Locked myself out of SSH with UFW in EC2 AWS

Question

I have an EC2 Instance with Ubuntu. I used sudo ufw enable and after only allow the mongodb port

sudo ufw allow 27017

When th

Answer 1

• Launch another EC2 server instance The best way to accomplish this is use EC2’s “Launch More Like This” feature. This will ensure that the OS type, security group and other attributes are the same thus saving a bit of setup time.
• Stop the problem instance
• Detach volume from problem instance
• Attach volume to new instance

Note: Newer Linux kernels may rename your devices to /dev/xvdf through /dev/xvdp internally, even when the device name entered is /dev/sdf through /dev/sdp.

• Mount the volume

cd ~
mkdir lnx1
sudo mount /dev/xvdf ./lnx1

• Disable UFW

cd lnx1
sudo vim ufw.conf

Now find ENABLED=yes and change it to ENABLED=no.

• Detach volume

Be sure to unmount the volume first:

sudo umount ./lnx1/

• Reattach the volume to /dev/sda1 on our problem instance
• Boot problem instance
• Reassign elastic IP address if necessary
• Delete the temporary instance and its associated volume

Hola !! you are good go.