Case Study

Improving Web Security Through Apache Hardening

Challenge

A customer's public-facing web infrastructure received a poor external security assessment due to missing HTTP security headers, outdated TLS settings and inconsistent Apache configuration.

The objective was to improve the overall security posture without affecting application compatibility or introducing unnecessary operational complexity.

Approach

A comprehensive Apache hardening strategy was developed based on current security best practices.

The implementation included:

• Modern TLS configuration

• Secure cipher selection

• HTTP Strict Transport Security (HSTS)

• Content Security Policy (CSP)

• X-Frame-Options

• X-Content-Type-Options

• Referrer Policy

• Permissions Policy

• Secure cookie configuration where applicable

• Removal of unnecessary information disclosure

• Consolidation of all security settings into a reusable security.conf include file

Particular attention was paid to maintaining compatibility while significantly improving the externally visible security posture.

Result

The resulting configuration provided a standardized security baseline that could easily be reused across multiple Apache installations.

Benefits included:

• Improved external security assessment results

• Consistent security configuration across environments

• Reduced administrative effort

• Simplified maintenance through centralized configuration

• Better compliance with current web security recommendations

Technologies

Apache HTTP Server • TLS • HTTP Security Headers • CSP • HSTS • PKI • Linux • Bash

Infrastructure Standardization Across Mixed Linux Distributions

Challenge

Many enterprise environments evolve over time and end up running a heterogeneous mix of Linux distributions, including Red Hat Enterprise Linux, Debian, Ubuntu and SUSE.

While each platform serves its purpose, differences in package management, service handling, configuration layouts and operational procedures often lead to unnecessary complexity, increased maintenance effort and inconsistent security standards.

The objective was to establish a unified operational model without forcing organizations into a single distribution.

Approach

A distribution-independent management strategy was developed, focusing on standardization rather than replacement.

Key design principles included:

• POSIX-compliant administration scripts

• Automatic operating system detection

• Unified configuration structures

• Common service management procedures

• Standardized Apache, Squid and Postfix configurations

• Reusable Ansible roles

• Consistent security baselines

• Centralized documentation and operational guidelines

Where platform-specific behaviour was unavoidable, it was abstracted behind common interfaces to provide a consistent administrative experience.

Result

The standardized approach significantly reduced operational complexity while preserving the flexibility to support multiple Linux distributions.

Key benefits included:

• Simplified system administration

• Faster onboarding of new administrators

• Reduced configuration drift

• Improved maintainability

• Consistent security configuration

• Easier automation

• Faster operating system migrations

• Lower long-term operational costs

The resulting framework enabled administrators to manage heterogeneous Linux infrastructures using largely identical operational procedures, regardless of the underlying distribution.

Technologies

Debian • RHEL • AlmaLinux • Ubuntu • SUSE • Bash • POSIX Shell • Ansible • Apache • Squid • Postfix • Git