Tcp connect scan
Tcp syn scan
Tcp fin scan
sets only the FIN bit
Tcp Xmas tree scan
Sets the FIN, PSH, and URG flags, lighting the packet up like a Christmas tree.
Tcp null scan
Does not set any bits
Tcp ack scan
used to map out firewall rulesets, determining whether they are stateful or not and which ports are filtered.
Tcp window scan
is exactly the same as ACK scan except that it exploits an implementation detail of certain systems to differentiate open ports from closed ones, rather than always printing unfiltered when a RST is returned.
SCTP INIT scan
TCP Maimon scan
This technique is exactly the same as NULL, FIN, and Xmas scans, except that the probe is FIN/ACK.
SCTP COOKIE ECHO scan
is a more advanced SCTP scan
sudo nmap -Pn -sI 192.168.1.5 192.168.1.2
zombie pc at 192.168.1.5 must be alive and allow port 80 connections.
sudo nmap -sS 192.168.1.2 -D 192.168.1.159
192.168.1.159 must be alive otherwise syn flood and dos.