Network Security 2025: Dev Guide

Key Changes

• Auto-updated IP blocklists for Tor/bot traffic
• Circuit breaker patterns in YAML
• CEL interpolation for smart routing

CEL Interpolation

CEL lets you write dynamic routing rules using request data. Think of it as a safe, API-focused programming language.

Basic Examples

# Match specific headers
match: request.headers['user-agent'].contains('Mozilla')

# Route based on path
match: request.path.startsWith('/api/v2')

# Combine conditions
match: request.method == 'POST' && request.path.contains('/admin')

Common Use Cases

• Header-based routing
• Geographic routing (using IP data)
• A/B testing
• Version-based traffic splitting

Circuit Breaker Implementation

Protect your APIs from cascading failures with automatic circuit breaking.

Basic Config

edge:
  circuit_breaker:
    error_threshold: 50    # Percentage of errors
    interval: 10s         # Time window
    tripped_duration: 30s # Recovery time

API-Specific Example

endpoints:
  - path: /api/v1/*
    circuit_breaker:
      error_threshold: 25
      interval: 5s
      tripped_duration: 60s

Combined Protection

edge:
  rate_limit: 100/min
  circuit_breaker:
    error_threshold: 40
    interval: 15s

Monitored Events

• 5xx responses
• Connection timeouts
• TLS handshake failures

Security Tooling Updates

• Traffic Policy actions with Basic Auth
• Request data manipulation (headers, routes)
• TLS termination + mTLS support

Latest Features

• OAuth/OIDC modules in Traffic Policy
• IP Intelligence metadata per request
• Query string/Base64/JSON encoding helpers

Pro Tip: Circuit breaker functionality works alongside existing DDoS protection