The command to deny an IP:
# csf -d ip.address
Here is the script to Block number of IPs:
1, Save the IPs in a text file:
vi block.txt ..... 126.96.36.199 188.8.131.52 184.108.40.206 220.127.116.11 .....
2, Blocking them using for loop:
# for i in `cat block.txt`; do csf -d $i;done