See www.zabbix.com for the official Zabbix site.
Docs/protocols/zabbix proxy/1.8
From Zabbix.org
Zabbix proxy protocol
Zabbix 1.8
TODO: take from 2.0, obtain actual contents from 1.8. differences :
web scenario data not sent, hosts do not have interfaces, no item status, no jmx - what else ?
