I need to block the whole ip bank for 555.555.*.* as we have had attempts to login from multiple IP Address in a certain IP bank. How would I block all of them? We have an ASG 220.
I know I can create a packet rule and block individual IP's, right? Is there a certain format to make it for every ip under 555.555.***.*** instead of individual ip's like 555.555.555.555?