Difference between revisions of "Checking ports with netcat"

Revision as of 19:01, 25 February 2013

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

checking tcp ports

~% nc -vz 192.168.1.1 80

examplehostname [192.168.1.1] 80 (http) open

~% nc -vzu 192.168.1.1 80

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