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How to Configure dnsmasq on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure dnsmasq on Debian 13

Introduction Deploying configure dnsmasq on a Debian 13 Trixie machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian 13 Trixie is fully updated […]

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How to Configure Nginx Rate Limiting and Connection Throttling on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx Rate Limiting and Connection Throttling on RHEL 8

Rate limiting and connection throttling are essential defences against brute-force attacks, credential stuffing, and high-volume web scrapers. Nginx provides two built-in modules — ngx_http_limit_req_module for request-rate limiting and ngx_http_limit_conn_module for connection limiting — both compiled into the default binary. On RHEL 8 these capabilities are available immediately after installing Nginx from the AppStream module stream […]

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How to Configure DNS with Unbound on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure DNS with Unbound on Debian 13

Introduction Deploying configure dns with unbound on a Debian 13 Trixie machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian 13 Trixie is […]

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How to Configure Nginx with ModSecurity WAF on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx with ModSecurity WAF on RHEL 8

ModSecurity is not limited to Apache — it can also protect Nginx deployments through a dedicated dynamic module called ngx_http_modsecurity_module. The module embeds the ModSecurity v3 library directly into Nginx’s request processing pipeline, enabling the same OWASP Core Rule Set that Apache users rely on. On RHEL 8, Nginx is available from the AppStream module […]

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How to Install BIND9 DNS Server on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install BIND9 DNS Server on Debian 13

Introduction How to Install BIND9 DNS Server on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. […]

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How to Set Up ModSecurity WAF with Apache on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up ModSecurity WAF with Apache on RHEL 8

ModSecurity is a widely-deployed open-source Web Application Firewall (WAF) that integrates directly with Apache as a module. Combined with the OWASP Core Rule Set (CRS), it provides protection against the most common web attack categories including SQL injection, cross-site scripting, and remote code execution. On RHEL 8, both the mod_security Apache module and the mod_security_crs […]

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How to Configure Squid Proxy on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Squid Proxy on Debian 13

Introduction Deploying configure squid proxy on a Debian 13 Trixie machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian 13 Trixie is fully […]

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How to Install and Configure Caddy Web Server on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Configure Caddy Web Server on RHEL 8

Caddy is a modern, open-source web server written in Go that automatically provisions and renews TLS certificates via Let’s Encrypt. Unlike Apache or Nginx, Caddy requires almost no manual TLS configuration, making it an excellent choice for developers who want HTTPS out of the box. On RHEL 8, Caddy is not available in the default […]

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How to Configure strongSwan IPsec VPN on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure strongSwan IPsec VPN on Debian 13

Introduction Deploying configure strongswan ipsec vpn on a Debian 13 Trixie machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need a registered […]

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How to Configure Nginx Load Balancing on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx Load Balancing on RHEL 8

Load balancing distributes incoming client requests across multiple backend servers, preventing any single server from becoming a bottleneck and improving both throughput and fault tolerance. Nginx’s built-in load balancing is highly capable and available in the open-source version without any additional modules for most common use cases. On RHEL 8, you can configure Nginx to […]

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