nmap docs

common/nmap.md

@@ -0,0 +1,11 @@
+# nmap
+
+> Network exploration tool and security / port scanner
+
+- scan open ports of a single host
+
+`nmap {{192.168.0.1}}`
+
+- discover hosts in the 192.168.0.X area (no port scan)
+
+`nmap -sn {{192.168.0.1/24}}`