TLS inspection:Azure Firewall Premium terminates outbound and east-west transport layer security (TLS) connections. Inbound TLS inspection is supported in conjunction with Azure Application Gateway allowing end-to-end encryption. Azure Firewall performs the required value-added security functions and re-encrypts the traffic which is sent to the original destination.
IDPS:Azure Firewall Premium provides signature-based intrusion detection and prevention system (IDPS) to allow rapid detection of attacks by looking for specific patterns, such as byte sequences in network traffic or known malicious instruction sequences used by malware.
Web categories:Allows administrators to filter outbound user access to the internet based on categories (for example, social networking, search engines, gambling, and so on), reducing the time spent on managing individual fully qualified domain names (FQDNs) and URLs. This capability is also available for Azure Firewall Standard based on FQDNs only.
URL filtering:Allow administrators to filter outbound access to specific URLs, not just FQDNs. This capability works for both plain text and encrypted traffic if TLS inspection is enabled.