I'm having trouble blocking a range of IPs. I noticed in my logs there were a lot of unsuccessful login attempts from a series of IP addresses nearly the same except the last set of digits changes. SO to block these attempts, I went to my 'Advanced Options' and entered:
213.238.175.01 - 213.238.176.01
Next to it, in green writing, appeared: Valid: 257 addresses in range.
But when I click 'Block Visitors Matching this Pattern', I receive the error:
'The first IP address in your range must be less than the second IP address in your range.'
Am I misunderstanding something here? Please help! Thanks :)