flvx/openspec/changes/document-existing-specs/specs/forwarding-rules/spec.md

ADDED Requirements

Requirement: Port Forwarding Rules

The system SHALL support configuring port forwarding rules, defining the listening port on the node and the destination IP/port.

Scenario: Rule Configuration

• WHEN an admin creates a port forwarding rule
• THEN the rule is stored and synchronized to the assigned node.

Requirement: Rate Limiting

The system SHALL support configuring bandwidth rate limits for tunnels and users.

Scenario: Bandwidth Restriction

• WHEN a rate limit is applied to a user
• THEN their total bandwidth usage does not exceed the specified limit across all their tunnels.

Requirement: Traffic Accounting

The system MUST track incoming and outgoing traffic volume for each tunnel and user for billing and quota enforcement.

Scenario: Traffic Calculation

• WHEN traffic flows through a tunnel
• THEN the system increments the user's traffic usage counter accurately.