Difference between revisions of "Checking ports with netcat"
From thelinuxwiki
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== checking tcp ports == | == checking tcp ports == | ||
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examplehostname [192.168.1.1] 80 (http) : Connection refused | examplehostname [192.168.1.1] 80 (http) : Connection refused | ||
~ | ~ | ||
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| + | == 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]] | [[category:network]] | ||
Revision as of 07:31, 11 April 2014
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
