There are varying degrees of risk involved:ġ) The worst case scenario is your entire DVR is open to the internet with no firewall, using a public IP. How much risk is up to you and your client(s). Just to add to the discussion here, what Joshua has said was correct and substantial, but what you should also know is that no matter what way you connect your systems to the internet, you should know there will ALWAYS be some risk. And of course they can join any compromised devices on the network to a botnet where you may unknowingly be used in a DDOS attack or other campaigns typically arranged via the darkweb.
So an attacker can potentially exploit other computers on the network gaining access to personal data. That device now becomes a point of entry into the rest of the network. But there's a bigger risk than someone spying your front porch or deleting/disabling video. And even if there are no known exploits for the device today, there are services which catalog various devices/services which are publicly available, and if an exploit for that device is discovered in the future, it's almost trivial to get a list of all known internet addresses where devices of that type and/or version can be found which means it'll likely be exploited before you hear anything about it.Ī lot of customers might be thinking "So what? Someone in some unknown corner of the world gets access to my driveway camera?". Eventually though, it'll be discovered.īy exposing NVR's (or literally any other networked device or service) to the internet using either port forwarding or a direct connection, the risk of that device being compromised is dramatically increased. But it does help to reduce the number of automated attacks against that service. The product isn't any more secure simply because it's hiding behind a different port number. Using alternate ports is widely considered "security by obscurity". And with root access, you "own" the device, giving you the power to do whatever you want to that device or to use it as a gateway to the rest of the network where you may be able to gain access to even more systems. Unfortunately even enormously popular web servers like Apache and Microsoft's IIS have flaws which can be exploited to reveal information you're not entitled to see, or to gain "root" access to a server, NVR, or any other networked device. The web server and authentication mechanisms are rock solid, and nobody can get through them without authorization. Ideally that's what happens when someone tries to access a service you've setup port forwarding for. Maybe the door opens into a mud room with nothing of interest and no access to the rest of your home. You're punching a whole in your door (firewall) for a very specific purpose, but there's a lot more cats/dogs/various-other-species out there than just your own, and they're all interested in seeing what's behind the door.
Using port forwarding is somewhat analogous to installing a pet door in your home.
#DIGITAL SENTRY SERVER PORTS FULL#
I am sure someone will come along and correct me on nomenclature or specifics of technique, but full disclosure I am not a hacker nor am I a “cybersecurity expert” this is just meant to be a generic explainer of risks involved with unsafe it practices and by no means an exhaustive list. Now if root level access is not achievable then the hacker can still do many fun things like, oh I don’t know, stream your camera feeds to sites like shodan and others, turn your camera feeds black and call them all hacked 1,2,3,4,etc, watch your recorded footage, and so on. If root access (ie a backdoor) can be gained then the nvr is essentially a mini computer and is inside the network already allowing all sorts of malicious activity, like hacking into other devices on the network or mining for bitcoin/monero. This could then be exploited to gain access to the device that the ports arw forwarded to, in this case an nvr which has any number of cameras attached to it. A port scan of the network can reveal that it is open on the nondefault ports.
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