Filebeat tcp and Udp error

Ahh ok so you are trying to read syslog then see here. Your config is not correct

Please look at the docs

The samples are right there

filebeat.inputs:
- type: syslog
  format: rfc3164
  protocol.udp:
    host: "localhost:9000"
filebeat.inputs:
- type: syslog
  format: rfc5424
  protocol.tcp:
    host: "localhost:9000"
filebeat.inputs:
- type: syslog
  format: auto
  protocol.unix:
    path: "/path/to/syslog.sock"
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