# IP whitelist Business
Summary
Allow access only from whitelisted IP addresses/ranges. Complements the profession-based access control; similar to email domain whitelist but based on source IP.
# Purpose
- Access control for employees/locations based on known source IPs (office, VPN, data center).
- Complements the site policy (access groups); does not replace it.
# How it works
- During login, DocCheck checks profession and source IP.
- Access is granted if the profession is allowed OR the source IP is on the whitelist.
- If the profession is not allowed AND the source IP is not on the whitelist: access is denied.
# Configuration
- In the login client settings in DocCheck Access, add the IP addresses.
- Multiple IP addresses can be added.
# Notes
- Subnets/IP ranges are not supported; only individual IP addresses can be added.
- Scopes/consents and the OAuth2 flow remain unchanged.
- Can be combined with the Email domain whitelist.