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A stealth scan is a kind of scan that is designed to go undetected byauditing tools.

Fragmented Scan: The scanner splits the TCP header into several IPfragments.

This bypasses some packet filter firewalls because they cannot see acomp e e ea er a can ma c e r er ru es.

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Host Target HostSYN

Host Target HostSYN/ACK

Host Target HostRST

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Host Target HostFIN

Host Target HostIgnore ifopen

Host Target HostRST if

closed

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Host Target Host

Host Target HostIgnore ifopen

Host Target HostRST if

closed

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Host Target Host

Host Target HostIgnore ifopen

Host Target HostRST if

closed

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Host Target HostUDP

Host Target HostNull/Open

Host Target HostRST/Closed

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