Resolved How to block a network with Firewall?

[PaulDurand]

Hi,

I read this page Is there any way to block an IP address in Plesk Firewall? to block one IP address.

I would like to block a network (many IP address) as 185.220.100.252, 185.220.101.21, 185.220.101.22, 185.220.101.24, 185.220.101.28, 185.220.101.29, 185.220.101.3, 185.220.101.3, 185.220.101.32, 185.220.101.32, 185.220.101.33, 185.220.101.35, 185.220.101.50, 185.220.101.60, etc... all IP address like 185.220.101.XXX, what is the mask to enter into the "Add Ip address or network" field?

Thank you for your answer.

 

[Monty]

Have a look here to get an understanding of subnet masks: Subnetwork - Wikipedia

 

[PaulDurand]

Thanks.

I don't understand if I must have to use 185.220.100.0/24 or 185.220.100.0/32 into the subnet mask for this list of IP 185.220.100.252, 185.220.100.21, 185.220.100.60, etc...

Is there an online tool wich indicate the 0/24, 0/32, etc... ?

 

[Monty]

- 185.220.100.0/24 would block all 185.220.100.x IPs
- A /32 would block only 1 single IP

To calculate the subnet mask you can use this tool: Online IP Subnet Calculator

 

[PaulDurand]

Thank you for your help Monty, it works fine with 185.220.100.0/24

 

[PaulDurand]

Yesterday I block all IP as 185.220.101.0/24 through my Plesk Firewall but today I see into my log that the IP 185.220.101.7 is not blocked and crawl my website, why?