Blacklisting an IP ensures that a user with the particular blacklisted IP will never be able to login unless an until the blacklisted IP is removed from the list.
Go to Loginizer Security -> Brute Force. From there, scroll down until you find the “Blacklist IP“ tab. You can blacklist an IP from therein.
![](https://loginizer.com/blog/wp-content/uploads/2021/04/screenshot-nimbus-capture-2021.04.24-17_04_51-1.png)
Blacklisting IPs
Single IP
Enter the IP Address that you'd like to blacklist in the "Start IP" option & click on "Add Blacklist IP Range".
![](https://loginizer.com/blog/wp-content/uploads/2021/04/screenshot-test.mydomain.com-2021.04.24-16_11_29-1.png)
IP Range
Enter the Start IP & the End IP in their respectful options in order to block a set of IPs. For Example : 192.168.1.132 to 192.168.1.135.
![](https://loginizer.com/blog/wp-content/uploads/2021/04/screenshot-test.mydomain.com-2021.04.24-16_15_42-1.png)
Removing Blacklisted IPs
Single IPs/ IP Ranges
To remove a single IP or a set of IPs, click on the "Delete" link under the "Options" column where the row of the IP that you'd like to remove is located.
![](https://loginizer.com/blog/wp-content/uploads/2021/04/screenshot-test.mydomain.com-2021.04.24-16_18_32-2.png)
All IPs
In order to remove all the IPs, click on the "Delete All Blacklist IP Range(s)" button.
![](https://loginizer.com/blog/wp-content/uploads/2021/04/screenshot-test.mydomain.com-2021.04.24-16_18_32-1-1.png)