Policy
Explicitly allowed network ports
Microsoft Edge
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows7
There's a list of restricted ports built into Microsoft Edge. Connections to these ports fail. This policy allows bypassing that list. The set of ports is defined as a comma-separated list that outgoing connections should be permitted on. Ports are restricted to prevent Microsoft Edge from being used as a vector to exploit various network vulnerabilities. Setting this policy exposes your network to attacks. This policy is intended as a temporary workaround for error code "ERR_UNSAFE_PORT" while migrating a service running on a blocked port to a standard port (for example, port 80 or 443). Malicious websites can easily detect that this policy is set. They also detect the ports for which this policy is set, and then they use that information to target attacks. Each port listed in this policy is labeled with a date until which that port can be unblocked. After that date, the port is restricted, regardless of whether it's specified by the value of this policy. Leaving the value empty or unset means that all restricted ports are blocked. Invalid port values set through this policy are ignored while valid ones are still applied. This policy overrides the "--explicitly-allowed-ports" command-line option. Policy options mapping: * 554 (554) = port 554 (can be unblocked until 2021/10/15) * 10080 (10080) = port 10080 (can be unblocked until 2022/04/01) * 6566 (6566) = port 6566 (can be unblocked until 2021/10/15) * 989 (989) = port 989 (can be unblocked until 2022/02/01) * 990 (990) = port 990 (can be unblocked until 2022/02/01) Use the preceding information when configuring this policy. Example value: 10080
Registry values
How enabled and disabled states update the registry.
No explicit registry values are set for enabled or disabled states.
Policy elements
Inputs and configuration options exposed by this policy.
| Scope | Element | Type | Registry mapping | Constraints & behavior | Copy |
|---|---|---|---|---|---|
Explicitly allowed network ports ID ExplicitlyAllowedNetworkPortsDesc | list | Path Software\Policies\Microsoft\Edge\ExplicitlyAllowedNetworkPorts Value name 1, 2, … Type REG_SZ | List: standard |