Secure redis instances

  • Demo server (135.181.254.90) was affected by this.
  • Firewall updated:
sudo ufw enable
sudo ufw allow ssh
sudo ufw deny 6379

sudo nano /etc/ufw/after.rules
# ADDED AT THE TOP
*filter
:DOCKER-USER - [0:0]
-A DOCKER-USER -p tcp --dport 6379 ! -s 135.181.254.90 -j DROP
-A DOCKER-USER -j RETURN
COMMIT

sudo ufw reload
sudo systemctl restart docker

Test from your machine:

nc -vz 135.181.254.90 6379
Edited by Avinash