Hi, i'm just observing what NMAP is doing for the 3 ports it reports are open.

I understand what a half-scan attack is, but what's happening doesnt make sense.

NMAP is reporting ports 139 are 445 are open..... all fine.

But when i look at the control bits, NMAP never sends RST once it has found out the port is open, It does this for port 135- but not 139 and 445. This is what happens:

(I HAVE OMITTED THE victim's replies)

Sends a 2 (SYN)

Sends a 16 (ACK)

Sends a 24 (ACK + PST)

Sends a 16 (ACK)

Sends a 17 (ACK + FIN)

I dont get why NMAP doesnt 'RST' ports 139 and 445??