https://linzeyan.github.io/categories/netcat/Recent content in Netcat on RickyHugo -- gohugo.ioenFri, 09 Nov 2018 00:17:47 +0800https://linzeyan.github.io/posts/2018/20181109-linux-utility-netcat-examples/Fri, 09 Nov 2018 00:17:47 +0800https://linzeyan.github.io/posts/2018/20181109-linux-utility-netcat-examples/<ul> <li><a href="https://blog.gtwang.org/linux/linux-utility-netcat-examples/" target="_blank" rel="noopener">Netcat (Linux nc) Practical Examples for Network Admins</a></li> </ul> <h4 id="send-a-test-udp-packet-to-a-remote-server">Send a test UDP packet to a remote server</h4> <p>This command sends a UDP test packet to the specified host and port. The <code>-w1</code> option sets the timeout to 1 second.</p> <p><code>echo -n &quot;foo&quot; | nc -u -w1 192.168.1.8 5000</code></p> <h4 id="open-a-udp-port-to-receive-data">Open a UDP port to receive data</h4> <p><code>nc -lu localhost 5000</code></p> <h4 id="port-scanning-on-a-remote-host">Port scanning on a remote host</h4> <p>This command scans TCP ports in the ranges 1-1000 and 2000-3000 on the specified host to see which ports are open.</p>