Cooper Reagan
539 posts
how to install and configure firewalld on debian 12
What you will read?1 Install FirewallD2 Enable and Start the Service3 Check Zones and Default Zone4 Allow SSH to Prevent Lockout5 Open Web and Custom Ports6 Apply Permanent Configuration7 Bind Interfaces and Set Default Zone8 Use Rich Rules for Granular Control9 Enable Masquerading and Port Forwarding (NAT)10 Inspect, Log, and Test11 Backup and Restore Configuration12…
How to secure ubuntu 25.04 with firewalld zones and rules
What you will read?1 Prepare the system and check UFW2 Install and start FirewallD3 Runtime vs permanent changes4 Inspect zones and set the default zone5 Bind interfaces to zones6 Allow essential services safely7 Open custom ports8 Create rich rules (IP-based allow/deny)9 Enable logging for denied packets10 Masquerading (NAT) and port forwarding11 IPv6 considerations12 Panic mode…
how to configure firewalld on redhat rhel
What you will read?1 Verify and start FirewallD2 Understand runtime vs permanent3 Inspect zones and active zone4 Assign interfaces and set default zone5 Allow common services safely6 Open specific ports or ranges7 Restrict by source IP8 Add rate limits and logging9 Enable masquerading (NAT)10 Configure port forwarding11 Create a custom service12 Manage ICMP (ping) rules13…
How to configure nginx reverse proxy on centos stream 9
What you will read?1 Step 1: Verify OS and update packages2 Step 2: Install and start Nginx3 Step 3: Allow HTTP/HTTPS in firewalld4 Step 4: Prepare SELinux rules5 Step 5: Create a basic reverse proxy6 Step 6: Validate syntax and reload Nginx7 Step 7: Enable HTTPS with Let’s Encrypt8 Step 8: Harden TLS and headers…
How to install postgresql on Centos stream 9
What you will read?1 Step 1: Update System Packages2 Step 2: Install the PostgreSQL Module3 Step 3: Initialize the Database4 Step 4: Start and Enable PostgreSQL5 Step 5: Access PostgreSQL6 Step 6: Create a Database and User7 Step 7: Enable Remote Connections (Optional) PostgreSQL is a powerful open-source relational database system that powers many enterprise…
How to install postgresql on Debian 12
What you will read?1 Step 1: Update System Packages2 Step 2: Install PostgreSQL3 Step 3: Enable and Start the Service4 Step 4: Switch to PostgreSQL User5 Step 5: Create a New Database and User6 Step 6: Allow Remote Connections (Optional) PostgreSQL is a powerful open-source relational database system widely used for applications, APIs, and enterprise…
how to install v2ray websocket tls on debian 12
What you will read?1 Step 1 — Prerequisites and DNS2 Step 2 — Update Debian 12.11 and install base tools3 Step 3 — Install Nginx4 Step 4 — Prepare variables5 Step 5 — Create HTTP server block and webroot6 Step 6 — Issue Let’s Encrypt TLS certificate (webroot)7 Step 7 — Install V2Ray core8 Step…
how to install postgresql on ubuntu 25.10
What you will read?1 Update system and prerequisites2 Install PostgreSQL from Ubuntu repository3 Optional: Install latest PostgreSQL from PGDG4 Check and manage the PostgreSQL service5 Set the postgres superuser password6 Create an application role and database7 Configure listen address and authentication8 Open the firewall (UFW) for PostgreSQL9 Verify remote connectivity10 Backup and restore essentials11 Minor…
How to Setup Cron Jobs on Red Hat 9/8
What you will read?1 Update Your System2 Install and Enable Cron3 Understand the Cron Syntax4 Add or Edit Cron Jobs5 Practical Examples6 Manage and Troubleshoot7 Reliable Automation for RHEL Keeping your server tasks automated helps maintain performance, security, and uptime. On Red Hat Enterprise Linux (RHEL) 9 and 8, the built-in cron scheduler can run…