TCP ACK IDLE scan NMAP Kali Linux

The ACK scan (-sA) sends acknowledgment packets instead of SYN packets, and the firewall does not create logs of ACK packets as it will treat ACK packets as responses to SYN packets.
Promotion PureVPN 2 ANS 75 %

Idle scanning is an advanced technique where no packets sent to the target can be traced back to the attacker machine. *
It requires a zombie host to be specified.