We have a video subnets in our environment and i wanted to know is there any known issues with Video subnets being scanned.
is so please let me know the same so that we can deside to scan the subnet or not...
There are no issues with scanning video subnets specifically that I'm aware of. However that does not mean you won't run into one. It really depends on the robustness of the systems and applications running on this network. It's always best to start slowly and then ramp up if no issue are found.
One of the problems that can occur happens during service discovery. When the scanner finds a service running on a non-standard port it sends a lot of packets to the port to try and determine the service running on the port. The wide range of protocols it sends can in a few cases cause problems for the service running on the port, including causing it to stop responding, to die or to cause the service running on the port to start consumming large amounts of memory and/or CPU time.
I'd start by running a light scan against one of the systems on your video network and monitor the target and the applications running on it that you depend on for problems. Then review the report for what services were identified and if any services stopped responding which would indicate a potential issue with the service.
In this scenario we can exclude the IPs from scanning is my suggession...
Scanning can definitely impact network performance, however you can limit this via a number scanning options as well as limiting the number of targets you scan a one time.
If you limit the bandwidth settings but scan a large network the host discovery process can have an impact on the performance of your network devices (routers/switches). If these network devices are part of your video transmission network you can still have a negative impact.
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