DEMO Azure Firewall step by step Explained in 10 Minutes
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- เผยแพร่เมื่อ 5 ก.ย. 2024
- Azure Firewall step by step explained in 10 Minutes
Azure Firewall step by step is a managed, cloud-based network security service that protects your Azure Virtual Network resources. It's a fully stateful (Azure) firewall as a service with built-in high availability and unrestricted cloud scalability.
You can centrally create, enforce, and log application and network connectivity policies across subscriptions and virtual networks. Azure Firewall uses a static public IP address for your virtual network resources allowing outside firewalls to identify traffic originating from your virtual network. The service is fully integrated with Azure (Firewall) Monitor for logging and analytics.
Azure Firewall includes the following features:
Built-in high availability
Availability Zones
Unrestricted cloud scalability
Application FQDN filtering rules
Network traffic filtering rules
FQDN tags
Service tags
Threat intelligence
Outbound SNAT support
Inbound DNAT support
Multiple public IP addresses
Azure Monitor logging
Forced tunneling
Certifications
Azure Firewall can be configured during deployment to span multiple Availability Zones for increased availability. With Availability Zones, your availability increases to 99.99% uptime. For more information, see the Azure Firewall Service Level Agreement (SLA). The 99.99% uptime SLA is offered when two or more Availability Zones are selected.
You can also associate Azure Firewall to a specific zone just for proximity reasons, using the service standard 99.95% SLA.
Unrestricted cloud scalability
Azure Firewall can scale up as much as you need to accommodate changing network traffic flows, so you don't need to budget for your peak traffic.
Application FQDN filtering rules
You can limit outbound HTTP/S traffic or Azure SQL traffic to a specified list of fully qualified domain names (FQDN) including wild cards. This feature doesn't require TLS termination.
Network traffic filtering rules
You can centrally create allow or deny network filtering rules by source and destination IP address, port, and protocol. Azure Firewall is fully stateful, so it can distinguish legitimate packets for different types of connections. Rules are enforced and logged across multiple subscriptions and virtual networks.
FQDN tags
FQDN tags make it easy for you to allow well-known Azure service network traffic through your firewall. For example, say you want to allow Windows Update network traffic through your firewall. You create an application rule and include the Windows Update tag. Now network traffic from Windows Update can flow through your firewall.
Service tags
A service tag represents a group of IP address prefixes to help minimize complexity for security rule creation. You can't create your own service tag, nor specify which IP addresses are included within a tag. Microsoft manages the address prefixes encompassed by the service tag, and automatically updates the service tag as addresses change.
Threat intelligence
Threat intelligence-based filtering can be enabled for your firewall to alert and deny traffic from/to known malicious IP addresses and domains. The IP addresses and domains are sourced from the Microsoft Threat Intelligence feed.
Outbound SNAT support
All outbound virtual network traffic IP addresses are translated to the Azure Firewall public IP (Source Network Address Translation). You can identify and allow traffic originating from your virtual network to remote Internet destinations. Azure Firewall doesn't SNAT when the destination IP is a private IP range per IANA RFC 1918.
If your organization uses a public IP address range for private networks, Azure Firewall will SNAT the traffic to one of the firewall private IP addresses in AzureFirewallSubnet.
Inbound DNAT support
Inbound Internet network traffic to your firewall public IP address is translated (Destination Network Address Translation) and filtered to the private IP addresses on your virtual networks.
Multiple public IP addresses
You can associate multiple public IP addresses (up to 250) with your firewall.
This enables the following scenarios:
DNAT - You can translate multiple standard port instances to your backend servers. For example, if you have two public IP addresses, you can translate TCP port 3389 (RDP) for both IP addresses.
SNAT - Additional ports are available for outbound SNAT connections, reducing the potential for SNAT port exhaustion. At this time, Azure Firewall randomly selects the source public IP address to use for a connection. If you have any downstream filtering on your network, you need to allow all public IP addresses associated with your firewall. Consider using a public IP address prefix to simplify this configuration.
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is there video about how to setup and gather azure firewall audit logs?
hi nice video.. but i am facing this error.. "Action: Deny. Reason: No rule matched. Proceeding with default action." while each and every thing is matched according to your video..
Thank you for your comment. It is possible that you may have missed some steps while setting up the rule. I suggest that you review your setup and make sure that all the settings and parameters are properly configured. If you are still facing the same issue, please feel free to contact us at trainings@memcourse.com and we will be happy to assist you. Thank you.
Can we connect azure express route to azurw firewall
yes
you made this bit complicated, draw the diagram and show jump is behind the firewall