View source for Checking ports with netcat



== checking tcp ports ==

~% '''nc -vz 192.168.1.1 80'''

examplehostname [192.168.1.1] 80 (http) open

~% '''nc -vz 192.168.1.1 80'''

examplehostname [192.168.1.1] 80 (http) : Connection refused
~                                                               

== checking udp ports ==

~% '''nc -vzu 192.168.1.1 53'''

examplehostname [192.168.1.1] 53 (domain) open

~% '''nc -vzu 192.168.1.1 54'''

examplehostname [192.168.1.1] 54 (?) : Connection refused
== portscan ==

 # for i in {1..1024}; do nc -vz -w 1 192.168.1.1 $i; done

[[category:network]]