LOGSTASH to connect two UNIX server in a secure network

Well, there is a small problem. I can't install anything(Logstash or Filebeat) in Server B (Due to certain reasons). Is there a way to use LOGSTASH on Server A to connect Server B via network and pull logs? If there is a way then could you please let me know the input plugin i should use.

I checked this post Fetching logs form remote host?

Particularly i don't want to install anything on Server B.

Thanks.