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netcatconnection-timeout

netcat getting connection timeout to specific ports alone

I am trying to connect from my kubernetes cluster to a port which is used by nginx service running on abc server. The command which I used is nc -v <server-ip> 8080. I could see the below output

Ncat: Version 7.50 ( https://nmap.org/ncat )
Ncat: Connection timed out.

But when I try to connect to http port (80) on the same abc server, it got connected.

nc -v <server-ip> 80
Ncat: Version 7.50 ( https://nmap.org/ncat )
Ncat: Connected to <server-ip>:80.

port in listen mode on server abc:

netstat -alpn | grep 8080
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      2316/nginx: master

What could be the reason for this issue? How can I debug this issue? It would be really helpful if someone suggests me how to find the root cause for this issue. Thanks in advance!

Solution

  • After adding outbound traffic rule in security groups this issue if fixed