Spamhaus in CSF Firewall

Hi guys
Is possible configure the Spamhaus in CSF Firewall?
If yes, anyone can help me?

Yes.
Check the file '/etc/csf/csf.blocklists'. You can enable three lists:
SPAMDROP
SPAMEDROP
SPAMDROPV6


Regards,
Netino

Thanks
One thing, yesterday I try block specific countries on CSF Firewall, but after that my websites are very slow
I have one website with A score on Gtmetrix, and now have F score
Any idea?

you have info about this in csf firewall, as using big block lists with firewall will slow down the server response time as it need to check each IP.

Thanks
One thing, yesterday I try block specific countries on CSF Firewall, but after that my websites are very slow
I have one website with A score on Gtmetrix, and now have F score
Any idea?

To block countries, you must use the "Country Code Lists and Settings" section of '/etc/csf/csf.conf'.
There you must choose the database that will be used to find the countries for each IP address, MaxMind or db-ip, ipdeny, iptoasn.

Keep in mind that searching for the country of each IP address has a cost on the overall performance of the system too.
Each connection to your server must be searched by the country code.
Read that section to get informed.

Hi
Does this process add additional load to my server?

Yes.
Check the file '/etc/csf/csf.blocklists'. You can enable three lists:
SPAMDROP
SPAMEDROP
SPAMDROPV6


Regards,
Netino