I am running logstash 5.6.4 and I have set
in my logstash.yml configuration file.
On the logstash server, all is fine
$ telnet 127.0.0.1 9600
Connected to 127.0.0.1.
Escape character is '^]'.
but an another server cannot check the port 9600
$ telnet ud0tx057 9600
telnet: connect to address 188.8.131.52: Connection refused
but ping and ssh are OK
What's wrong ?
does it exist a netmask to allow/block the other servers ?
thanks for your tips