Ensure An Instance is Allowed to Connect to Only Trusted IP Addresses

  • Versão de lançamento: Australia
  • Atualizado 12 de mar. de 2026
  • 1 min. de leitura

    • Use a system property to define a list of IP ranges that are appended to the outbound IP allow list.

    Use the glide.custom.ip.outbound.authenticate.allow system property to define a list of IP ranges that are appended to the outbound IP allow list of an instance. The property value contains a comma separated range of IP addresses in IPv4 or IPv6 format. IP ranges are specified using a hyphen (10.0.10.14-10.0.10.19), using CIDR notation (10.0.10.0/24), or consist of a single IP address (10.0.10.5). The instance is allowed to connect to the IP ranges in this property, unless listed in the IP deny list.

    Nota:
    IP ranges in this property are appended to the outbound IP allow list regardless of the value of the glide.ip.authenticate.strict property. The IP Address Access Controls [ip_access] table provides an equivalent option to add to both the inbound/outbound allow/deny IP lists of an instance. Refer to the Steps to Configure section in IP range based authentication.

    Ensure that the glide.custom.ip.outbound.authenticate.allow system property value is either an empty, or a comma-separated list containing only trusted IP ranges that your want to allow your instance to access.

    More information

    Attribute Description
    Configuration name glide.custom.ip.outbound.authenticate.allow
    Configuration type System Properties (/sys_properties_list.do)
    Data type String
    Recommended value Empty, or a comma-separated list containing only trusted IP ranges that your want to allow your instance to access.
    Default value None
    Fallback value None
    Category Architecture, design, and threat modeling
    Security risk
    • Severity score: 4.3
    • CVSS score: Medium
    • Security risk details: If IP ranges are added to the property, it increases the risk of that an instance may connect to unauthorized or non-essential external services that should otherwise be blocked. This can weaken network-level security. In cases where additional IP ranges are necessary, be careful to include a minimal set of only trusted IPs.
    Functional impact There should be no functional impact. It can only be used to increase your instance's access.
    Dependencies and prerequisites None