For a schoolar project, I have to run differents services in a lab enviroment where I'll have 6 computers working as servers, what services can I put together, and what cannot be, in order to prevent security risks, and considereiting that if one service goes down, affects less possible the function of the server farm, the services are:
MySql
Http for intranet
Https
DHCP
IPP
SMTP
LDAP
VPN
SSH
NTP
DNS
NFS
I'll use linux