ReferencePorts
Port 4101
Kratos IAM (admin), Admin API
Port 4101, Kratos IAM (admin)
Role: Admin API
Exposure: host-bound (firewall to localhost)
Purpose
Employee identity CRUD.
Security
This port must be blocked at the host firewall from the internet. Only Caddy (ports 80/443) is publicly reachable.
Verify exposure
# From outside the VPS
nmap -p 4101 <vps-ip>
# Expected: filtered / closed