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How do I allow certain IPs and block all other connection in iptables on AMAZON EC2?

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You can accomplish this using UFW.

Enable UFW and set default incoming to deny:

$ sudo ufw enable && sudo ufw default deny incoming 

Then you can allow specific IP's with:

$ sudo ufw allow from 192.168.1.10 to any 

This will allow IP-address 192.168.1.10 to any port on your firewall.

  • ubuntu@master:~$ sudo ufw enable && sudo ufw default deny incoming Command may disrupt existing ssh connections. Proceed with operation (y|n)? y Firewall is active and enabled on system startup Default incoming policy changed to 'deny' (be sure to update your rules accordingly) ubuntu@master:~$ sudo ufw allow from 10.9.XX.xxto any Rule added After this if i tried to take new session with putty (from the specific ip which I allowed Ip addresses) I couldn't make it.Any idea ? – prem May 25 '15 at 13:25
  • The IP (10.9.XX.XX) you allowed, is that your public IP address? – krt May 26 '15 at 7:39
  • I got it now.Will check it with public ip this may work .I have one issue like I denied all incoming connection with private ip so that I couldn't able to take ssh for that instance.Any idea? – prem May 26 '15 at 7:47

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