Categories:: System Functions (System Information)

SYSTEM$WHITELIST_PRIVATELINK¶

Returns hostnames and port numbers for AWS PrivateLink and Azure Private Link deployments to add to your firewall’s allowed list so that you can access Snowflake from behind your firewall.

The output of this function can then be passed into SnowCD to diagnose and troubleshoot your network connection to Snowflake.

Typically, Snowflake customers use a firewall to prevent unauthorized access. By default, your firewall might block access to Snowflake. To update your firewall’s allowed list, you need to know the hostnames and port numbers for the URL associated with your Snowflake account identifier, stages, and other hosts used by Snowflake.

For more details about allowed lists for the Snowflake clients you use, see Allowing Hostnames.

For more information about using AWS PrivateLink with Snowflake, see AWS PrivateLink & Snowflake.

For more information about using Azure Private Link with Snowflake, see Azure Private Link & Snowflake.

Syntax¶

SYSTEM$WHITELIST_PRIVATELINK()

Arguments¶

None.

Returns¶

The data type of the returned value is VARIANT. The value is an array of JSON structures. Each JSON structure contains three key/value pairs:

type

Snowflake supports the following types:

SNOWFLAKE_DEPLOYMENT

Hostname and port number information for your Snowflake account.

SNOWFLAKE_DEPLOYMENT_REGIONLESS

Hostname and port number information for your organization.

For more information, see Account Identifiers.

STAGE

Location (i.e. Amazon S3, Google Cloud Storage, or Microsoft Azure) where files that the Snowflake client can read or write are stored.

SNOWSQL_REPO

Endpoint accessed by SnowSQL to perform automatic downloads/upgrades.

OUT_OF_BAND_TELEMETRY

The hosts to which drivers report metrics and out-of-band incidents such as OCSP issues.

OCSP_CACHE

Snowflake-provided alternative source of OCSP certificate information in case the primary OCSP responder cannot be reached. Most of the latest versions of the Snowflake clients access the OCSP cache rather than connecting directly to the OCSP responder.

DUO_SECURITY: The hostname for the Duo Security service that is used with Multi-Factor Authentication (MFA) while authenticating to Snowflake.
OCSP_RESPONDER: Hostname to contact to verify that the OCSP SSL certificate has not been revoked.

host

Specifies the full hostname for type (e.g. "xy12345.east-us-2.azure.snowflakecomputing.com", "ocsp.snowflakecomputing.com").

port

Specifies the port number for type (e.g. 443, 80).

Usage Notes¶

The function must be called as a system function.
The output may include multiple entries for certain types (STAGE, etc.).
This function is supported on AWS and Azure deployments only.

Examples¶

To call the function:

SELECT SYSTEM$WHITELIST_PRIVATELINK();
Sample output:
[
  {"type":"SNOWFLAKE_DEPLOYMENT", "host":"xy12345.us-west-2.privatelink.snowflakecomputing.com","port":443},
  {"type":"STAGE",                "host":"sfc-ss-ds2-customer-stage.s3.us-west-2.amazonaws.com","port":443},
  ...
  {"type":"SNOWSQL_REPO",         "host":"sfc-repo.snowflakecomputing.com",                     "port":443},
  ...
  {"type":"OUT_OF_BAND_TELEMETRY","host":"client-telemetry.snowflakecomputing.com","port":443},
  {"type":"OCSP_CACHE",           "host":"ocsp.station00752.us-west-2.privatelink.snowflakecomputing.com","port":80}
]
In this sample output, note the following:

For readability, whitespace and newline characters have been added. In addition, some entries have been omitted.

The region ID (us-west-2) in some of the hostnames indicates the account is in the US West region ; however, the region ID is not utilized in the hostname for SNOWFLAKE_DEPLOYMENT.

To extract the information into tabular output rather than JSON, use the FLATTEN function in conjunction with the PARSE_JSON function:

SELECT t.VALUE:type::VARCHAR as type,
       t.VALUE:host::VARCHAR as host,
       t.VALUE:port as port
FROM TABLE(FLATTEN(input => PARSE_JSON(SYSTEM$WHITELIST_PRIVATELINK()))) AS t;

Sample output:

+-----------------------+---------------------------------------------------+------+
| TYPE                  | HOST                                              | PORT |
+-----------------------+---------------------------------------------------+------+
| SNOWFLAKE_DEPLOYMENT  | xy12345.snowflakecomputing.com                    | 443  |
| STAGE                 | sfc-customer-stage.s3.us-west-2.amazonaws.com     | 443  |
  ...
| SNOWSQL_REPO          | sfc-repo.snowflakecomputing.com                   | 443  |
  ...
| OCSP_CACHE            | ocsp.snowflakecomputing.com                       | 80   |
  ...
+-----------------------+---------------------------------------------------+------+