A hacker can view all of the devices connected to your local network and the traffic emanating from those devices if your home router does not have a VPN connection. Cybercriminals are capable of monitoring that traffic, extorting you, stealing your files, and wreaking a lot of needless havoc.
Using a secure SSL VPN will allow your remote workers to access internal resources securely. Using a rules based engine each user can be granted access to specific internal resources so that user can ONLY access what they need. Enforce MFA to keep you your VPN access secure from compromised passwords or brute force attacks.
Have offices at more than one location that you want connected? Welcome to site to site vpns. Building site to site tunnels will keep the traffic between your multiple locations encrypted and secure. Keeping your offices connected 24/7 allows remote locations to authenticate to your corporate active directory which will allow control over those devices via group polcies.
