How to check if IP is blocked from Iptables
Check if IP is blocked:
iptables -L -n --line | grep [IP Address]
If IP appear as DROP or REJECT, the IP has been blocked
Unblock the IP Address:
iptables -I INPUT -s [IP Address] -j ACCEPT
Blocking back an IP Address:
iptables -A INPUT -d [IP Address] -j DROP
service iptables save
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To unblock an IP from the CSF from SSH, please follow the steps below:
2. To check if the IP is blocked by CSF, please execute the following command:
csf -g IP_address
Note: IP_address being the specific IP you wish to check.
3. If the IP is denied and you wish to remove it, please execute the following command:
csf -dr IP_address
4. To complete the process, you will need to restart CSF for the changes to take effect:
csf -r
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Note: Full path to IPTABLES is /sbin/iptables, you can replace command # iptables with /sbin/iptables
Click Here to view the video tutorial for doing this.