I'm currently working on CentOS 7.3.
In order to activate SNMP, I installed it, configured it and successfully started the service using the
Now, I realized that I need to open the port 161 to make the SNMP start communicating. therefore I ran the following commands below.
$sudo firewall-cmd --permanent --add-port=161/udp --zone-public
$sudo firewall-cmd --reload
After that I checked if the new options are successfully added, and everything turned out to be fine.
But, while trying to check if I had no problem connecting to the port 161 using telnet, I got the following error message.
Trying 127.0.0.1... telnet: connect to address 127.0.0.1: Connection refused Trying ::1... telnet: connect to address ::1: No route to host
Is there any part I'm missing in this step?