Azure Firewall FAQ | Microsoft® Docs
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May 14, 2020
Azure Firewall resolves FQDNs using Azure DNS only. A custom DNS server isn't supported. There's no impact on DNS resolution on other subnets. We're working to relax this limitation. Azure Firewall DNAT doesn't work for private IP destinations: Azure Firewall DNAT support is limited to Internet egress/ingress.
The Firewall A firewall is a hardware device or software application that sits between your computer and the Internet and blocks all Internet traffic from reaching your computer that you have not
Here's how a firewall works: The IT (information technology) or network manager sets up specific rules that the firewall will use to filter out unwanted and dangerous intrusions. For example, the firewall could shut down any nonessential ports that a hacker might probe for and open (given the opportunity). In this type of firewall deployment, the internal network is connected to the external network/Internet via a router firewall. The firewall inspects and filters data packet-by-packet. Packet-filtering firewalls allow or block the packets mostly based on criteria such as source and/or destination IP addresses, protocol, source and/or destination Azure Firewall resolves FQDNs using Azure DNS only. A custom DNS server isn't supported. There's no impact on DNS resolution on other subnets. We're working to relax this limitation. Azure Firewall DNAT doesn't work for private IP destinations: Azure Firewall DNAT support is limited to Internet egress/ingress. Click Start and in the Search for Programs and Files text box, type firewall, and press Enter. In the search results, click Windows Firewall. If the Windows Firewall is enabled, the Windows Firewall state will be "on." To turn it off, click Change settings or Turn Windows Firewall on or off in the left column. - [Instructor] Another gauntlet you can throw…before the bad guys is a firewall.…In addition to antivirus and other security tools,…a firewall works to monitor and regulate traffic…between your computer and the internet.…It ensures that the information coming in was asked for…and that the information going out has permission to leave.…The process isn't noticeable until something