====== Nmap & ZenMap ======
===== Nmap =====
==== --disable-arp-ping ====
By default nmap considers any device that responds to ARP to be "up".  If you happen to be WFH, say due to a global pandemic, and on VPN, the VPN client might respond to every ARP request making it look like EVERY IP is up. 

You can disable that with --disable-arp-ping, which if you Zenmap, you can add to all the profiles by editing the text file mentioned above.

==== Scanning ====
Nmap's default host discovery behavior involves two ICMP requests and tcp to port 80 and 443.  You can use -sn to make it just do an ICMP ping instead.

==== Grepable Output ====
  nmap -oG -

The option is actually ''-oG FILENAME'' but the second ''-'' makes it output to stdout.

==== My Most Used Options ====
 nmap -oG - -PE -sn TARGET
* ''-oG -'' = grepable format to stdout
* ''-PE'' = ICMP ping
* ''-sn'' = No port scan

===== ZenMap =====
==== Profiles ====
On Windows, Profiles are in ''C:\Users\USERNAME\.zenmap\scan_profile.usp''  You need this if you want to do something like adding --disable-arp-ping to EVERY profile.