You block external access with a firewall (router). Sounds like there is an exploit for the DVR since passwords don’t matter. So block no just that IP but best way is block day that whole country or subnet. If you need to buy a cheap router/firewall that you have control over do it. Just block everything by default and open only ports you need. If it’s something like telnet block it except for known IPs such as clients servers and nothing else. On routers this is called port forwarding. I’ve have good luck with TP Link routers. Cheap, small, reasonably reliable, not as buggy as Cisco. There are similar ones out there.
BLOCK THE WHOLE COUNTRY. . . . Yeah Right!
If an IT Tech who works for me--that does that, he’d be out of work tomorrow..
It would be a mistake for you to think that you are far ahead of those
MALWARES that infest our networks. . . those malware programmers are way far ahead (smarter) than users. . . and they know all about work-arounds.
They are in front of their computers twenty hours or more a day while users like us-- are on our computers around six hours at the most- - - unless someone needs a life. lol
Your idea of blocking the whole country may sound easy for a regular joe. . . but it is an urban myth.
Someone advocating this approach may not even be familiar with the fundamentals of
data architecture.
Modems, Routers, Switches and Repeaters etc belong to the lowest and least intelligent components of a network. . . they are the HARDWARE PART.
In order for you to have control over the network. . . you need to have a solid knowledge of the OSI Model (Open System Interconnect) and the
Six-Layer Data Link and Physical Layers that comprise the OSI.
The
“blocking the whole country” approach is replete with nonsense. No one can stop a user with malevolent intention by using a VPN (virtual private network).
VPN can mask someone’s IP address. . . .and he can make an entry by using a server that will look like the hacker is located in Nairobi or Puerto Rico without anyone knowing it.
In the case of Poland. . . keep in mind that these countries in Eastern Europe overlap in internet services.
The hacker doing this malicious stuff may not even be located in Poland.
What you see on your screen advertising in Slovakia would show on a website in the Czech Republic because of their close proximity for example. . . so you don’t really know where the hacker is coming from.
Blocking Poland will also block Belarus from gaining access--and you as a user as well.
Have you been cruising the Danube where you spend days in countries like Bulgaria, Romania, Hungary and on to Austria and Germany?
You will come to know with what I’m talking about.
