AFAIK LedgerSMB does not have the ability to print product labels (containing barcodes). That would require a third-party software product that would be pointed at a PostgreSQL. Can someone confirm the following?
1. The above is true: need a third-party software app to print labels.
2. PostgreSQL can be configured to permit certain limited privileges from a specific IP address, and only on specific tables. For example, only SELECT privs on the Parts table for IP address <whatever>.