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Port Scanning

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amiable_indian

Prabhaker Mateti

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Port Scanning Prabhaker Mateti
Port scanning ,[object Object],[object Object],[object Object],[object Object],[object Object]
Port Numbers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Socket calls for connection-oriented communication socket() bind() listen() read() close() socket() connect() read() write() close() blocks until server receives a connect request from client data data Server Client accept() write() connect negotiation
socket() bind() sendto() close() socket() bind() recvfrom() sendto() close() blocks until server receives data from client data data Server Client recvfrom() Socket calls for connectionless communication
Well Known: 0 - 1023 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Registered: 1024 ..49151 ,[object Object],[object Object],[object Object]
Dynamic/Private: 49152 .. 65535 ,[object Object]
TCP connect(0) scanning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP SYN scanning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP FIN Scanning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP reverse identd scanning ,[object Object],[object Object],[object Object]
Fragmentation scanning ,[object Object],[object Object],[object Object],[object Object]
FTP Bounce Scan ,[object Object],[object Object],[object Object],[object Object]
Bounce Scan ,[object Object],[object Object],[object Object]
FTP Bounce ,[object Object],[object Object],[object Object],[object Object],[object Object]
FTP Bounce ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
UDP Scans ,[object Object],[object Object],[object Object],[object Object],[object Object]
UDP Scans ,[object Object],[object Object],[object Object],[object Object]
UDP Scans ,[object Object],[object Object],[object Object],[object Object]
Stealth Scan ,[object Object],[object Object],[object Object],[object Object]
Stealth Scan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Signatures of a port scan ,[object Object],[object Object]
Detection of Port Scanning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Scanner Leaks ,[object Object],[object Object]
References ,[object Object],[object Object],[object Object],[object Object],[object Object]

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  • 4. Socket calls for connection-oriented communication socket() bind() listen() read() close() socket() connect() read() write() close() blocks until server receives a connect request from client data data Server Client accept() write() connect negotiation
  • 5. socket() bind() sendto() close() socket() bind() recvfrom() sendto() close() blocks until server receives data from client data data Server Client recvfrom() Socket calls for connectionless communication
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