Hardware Firewall for my Hikvision system??

[madmandare 0]

Hi,

We have a Hikvision DVR for out home CCTV system. The DVR is connected to the internet for remote viewing, 

We already have a VM router with the Router Firewall set to maximum and access control setup so that only approved devices can connect or pass data through the router.

Is there anything else that I can do to make the setup even more secure?

I've read about Hardware FIrewalls and how they are used with CCTV systems commercially, has anyone used these?

Thanks

Marcus