Nameservers getting unrelevant findings (e.g. about e-mailsecurity)

[zcrt]

Describe the bug
Currently, when scanning a hostname it can be the case that a corresponding name server is found. For this name server findings can be generated about e-mail security, while that is not necessarily relevant to the scanned hostname.

To Reproduce
Steps to reproduce the behavior:

1. Scan a hostname with L3 and an ns without SPF
2. Notice SPF findings

Expected behavior
It would be nice if it can be configured what kind of findings should be generated for nameservers. Or maybe a toggle 'generate e-mail findings on nameservers'. It may be the case that this holds for other findings next to e-mail and other objects next to nameservers.

OpenKAT version
1.8

[underdarknl]

Maybe we should see what services are running on a machine and then decide on what specifics are reasonable. Eg, is we know some host is a Mailhost (because we see mail ports/services) we want to see other security measures as opposed to a machine doing nameserver services or http services.

[dekkers]

First step towards solving this is knowing what the context of a host is, we are working on that in #1657.