External network access limitations¶
This topic describes limitations for accessing external network locations from user-defined functions and procedures.
Limitations¶
Currently, handlers written only in Java or Python may access network locations external to Snowflake.
When using a wildcard in a VALUE_LIST value in a network rule, the following are not valid wildcard uses:
snowflake.*.google.com
Cannot be used to match
snowflake.sub1.sub2.google.com
because the asterisk can only be used to match alphanumeric characters and hyphens.*.*.google.com
Invalid because there are multiple asterisks in the wildcard.
*.com
Invalid because the asterisk cannot be used to match the secondary level domain.
When using a secret of the PASSWORD type, the colon character (
:
) is not supported in the USERNAME or PASSWORD parameters.By default, Snowflake does not enable external access for trial accounts. Contact your account representative to get external access enabled for a trial account.