How to check if an IP is blocked in IPTABLES

[Jackk]

Hello,

How to check if an IP is blocked in IPTABLES?

[Tommy]

Hello Jackk,

You can check below command to verify your IP is blocked or not in IPTABLES

iptables -L -n --line | grep [IP Address]


if IP appears as DROP or REJECT, the IP has been blocked


also you can use the below command to unblock IP


iptables -I INPUT -s [IP Address] -j ACCEPT

[Jackk]

Hello Tommy,

Thank you for your reply.

can you please let me know also how to block IP manually using IPTABLES?

[Tommy]

Hello Jackk,


Please use the below command to blocking back an IP address in IPTABLES


iptables -A INPUT -d [IP Address] -j DROP