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Application Layer Gateways (ALGs)

  • Support for client identifier in forwarded DNS queries using experimental EDNS(0) option (NFX150, NFX250, NFX350, cSRX, SRX1500, SRX1600, SRX2300, SRX4100, SRX4120, SRX4200, SRX4300, SRX4600, SRX4700, SRX5400, SRX5600, SRX5800, and vSRX 3.0)—You can enhance DNS query responses by utilizing the Client ID in Forwarded DNS Queries feature on SRX Series devices. This functionality supports precise client identification, essential for services such as parental control. You can configure SRX Series Firewalls to include client identifiers such as MAC addresses, IPv4, or IPv6 addresses in DNS queries. This feature, intended for controlled environments, generates targeted DNS responses based on the originating device's identity, improving service accuracy and network efficiency.

    [See DNS ALG.]