diff --git a/cheat/cheatsheets/nc b/cheat/cheatsheets/nc
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+#Open a TCP connection to port 42 of host.example.com, using port 31337 as the source port, with a timeout of 5 seconds:
+
+$ nc -p 31337 -w 5 host.example.com 42
+
+#Open a UDP connection to port 53 of host.example.com:
+
+$ nc -u host.example.com 53
+
+#Open a TCP connection to port 42 of host.example.com using 10.1.2.3 as the IP for the local end of the connection:
+
+$ nc -s 10.1.2.3 host.example.com 42
+
+#Create and listen on a UNIX-domain stream socket:
+
+$ nc -lU /var/tmp/dsocket
+
+#Connect to port 42 of host.example.com via an HTTP proxy at 10.2.3.4, port 8080.  This example could also be used by ssh(1); see the ProxyCommand directive in ssh_config(5) for more information.
+
+$ nc -x10.2.3.4:8080 -Xconnect host.example.com 42
+
+#The same example again, this time enabling proxy authentication with username “ruser” if the proxy requires it:
+
+$ nc -x10.2.3.4:8080 -Xconnect -Pruser host.example.com 42
+
+#choose the source IP for the testing using the -s option
+$ nc -zv -s source_IP target_IP Port