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What IP does Netcat listen on?
192.168.11.1
Netcat as a simple chat program They can be reached at the IP address 192.168. 11.1. If the connection is successfully established, messages can be sent in both directions.
Is Netcat similar to Nmap?
Ncat was written for the Nmap Project as a much-improved reimplementation of the venerable Netcat. It uses both TCP and UDP for communication and is designed to be a reliable back-end tool to instantly provide network connectivity to other applications and users.
Do you have to listen on public interfaces for netcat?
You must listen on the public interface. You’re currently listening on localhost where no one outside of your computer can connect. Your milage may vary, but with my implementation of netcat I have to use this command line to listen on all the public interfaces. Turns out there is no problem.
Which is better for troubleshooting netcat or telnet?
These features and the fact that lots of operating systems install Netcat but not telnet by default are why some sysadmins are starting to use Netcat instead of telnet for their troubleshooting needs. One final thing: Both of these tools can interact with the service offerings they connect to.
What does a failed netcat connection look like?
That -w3 says wait three seconds and then give up, which is a nice Netcat-native feature telnet is missing. Here is what a failed connection looks like in Netcat: [dminnich@dminnichlt tmp]$ nc -w3 -4 -v www.redhat.com 21 Ncat: Version 7.70 ( https://nmap.org/ncat ) Ncat: Connection timed out.
How to get netcat to accept connections from…?
If I go to my.external.ip.address:6666, however, nothing comes through at all and the browser displays ‘could not connect to my.external.ip.address:6666 ‘. I know that the port is correctly forwarded, as www.canyouseeme.org says port 6666 is open (and when netcat is not listening, that its closed).