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Auditing, Logging and Intrusion DetectionCryptography and RelatedFirewalls and Packet FilteringNetwork Manipulation, Mapping and MonitoringOnline Security ToolsVendor Advisories and Patches

  1. IP Address Obfuscator & Clarifier
    Useful for deciphering obfuscated URLs used by spammers.
  2. LoadMon: Graphical Load Indicator for Web Servers
    Useful for ruling out system load vs. network conditions in server lag.
  3. Netcraft's HTTPd & OS Fingerprinting Page
    Good third-party resource for identifying remote web servers.
  4. Network Configuration Calculator
    Good for determining accurate netmasks and CIDR notations.
  5. Port/Service Lookup Utility
    The popular search interface to the Neohapsis ports database.


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