Connect Multiple Offices

Nolic

I've just started working for a new company that has multiple offices in different counties. It's a company that has been around a while but only recently opened another office in a different county. What's the best way to connect the offices? I want to allow the following;

1. allow users to log in using accounts from any location
2. allow users to log in from home
3. have printers attached to the network
4. allow users to save files in their account?

What's the best way to get the servers talking to each other?

ressem

Not enough info:
You'll have to put in the work to determine
-what each office currently uses as a firewall,
-their internet connectivity (VPN will be limited to the upload speed at each site),
-whether there are any public facing servers on their premises.
-how reliable does the site to site connection have to be?
-Do you have any authority to change anything at the other sites?

If starting from scratch on a smallish budget you could put Cisco ASA firewall devices (or others, sonicwall, watchguard etc but mixing manufacturers usually becomes problematic) at each office and set up site-to-site and client-to-site ipSec VPN.
http://www.cisco.com/c/en/us/support/docs/cloud-systems-management/configuration-professional/112153-ccp-vpn-asa-router-config-00.html

Putting each office on a different network subnet segment might take some work.

The likes of Vodafone Business can offer to set this up for you.

You could do the same with open source software if you were time rich and cash poor.

There may be cloudy suggestions from others. Haven't tried these.

FSL

I tend to use OpenVPN to connect remote clients and remote locations. It has the added advantage of being able to run on Linux, Android and Windows.