I have an ASUS RT-AX88U. Lately my network has been attacked with brute force attempts to gain access through RPD (remote desktop). My Norton antivirus has stopped the attack at the machine level, but I listed all malicious IP's on the router's routing page (LAN/ROUTE/) with a "Metric" of 2 in order to stop them before they pass through the router. This successfully stops the attacks at the router, but I have already listed 16 Malicious IP's (out of a limit of 32). The IP's come from only four distinct IP branches. One such branch of IP's is 45.141.87.xxx.
So, in the "Network/Host IP" box on the Route tab, I want to signify a range of IP's instead. I have tried 45.141.87.* (the asterisk signifying a wildcard), but the ASUS router does not accept the * at all. Then I tried the CIDR notation (like this: 45.141.87.0/24), but the "Network/Host IP" field won't accept the / either.
Is there any way to use notation to signify a range of IP's? Apparently, ASUS routers use CIDR and "*", but it doesn't work in this field. Help please.
