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Merge pull request #216893 from vhorne/fw-limits
update max ip groups
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includes/firewall-limits.md

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author: vhorne
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ms.service: firewall
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ms.topic: include
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ms.date: 10/27/2022
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ms.date: 11/02/2022
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ms.author: victorh
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ms.custom: include file
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|Minimum AzureFirewallSubnet size |/26|
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|Port range in network and application rules|1 - 65535|
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|Public IP addresses|250 maximum. All public IP addresses can be used in DNAT rules and they all contribute to available SNAT ports.|
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|IP addresses in IP Groups|Maximum of 100 IP Groups per firewall.<br>Maximum 5000 individual IP addresses or IP prefixes per each IP Group.
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|IP addresses in IP Groups|Maximum of 200 IP Groups per firewall.<br>Maximum 5000 individual IP addresses or IP prefixes per each IP Group.
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|Route table|By default, AzureFirewallSubnet has a 0.0.0.0/0 route with the NextHopType value set to **Internet**.<br><br>Azure Firewall must have direct Internet connectivity. If your AzureFirewallSubnet learns a default route to your on-premises network via BGP, you must override that with a 0.0.0.0/0 UDR with the **NextHopType** value set as **Internet** to maintain direct Internet connectivity. By default, Azure Firewall doesn't support forced tunneling to an on-premises network.<br><br>However, if your configuration requires forced tunneling to an on-premises network, Microsoft will support it on a case by case basis. Contact Support so that we can review your case. If accepted, we'll allow your subscription and ensure the required firewall Internet connectivity is maintained.|
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|FQDNs in network rules|For good performance, do not exceed more than 1000 FQDNs across all network rules per firewall.|
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|TLS inspection timeout|120 seconds|

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