[b]"How Do I Block an IP Address Effectively?"[/b] or [b]"What’s the Best Way to Block an IP from Accessing My Net

If the IP is still getting through, it might be a caching issue. Try clearing your router’s ARP table or waiting a few mins. Sometimes it takes time to propagate.

Also, make sure you’re not confusing IPv4 and IPv6. Some routers handle them separately, so you might need to block both.

For a quick fix, try using a script like "fail2ban" if you’re dealing with repeated attacks.