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How to block IP

Posted by Rishikesh Vispute Categories: How to

To find out whether any particular IP is blocked or not on the server =>

# route -n |grep <IP Address>  ::

for example: #route -n |grep  58.8.66.156

To unblock an IP =>

# route del <IP Address> reject

::for example: #route del 58.8.66.156 reject

To block an IP =>

# route add <IP Address> reject

:: for example: #route add  58.8.66.156 reject

Or

How to check that ip is blocked or not:

#cat /etc/csf/csf.deny

check whether that the ip which you searching is present in the file and if you want that insert a ip in file to deny then after inserting a ip give the command:

#csf -r

Add ip in allow file by giving command

# cat /etc/csf/csf.allow                     // Then give  following  command

# csf -a ipadress


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