![]() To set your UFW rules back to the defaults, you can be sure that you’ll be able to follow along with this tutorial. This means anyone trying to reach your server would not be able to connect, while any application within the server would be able to reach the outside world. ![]() By default, UFW is set to deny all incoming connections and allow all outgoing connections. These rules handle the traffic that does not explicitly match any other rules. The first rules to define are your default policies if you’re just getting started with your firewall. Let’s start by setting the default policies. Before enabling UFW, however, you will want to ensure that your firewall is configured to allow you to connect via SSH. When UFW is enabled, it will be configured to write both IPv4 and IPv6 firewall rules. To configure this, open the UFW configuration file /etc/default/ufw with nano or your favorite editor sudo nano /etc/default/ufw If your Debian server has IPv6 enabled, you will want to ensure that UFW is configured to support IPv6 this will ensure that UFW will manage firewall rules for IPv6 in addition to IPv4. This tutorial is written with IPv4 in mind but will work for IPv6 as long as you enable it. If not, install it now using apt: sudo apt install ufw Since Debian does not install UFW by default, you will have installed and enabled UFW as you followed the entire Initial Server Setup tutorial, you will have installed and enabled UFW. Review the following steps to get an expert on this subject. Stay with us, this tutorial will show you how to set up a firewall with UFW on Debian 10. How to set up a Firewall with UFW on Debian 10 10- Disabling or Resetting UFW (optional).Connections to a Specific Network Interface.How to set up a Firewall with UFW on Debian 10.
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