Serving Multiple Domains on One Apache Server Using Virtual Hosts
Learn how to use Apache Virtual Hosts to serve multiple domain names from a single server IP, including configuration examples and verification steps.
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Apache httpd 2.4 Reverse Proxy as a Trust Boundary
Use Apache httpd 2.4 with mod_proxy and mod_authz_core to terminate TLS and shield backend application servers from public networks.
Implementing Apache Reverse Proxy with mod_proxy and mod_proxy_http
Learn how to configure Apache as a reverse proxy using mod_proxy and mod_proxy_http to securely route traffic to backend application servers.
Apache 2.4 Reverse Proxy Architecture: Minimal Viable Design for TLS Termination and Backend Load Balancing
Architecture note for a minimal Apache 2.4 reverse proxy that terminates TLS, load-balances HTTP backends with health checks, preserves client IP, and supports graceful draining — plus the triggers that force a redesign.
Diagnosing and Resolving Apache 503 Service Unavailable Errors from Worker Exhaustion
Learn how to diagnose and fix Apache 503 Service Unavailable errors caused by worker exhaustion, including tuning MaxRequestWorkers and KeepAliveTimeout.
Apache Reverse Proxy: mod_proxy Design and Trust Boundaries
Apache reverse proxy design using mod_proxy: disable open proxying, forward to trusted backend, preserve client IP, and validate with apachectl configtest and curl.
Decoupling Your Backend: Implementing a Reverse Proxy with Apache mod_proxy
Learn how to use Apache mod_proxy to decouple frontend clients from backend servers, enabling SSL termination and preserving client identity with X-Forwarded-For headers.
Enable and Verify Apache 2.4 mod_rewrite for URL Rewriting
Learn how to enable Apache 2.4’s mod_rewrite, write URL‑rewrite rules, verify them with curl and logs, and recover if something breaks.
Diagnosing Apache HTTP Server 2.4 HTTP 403 Forbidden Errors
A reachable URL returns HTTP 403 Forbidden despite correct file permissions. This guide covers Apache 2.4 authorization context, config checks, and SELinux verification.