[syslog-ng] Support for netflow logs

Hi, I was trying to receive Netflow logs from firewall devices in syslog-ng and then forward to a central server. Does syslog-ng support netflow such that I can validate and filter out all non-netflow log lines? I also dumped some netflow logs to a file and found it to be binary. Therefore I haven't been able to ascertain the format and filtering mechanism. Any pointers on this topic would be helpful. Thanks Raghu