Application security iptables

To configure iptables on the Nautilus backup server to allow incoming connections to Nginx (port 8094) and block incoming connections to Apache (port 5000), follow these steps:

1. Allow Incoming Connections to Nginx (Port 8094)

Run:

# put at the end
sudo iptables -A INPUT -p tcp --dport 8094 -j ACCEPT
# put at the top
sudo iptables -I INPUT -p tcp --dport 8080 -j ACCEPT

2. Block Incoming Connections to Apache (Port 5000)

Run:

sudo iptables -A INPUT -p tcp --dport 5000 -j DROP

3. Save the Rules to Make Them Permanent

On CentOS/RHEL, save the rules:

# this gave an error sudo iptables-save > /etc/sysconfig/iptables
sudo /usr/libexec/iptables/iptables.init save

On Ubuntu/Debian, use:

sudo netfilter-persistent save

4. Verify Rules

Check the active rules:

sudo iptables -L -v -n

This ensures that Nginx is accessible while Apache remains blocked. You can find more details in this guide or this tutorial. Let me know if you need further customization! 🚀