Hello,

we have Odoo 13 hosted in AWS EC2 and enabled access source ACL for specific IP address

(Means said Odoo instance can only accessed by one particular IP address).

we are facing issue on printing Purchase Orders & Sales Orders - almost all printing activities are not working.

when disabling AWS Security ACL, printing working smoothly. 

Did Odoo processing "wkhtmltox" externally for print service ?

If so did it matter of Data Leak ? 

what ACL additionally required to allowed ?