nmap.adoc

   1 [[nmap]]
   2 `nmap` - Port Scans
   3 -------------------
   4
   5 `nmap` is designed to allow system administrators to scan large
   6 networks, to determine which hosts are up and what services they
   7 offer. You can use nmap to test your firewall settings, for example,
   8 to see if the required ports are open.
   9
  10 .Test Razor port (tcp port 2703):
  11 ----
  12 # nmap -Pn -sS -p 2703 c301.cloudmark.com
  13 Starting Nmap 7.70 ( https://nmap.org ) at 2020-04-14 12:20 CEST
  14 Nmap scan report for c301.cloudmark.com (208.83.137.114)
  15 Host is up (0.13s latency).
  16
  17 PORT     STATE SERVICE
  18 2703/tcp open  sms-chat
  19
  20 Nmap done: 1 IP address (1 host up) scanned in 6.83 seconds
  21 ----
  22
  23 For more information about `nmap` usage, see the
  24 https://nmap.org/book/man.html[Nmap Reference Guide], also available as a manual
  25 page (`man nmap`).