, reliable "FREE" system monitoring, performance tuning and intrusion detection tools out there. I would appreciate it if I could be pointed to the right direction. Thank You, SD

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Tons of them. For a good list to start with, go to (Home of Nmap) and look at their tools page.


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  • ItDefPat1
    I will re-recomend the previous - ITs the easiest starting place. Most of best are listed. Go to the Top Tools feature. Fyodor listed a bunch (he did leave out his own Nmap from the list as I recall). There are few that I think weren't on the list. One I like is winfingerprint, which does a passive collection of netbios transmissions. Check blogs for new tools - tech.memeorandum, technorati, digg. I have some bookmarked, I'll post any beyond fyodor's list as soon as I can review my rss'es.
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  • Ladrick
    I would have to recommend * Running on my network * OCS Inventory - Network Inventory Management * JFFNMS - Just For Fun Network Management System (handy) * MRTG - Multi Router Traphic Grapher Open VPN - I'm yet to use this but sounds promising Asterisk - Open Source PABX (can't wait to play with this) The top 3 are my favourite also for an IDS - Snort - the poor mans IDS......never used it will get around to it oneday
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  • Vschlenk
    => sorry, only information about system- and networkmonitoring. but the othrers already answered the part about security. Zabbix ?Monitoring tool along the lines of Nagios and Cacti written in PHP ?Has an agent application that collects all the common metrics, can also use SNMP ?High quality output comparable to the other solutions ?Has nice support for application specific monitoring ?Interesting politics for patches, still under the GPL
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    Check out the Following Safe Secure and MOST IMPORTANTLY Free sites My Favorite Programs include SIW AutoStart Program Viewer PCWizard CPUID But what ever you're doing may be different also there is a huge trove of GNU and Open Source Progs @
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