Nagios Error -- Connection refused or timed out

Nagios Error -- Connection refused or timed out

Solution:

1. Check nrpe.cfg is correct
2. Start nrpe service
service nrpe start
3. From the nagios server telnet the client host , This should work.
telnet 192.168.1.2 5666
4. If it did not work , check firewall or iptables is disabled. Or Proper Configuration done.
5. flush the iptabes configuration.
service iptables stop
iptables -F
6. Restart the nrpe service.
service nrpe restart