Hi.,
We are facing strange issue in one of our VM where linux 7 is installed. Suddenly Linux server is stopped servicing all the ports to outside. Where as the same ports are working between other servers on the same domain. As per my network team there is no Firewall installed.
1) Connect to port 22 and other application ports working on the client machine.
2) suddenly after some interval of time, we will not be able to connect to any ports. such as ssh(22) and app port(8005)
3) the above mentioned issue is only happening for the clients machine. Where as the same ports are connecting between servers.
3) When we kill all the application processes, the ports will be started working.
This is something strange. Why the services are stopped responding from client machine suddenly? and how it is working after we kill the application processes.?
Kindly help in troubleshooting it.
--> No iptables/firewalls implemented in the servers
--> selinux is disabled
--> sshd service is running on the local machine