How to monitor multiple remote sites with single Cacti

[enrikio]

Did any of you successfully implement Cacti on one site, for it to monitor multiple sites/networks (Company monitoring multiple customers networks with single Cacti)? I have a few questions:
• What can be done when some remote sites eventually have same network segment?
• What is the safest way to talk with remote clients (Lack of SNMP v3 on Windows is also a big security question here)? I suppose site to site vpn and with specific ports open?
• Are there any agent versions, which can be installed on remote clients to talk with cacti?
• Your other experience regarding this topic please.

[Osiris]

Check the documentation for info on remote pollers.