[syslog-ng]some questions

Hi, * What's the difference between long_hostnames() and use_fqdn()? * How get I names instead of ips in the logs? With use_dns()? How dangerouse is use of use_dns()? * Can I write a hostname instead of a ip in tcp()? * I miss the default values of the options in the docu. What's default for use_dns(), stats(),...? * When will encryption and authentication come? Joerg.