IPC Debian Server Block IP addresses

[dada]

Hi,

My server is being attacked can anyone help me how to block ip addresses.

Thanks

[jensebub]

Don't use defaultports for all services.
Install and configure fail2ban to deny attacks and iptables to block ips

Greetings
jensebub

Gesendet von meinem GT-I8190 mit Tapatalk

[dada]

how to use iptables to block ips

[jensebub]

man iptables

Code: Alles auswählen

iptables -I INPUT -s 10.10.10.10 -j REJECT #IP Block
iptables -D INPUT -s 10.10.10.10 -j REJECT #Block deaktivate

e.g.

Code: Alles auswählen

iptables –A INPUT –s 8.0.0.0/8 –j REJECT

blocking ip 8.x.x.x

Code: Alles auswählen

iptables –A INPUT –s 8.8.0.0/16 –j REJECT

blocking ip 8.8.x.x

Code: Alles auswählen

iptables –A INPUT –s 8.8.8.0/24 –j REJECT

blocking ip 8.8.8.x

And fail2ban is here explained