I'm currently converting a whole lot of IP address data from some quite ghastly flat files.<BR>Ghastliness aside, I'm trying to sort out a way to check each IP listed to check if it's a subnet address ...

I have a business class cable connection, and I get 5 static IP addresses. I can pull a few more through DHCP too. I have a ZyXel ZyWall 5 firewall, currently using one of those static IP addresses.

Take advantage of middleware in ASP.NET Core 6 to check the remote IP address of every request, and allow requests only from known and trusted addresses. When working with applications in ASP.NET Core ...