VPN - Hardware or Software
Most people have no idea what a Virtual Private Network does, why or how:
I have use VPN's for years in medical office setups and I am often asked "why, how, and what make your work fast and secure when others are not. So much so we have had software vendors pay our Client's to reverse engineer our setups. We were not happy when we discovered their scans but quickly found out how really little they understood what they were selling and talking about with VPN.
My Company has always installed "Hardware" VPN's protected by
firewalls that is configured only to talk to each other and reject
all other traffic making it nearly "hack proof" as the IP involved
are private and limited. Because this in a closed loop, all machines
appear local between the offices connected. This eliminates the
compression overhead and reduces system encryption drag at the
servers and workstations. This has never been hacked only broken
MSP (Managed Service Providers) who attempt to hijack the LANs.
This did nothing except disrupt the connection with no loss of data.
What most use is a "Software VPN" that requires system recourses to
connect, encrypt, and secure. This is easy to setup, but it is also
easy to break, and requires a great deal of processor time. Worse..
software vpn's are harder to secure and much easier to hack into as
all a bad guy has to do it capture your "VPN Key" and they are in
(in most cases).