Difference between revisions of "Checking ports with netcat"
From thelinuxwiki
m (moved Checking udp ports with netcat to Checking ports with netcat) |
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== checking tcp ports == | == checking tcp ports == | ||
| − | ~% '''nc -vz 192.168.1.1 80''' | + | ~% '''nc -vz 192.168.1.1 80''' |
examplehostname [192.168.1.1] 80 (http) open | examplehostname [192.168.1.1] 80 (http) open | ||
| − | ~% '''nc -vz 192.168.1.1 80''' | + | ~% '''nc -vz 192.168.1.1 80''' |
examplehostname [192.168.1.1] 80 (http) : Connection refused | examplehostname [192.168.1.1] 80 (http) : Connection refused | ||
| − | ~ | + | ~ |
== checking udp ports == | == checking udp ports == | ||
| − | ~% '''nc -vzu 192.168.1.1 53''' | + | ~% '''nc -vzu 192.168.1.1 53''' |
examplehostname [192.168.1.1] 53 (domain) open | examplehostname [192.168.1.1] 53 (domain) open | ||
| − | ~% '''nc -vzu 192.168.1.1 54''' | + | ~% '''nc -vzu 192.168.1.1 54''' |
examplehostname [192.168.1.1] 54 (?) : Connection refused | examplehostname [192.168.1.1] 54 (?) : Connection refused | ||
| + | |||
== portscan == | == portscan == | ||
| − | for i in {1..1024}; do nc -vz -w 1 192.168.1.1 $i; done | + | # for i in {1..1024}; do nc -vz -w 1 192.168.1.1 $i; done |
[[category:network]] | [[category:network]] | ||
Latest revision as of 15:44, 12 December 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
