This tutorial will explain how to deny an IP address or how to allow only a particular IP address to access your website. This is extremely useful to protect your website from hackers or to block unwanted visitors.
You need to create an .htaccess file in your public_html folder and add these lines below, based on your requirements.
To Deny a Specific IP Address
The below code will only deny one IP address from accessing the website.
Deny from 192.0.0.1
Just change the IP address to the IP address that you want to deny and paste it in the .htaccess file.
To Deny a Specific Domain
We can deny a specific domain from accessing our domains by adding the below line of code to your .htaccess file.
Deny from 192.0.0.1/255.255.255.0
You need to change the IP address and netmask value to match the domain that you want to block.
To Deny Multiple IP’s in a Single Line of Code
Leave a blank space with each IP for separation.
Deny from 111.111.111.111 222.222.222.222 333.333.333.333
All you need to do is replace the IPs that you want to deny and paste it in the .htaccess file.
To Allow Only a Single IP
The below set of .htaccess rule will deny access to the website from every IP address expect the IP address mentioned in the rule.
Order Deny,Allow
Deny from all
Allow from 111.111.111.111
Here we first deny all visitors, and then allow only the visitor from the IP address specified above.
To Deny a Single IPv6 Address
To block a IPV6 address via .htaccess, follow the syntax below:
Deny from 2001:cdba:0000:0000:0000:0000:3257:9652
Conclusion
Now, when a user tries to visit your site from a blocked IP address, they would see a 403 Forbidden page instead.