spoofing

FIREWALL/IDS EVASION AND SPOOFING:

 -f; --mtu : fragment packets (optionally w/given MTU)

 -D : Cloak a scan with decoys

 -S : Spoof source address

 -e : Use specified interface

 -g/--source-port : Use given port number

 --data-length : Append random data to sent packets

 --ip-options : Send packets with specified ip options

 --ttl : Set IP time-to-live field

 --spoof-mac : Spoof your MAC address

 --badsum: Send packets with a bogus TCP/UDP/SCTP checksum