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
    Question

    How to prevent FileZilla or any FTP Client program from access to my server?

    3 answers8 days agoBy sittiphansittisak
    Security
    Apps

    Twingate CLI

    9 days agoBy Twingate Labs
    SecurityVPN
    Tutorial

    How To Secure Your Site in Kubernetes with cert-manager, Traefik, and Let’s Encrypt

    13 days agoBy Kristin Davidson
    KubernetesLet's EncryptSecurity
    Question

    Attack Detected - Blocked because of an intrusion attack

    2 answers20 days agoBy 3651b82d7cbc4ab496de4c899906c
    DigitalOcean DropletsNginxSecurity
    Question

    Spaces CDN DoS protection, bandwidth and limits

    1 answer22 days agoBy odarriba1
    BillingSecurityDigitalOcean Spaces
    Tutorial

    How To Generate a Resource Identifier with Checksum

    24 days agoBy rkoli
    APIJavaScriptNode.jsSecurity
    Question

    How safe is running doctl inside a kubernetes container?

    No answers yet24 days agoBy nicoskaralis
    DigitalOcean Managed KubernetesSecurity
    Tutorial

    How To Protect SSH with Fail2Ban on Rocky Linux 9

    30 days agoBy Alex Garnett
    FirewallLinux BasicsRocky LinuxRocky Linux 9Security
    Tutorial

    How To Set Up Password Authentication with Nginx on Rocky Linux 9

    30 days agoBy Alex Garnett
    NginxRocky LinuxRocky Linux 9Security
    Tutorial

    How To Protect an Nginx Server with Fail2Ban on Rocky Linux 9

    30 days agoBy Alex Garnett
    FirewallNginxRocky LinuxRocky Linux 9Security
    Question

    SSL Error Using Reserved IP Address

    1 answer30 days agoBy Adam Tuffin
    ApacheDigitalOcean DropletsSecurity
    Question

    Lets encrypt challange fails

    1 answer1 month agoBy Daniel Rosenberg
    Initial Server SetupSecurity
    Question

    Change Root Password is not Working

    1 answer1 month agoBy f795ec780adc4fc5aab1c267a1
    DigitalOcean DropletsDigitalOcean FunctionsSecurity
    Question

    Limit App access

    Accepted Answer Available
    1 answer2 months agoBy LittleDarkBlueSquid
    DigitalOcean App PlatformSecurity
    Question

    Does DO provide an HSM (Hardware Security Module) for storing certificates

    1 answer2 months agoBy robertbecker
    Security
    Tutorial

    How To Secure Nginx with Let's Encrypt on Rocky Linux 9

    2 months agoBy Alex Garnett
    Let's EncryptNginxRocky LinuxRocky Linux 9Security
    Tutorial

    How To Set Up a Firewall Using firewalld on Rocky Linux 9

    2 months agoBy Alex Garnett
    FirewallRocky LinuxRocky Linux 9Security
    Tutorial

    How to Set Up SSH Keys on Rocky Linux 9

    2 months agoBy Alex Garnett
    Getting StartedLinux BasicsRocky LinuxRocky Linux 9SecuritySystem Tools
    Tutorial

    How To Set Up a Firewall with UFW on Debian 11

    2 months agoBy Hazel Virdó, Brian Boucheron, Kathleen Juell, Kong Yang
    DebianDebian 11FirewallNetworkingSecurity
    Tutorial

    How To Set Up a Firewall with UFW on Debian 10

    2 months agoBy Hazel Virdó, Brian Boucheron, Kathleen Juell
    SecurityFirewallNetworkingDebianDebian 10