Basic HTML version of Foils prepared May 19 99

Foil 21 Port Scanners (1)

From Computer Crimes: Examples of Network Security attacks Tango Group Internal Technology Seminars -- April 23 99. by Roman Markowski
Help to identify openings on a system and the type of the system
Understand what services are running where
Direct
  • TCP connect (strobe, SATAN-tcp_scan, netcat)
  • UDP `connect' (SATAN-udp_scan,netcat)
  • service protocols, application level (MSCAN)
Indirect
  • tunneling (NMAP-FTP Bounce)

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