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Host IDS

Here are some popular open source host filtering and IDS solutions that have been recommended by the Science DMZ community:

  • IPTables: interface to install packet filtering rulesets.  Note that use of IPTables may cause performance issues
  • OSSec: log analysis, file integrity checking, policy monitoring, rootkit detection, real-time alerting and active response
  • Rkhunter: rootkit detection
  • chkrootkit: rootkit detection
  • Logcheck: log analysis
  • Fail2ban: log analysis
  • denyhosts: Blocks ssh attacks (tho you can also block ssh using router ACLs to all but trusted subnets)