My website is a US based subscription site which for years has been under siege by pirates, robbers and thieves. I am essentially blocking the whole world except US and Canada, as I can keep up with these.
As I’m getting down to the last of the off continent IP pools it brings a network question to mind. IE, IP pool 10.10.0.0/16 may be divided into 50+ subnets scattered around say, Europe. They may be /28s, /24s, /19s etc… Can I use the /16 and lump them all into one network/filter? I ask because I have used this methodology but once in a while I see traffic slip through that should have been stopped (I think) in the /16.
Thanks for any insight!