API Gateways
Gateways centralize authn, TLS, rate limits — not object authz. Lab :8819.
Visual · api_gateway
Gateway helps the edge. Services still check objects. Original Cyberlium.
A gateway is a front door policy engine — not a magic BOLA fix.
API gateways terminate TLS, authenticate, route, and rate-limit. Object-level authz remains in services. Inspect YOUR gateway health on lab.
1. What gateways do well
Central authn, API keys, JWT validate, IP allowlists, WAF features, routing.
Consistent logging at the edge.
Command guide
Try these commands — What gateways do well
═══ TOOLS & WEBSITES ═══ Browse / read these (authorized learning only — stay in YOUR lab / program scope)
API gateway — https://swagger.io/resources/articles/basics-of-api-gateways/ Zero trust APIs — https://cheatsheetseries.owasp.org/cheatsheets/REST_Security_Cheat_Sheet.html
═══ INSTALL ═══
Linux (Debian/Ubuntu):
Command — copy this
sudo apt install curl sudo apt install jq
macOS:
Command — copy this
brew install jq
Windows: Built-in (PowerShell: Invoke-WebRequest)
Command — copy this
choco install jq
═══ LINUX / macOS ═══
Command — copy this
curl -sS -I http://127.0.0.1:8819/ 2>/dev/null | grep -iE 'x-request-id|x-ratelimit|server' || curl -sS -I http://127.0.0.1:8819/ curl -sS http://127.0.0.1:8819/metrics 2>/dev/null | jq . || curl -sS http://127.0.0.1:8819/health
Primary tools to practice this lesson: curl, jq. Reference sites: API gateway (https://swagger.io/resources/articles/basics-of-api-gateways/); Zero trust APIs (https://cheatsheetseries.owasp.org/cheatsheets/REST_Security_Cheat_Sheet.html). Run every command in the box — install first, then the usage lines — only on YOUR lab / program scope.
2. What they do not replace
BOLA/object checks. Business rule authz. Safe serializers.
Misconfigured gateways can fail open — test denies.
3. Lab glance
Hit /gateway/health and a denied /admin on YOUR lab.
No scanning random cloud gateways.
4. What you ship: gateway responsibilities split
Edge vs service duties named. Lab health check.
5. What you record before the next lesson
Health + deny status from :8819.
6. Wrong vs right: stranger APIs vs literacy on systems you own
Worked failure — same API word, opposite target. Right never needs a live shop or classmate token.
- Wrong: Assume gateway JWT check fixes all IDOR.
- Right: Write the split. Next: monitoring.
Mission: gateway split sheet
1) List gateway duties. 2) List service duties. 3) curl health on lab.
Stuck? Ask Cyberlium AI Mentor
Ask Mentor: “Does API gateway stop BOLA?”
APPLY: BOLA checks live mainly in:
APPLY: True or False: Gateway replaces object authz.
APPLY: Gateways often handle:
Monitoring and Logging
Part of API Security with AI — Gateway Monitoring and Capstone Lab.
API Security Checklist
Part of API Security with AI — Gateway Monitoring and Capstone Lab.
Capstone Lab — Full API Review
Part of API Security with AI — Gateway Monitoring and Capstone Lab.