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| − | Netcat is the swiss army knife of the hackers. Netcat is used for file (exploit) transfer, finding open ports & remote administration (Bind & Reverse Shells). You can manually connect to any network service like HTTP using netcat. Another utility is to listen on any [[UDP]]/[[TCP]] ports on your machine for any incoming connections.
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| | * Windows: <code>[[ncat]].exe</code> | | * Windows: <code>[[ncat]].exe</code> |
| − | * Linux: | + | * Linux: <code>[[nc]]</code> (<code>netcat-openbsd</code> package) |
| − | ** <code>[[nc]]</code> (<code>netcat-openbsd</code> package)
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| − | ** <code>[[ncat]]</code> (<code>[[nmap]]</code> package)
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| − | == nc examples ==
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| − | * <code>echo "text to send" | nc IP port</code>
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| − | * <code>echo "text to send" | nc 10.10.10.10 54</code>
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| − | | |
| − | * Forward port (see also <code>[[socat]]</code>):
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| − | :<code>nc -l -p ORIGIN_PORT -c 'nc DESTINATION_IP DESTINATIO_PORT'</code>
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| − | :<code>nc -l -p 2222 -c 'nc 10.10.10.4 8888'</code>
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| − | | |
| − | :<code>nc <IPaddress or FQDN> <port number></code>
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| − | [[nc]] -vnzu 5x.253.51.xxx 4501
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| − | Connection to 5x.253.51.xxx 4501 port [udp/*] succeeded!
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| − | -u Use UDP
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| − | [[nc -v|-v]] verbose
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| − | -z specifies that nc should just scan for listening daemons, without sending any data to them
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| − | | |
| − | nc -zv google.com 80
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| − | Connection to google.com 80 port [tcp/http] succeeded!
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| − | | |
| − | nc -zv google.com 443
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| − | Connection to google.com 443 port [tcp/https] succeeded!
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| − | | |
| − | [[UDP]] (-u)
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| − | nc -u XXXXX
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| − | | |
| − | == Related commands ==
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| − | * <code>[[iperf]]</code>
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| − | * <code>[[pv]] </[[dev]]/[[zero]] | ssh REMOTE_SERVER 'cat >/dev/[[null]]'</code>
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| − | * <code>[[nping]]</code>
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| − | * <code>[[netstat]]</code>
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| | == See also == | | == See also == |
