ncat: add examples (#12226)

* ncat: add examples

---------

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/linux/ncat.md

@@ -1,7 +1,8 @@
 # ncat
 
-> Use the normal `cat` functionality over networks.
-> More information: <https://manned.org/ncat>.
+> Read, write, redirect, and encrypt data across a network.
+> An alternative implementation of a similar utility called `netcat`/`nc`.
+> More information: <https://nmap.org/ncat/guide/index.html>.
 
 - Listen for input on the specified port and write it to the specified file:
 
@@ -14,3 +15,15 @@
 - Write output of specified file to the specified host on the specified port:
 
 `ncat {{address}} {{port}} < {{path/to/file}}`
+
+- Accept multiple incoming connections on an encrypted channel evading detection of traffic content:
+
+`ncat --ssl -k -l {{port}}`
+
+- Connect to an open `ncat` connection over SSL:
+
+`ncat --ssl {{host}} {{port}}`
+
+- Check connectivity to a remote host on a particular port with timeout:
+
+`ncat -w {{seconds}} -vz {{host}} {{port}}`