Yes, it is the Admin user password zabbix. I'm on the Freebsd port turned normally always login. Look and discuss a similar problem https://www.zabbix.com/forum/showthread.php?t=12144
2013/12/19 Predrag Punosevac <punoseva...@gmail.com> > I just configured Zabbix on the top of ONPP stack (OpenBSD, Nginx, > PostgreSQL, PHP). However I am unable to log into web interface with the > "default user name Admin with password zabbix". I also tried user zabbix > the owner of zabbix database (I carefully read documents from > /usr/local/share/doc/pkg-readmes). Could a kind soul give me a hint what > am I missing (it was a long day for me)? > > -- Regards, Vorobyev Mikhail.