Security

Any server on a public network can become the target of hackers. Thus, knowing how to ensure a system’s security is an important responsibility for anyone working with a server. From initial server setup to scaling and server maintenance, security is a vital and ever-changing consideration.

featured tutorialHow To Install Suricata on Ubuntu 20.04
Suricata is a Network Security Monitoring (NSM) tool that uses sets of community created and user defined signatures ...

Jamon Camisso • Published on October 25, 2021 · Updated on October 22, 2021

featured tutorialUFW Essentials: Common Firewall Rules and Commands
UFW (uncomplicated firewall) is a firewall configuration tool that runs on top of iptables, included by default withi...

Mitchell Anicas, and Erika Heidi • Published on August 20, 2015 · Updated on December 15, 2021

featured tutorialHow to Set Up Squid Proxy for Private Connections on Ubuntu 20.04
Proxy servers are a useful way of caching or obfuscating web traffic. This means that web requests can be served from...

Alex Garnett • Published on January 6, 2022

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    English
    Tutorial

    How To Set Up a Firewall with UFW on Debian 10

    0 days agoBy Hazel Virdó, Brian Boucheron, Kathleen Juell
    SecurityFirewallNetworkingDebianDebian 10
    Question

    Block Countries using UFW or Fail2Ban? Or Block IP if login failed & outside exempt countries?

    2 answers5 days agoBy twc8ac35a8636
    ApacheDigitalOcean Cloud FirewallsSecurityUbuntu 22.04WordPress
    Tutorial

    How To Secure React Applications Against XSS Attacks with HTTP-Only Cookies

    8 days agoBy Amir Ghorbanian
    JavaScriptReactSecurityDocker
    Question

    If http requests are routed to https, does a bad security "score" for http matter?

    2 answers9 days agoBy SmallNavyBoat
    Security
    Tutorial

    How To Secure Nginx with Let's Encrypt on CentOS 7

    28 days agoBy Mitchell Anicas
    SecurityLet's EncryptNginxCentOS
    Tutorial

    How To Secure Nginx with Let's Encrypt on Debian 11

    28 days agoBy Alex Garnett
    NginxSecurityUbuntuUbuntu 22.04
    Question

    How to setup strongswan client on openwrt 22.03

    No answers yet1 month agoBy LovableDarkCyanShark
    FirewallNetworkingSecurityUNIX/LinuxVPN
    Tutorial

    How To Secure a Containerized Node.js Application with Nginx, Let's Encrypt, and Docker Compose

    1 month agoBy Kathleen Juell
    DockerSecurityNode.jsLet's EncryptUbuntu 18.04
    Tutorial

    How To Secure Apache with Let's Encrypt on Debian 11

    2 months agoBy Kathleen Juell, Mark Drake, Erika Heidi, Jeanelle Horcasitas
    ApacheDebian 11Let's EncryptSecurity
    Tech-talk

    Securing the Supply Chain for Kubernetes

    2 months agoBy Bikram Gupta
    DigitalOcean Managed KubernetesKubernetesSecurityTech Talks
    Tutorial

    How Fail2Ban Works to Protect Services on a Linux Server

    2 months agoBy Justin Ellingwood, Alex Garnett
    SecurityFirewallMonitoringConceptual
    Tutorial

    How To Protect an Nginx Server with Fail2Ban on Rocky Linux 8

    2 months agoBy Alex Garnett
    FirewallNginxRocky LinuxRocky Linux 8Security
    Tutorial

    How To Protect an Nginx Server with Fail2Ban on Ubuntu 20.04

    2 months agoBy Alex Garnett
    FirewallNginxSecurityUbuntuUbuntu 20.04
    Tutorial

    How To Protect an Nginx Server with Fail2Ban on Ubuntu 22.04

    2 months agoBy Alex Garnett
    FirewallNginxSecurityUbuntuUbuntu 22.04
    Tutorial

    How To Set Up Password Authentication with Nginx on Rocky Linux 8

    2 months agoBy Alex Garnett
    NginxRocky LinuxRocky Linux 8Security
    Tutorial

    How To Host a Website Using Cloudflare and Nginx on Ubuntu 22.04

    2 months agoBy anondon
    DNSNginxSecurityUbuntu 22.04
    Question

    Cleaning up Cypto Miner Infection on ubuntu 18 LTS

    2 answers2 months agoBy support
    DigitalOcean DropletsSecurityUbuntu 18.04
    Question

    Cant Secure MongoDb need help

    No answers yet2 months agoBy b3699d04c0e6-4b4f-afaf-3bd295
    FirewallMongoDBNetworkingSecurityUbuntu 20.04
    Question

    ERR_SSL_PROTOCOL_ERROR when making a request to my servers droplet IP

    1 answer2 months agoBy BubblyTurquoiseShrimp
    APIDigitalOcean DropletsInitial Server SetupSecurity
    Question

    UPdating the servers Erased Nginx and caused issues, please help

    1 answer2 months agoBy b3699d04c0e6-4b4f-afaf-3bd295
    NetworkingNginxSecurity