External network access limitations¶
This topic describes limitations for accessing external network locations from user-defined functions and procedures.
Currently, handlers written only in Java or Python may access network locations external to Snowflake.
External network locations not on the public internet are not supported for external access. For example, locations behind a virtual private network (VPN) or virtual network (VNet) can’t be reached from a UDF or procedure.
This feature is currently available to accounts on all AWS and Azure regions except Gov.
For more information, see Supported Cloud Regions.
Wildcards are not supported for VALUE_LIST values in network rules.
External access is not supported for trial accounts.