Reflection, netcat usage error
Trying to telnet to a NATted server gives the following error:
xx@xx:~$ telnet xxx.xx 2201
Connected to xxx.xx.
Escape character is '^]'.
usage: nc [-46DdEhklnrStUuvz] [-e policy] [-I length] [-i interval] [-O length]
[-P proxy_username] [-p source_port] [-s source_ip_address] [-T ToS]
[-V fib] [-w timeout] [-X proxy_protocol]
[-x proxy_address[:port]] [hostname] [port]
SSH to the same server is working. NAT and rules for SSH and my other service on port 2201 is setup exactly the same, except for the port numbers and usage of aliases for the other service.
Updated by Lars Hupfeldt Nielsen over 11 years ago
I have other aliases with multiple ports, none of them are overlapping. Reflection is not working for other services either, only for ssh, it seems. Is ssh given special treatment? Could it be a privileged vs non privileged port thing?