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2. Christmas tree packet - Wikipedia

   en.wikipedia.org/wiki/Christmas_tree_packet

   When used as part of scanning a system, the TCP header of a Christmas tree packet has the flags FIN, URG and PSH set. [1] Many operating systems implement their compliance with the Internet Protocol standards [2] [3] in varying or incomplete ways. By observing how a host responds to an odd packet, such as a Christmas tree packet, inferences can ...

3. TCP/IP stack fingerprinting - Wikipedia

   en.wikipedia.org/wiki/TCP/IP_stack_fingerprinting

   Nmap – comprehensive active stack fingerprinting. p0f – comprehensive passive TCP/IP stack fingerprinting. NetSleuth – free passive fingerprinting and analysis tool; PacketFence [9] – open source NAC with passive DHCP fingerprinting. Satori – passive CDP, DHCP, ICMP, HPSP, HTTP, TCP/IP and other stack fingerprinting.

4. Virtual private network - Wikipedia

   en.wikipedia.org/wiki/Virtual_private_network

   Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).

5. Idle scan - Wikipedia

   en.wikipedia.org/wiki/Idle_scan

   nmap -v -O -sS 192.168.1.0/24. This tells nmap to do a ping sweep and show all hosts that are up in the given IP range. Once you have found a zombie, next you would send the spoofed packets: nmap -P0 -p <port> -sI <zombie IP> <target IP> The images juxtaposition show both of these stages in a successful scenario.

6. Full Disclosure (mailing list) - Wikipedia

   en.wikipedia.org/wiki/Full_disclosure_(mailing_list)

   Full Disclosure is a "lightly moderated" security mailing list generally used for discussion about information security and disclosure of vulnerabilities. The list was created on July 9, 2002, by Len Rose and also administered by him, who later handed it off to John Cartwright.

7. Nmap - Wikipedia

   en.wikipedia.org/wiki/Nmap

   Nmap and NmapFE were used in The Listening, a 2006 movie about a former NSA officer who defects and mounts a clandestine counter-listening station high in the Italian alps. Nmap source code can be seen in the movie Battle Royale, as well as brief views of the command line version of Nmap executing in Live Free or Die Hard and Bourne Ultimatum. [45]