security

Como configurar as chaves SSH no Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

Como configurar as chaves SSH no Ubuntu 16.04

O SSH, ou shell seguro, é um protocolo criptografado usado para administrar e se comunicar com servidores. Ao trabalhar com um servidor Ubuntu, existem boas chances de você gastar a maior parte do seu tempo em uma sessão de terminal conectada ao seu servidor através do…

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How To Setup DNSSEC on an Authoritative BIND DNS Server — step-by-step Security tutorial on Progressive Robot

How To Setup DNSSEC on an Authoritative BIND DNS Server

We all know that DNS is a protocol which resolves domain names to IP addresses, but how do we know the authenticity of the returned IP address? It is possible for an attacker to tamper a DNS response or poison the DNS cache and take users to a malicious site with the legitimate domain name in the address bar.

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How To Use OPIE to Get One-Time Passwords for FreeBSD 10.1 — step-by-step Linux tutorial on Progressive Robot

How To Use OPIE to Get One-Time Passwords for FreeBSD 10.1

In this tutorial, you will learn how to generate and use one-time passwords to log in to your remote FreeBSD server. You can pregenerate one or more one-time passwords when you’re in a safe location, and save them for later when you access your server from a less secure location. That way, even if your one-time password gets logged, it won’t ever be useful to an attacker.

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How To Use Tripwire to Detect Server Intrusions on an Ubuntu VPS — step-by-step Linux tutorial on Progressive Robot

How To Use Tripwire to Detect Server Intrusions on an Ubuntu VPS

Although it is possible to guard your server environment against attacks, it is important to be able to detect whether an intruder does manage to compromise your security. Tripwire is a tool that can be used to detect changes in the filesystem that may indicate that an unauthorized person has entered and modified files. In this guide, we will discuss how to install and configure tripwire on an Ubuntu 12.04 VPS.

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Configuración inicial del servidor con Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Configuración inicial del servidor con Ubuntu 20.04

Cuando crea por primera vez un nuevo servidor Ubuntu 20.04, debe realizar algunos pasos de configuración importantes como parte de la configuración básica. Estos pasos aumentarán la seguridad y utilidad de su servidor, y le brindará una base sólida para las siguientes…

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Как настроить ключи SSH в Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Как настроить ключи SSH в Ubuntu 18.04

SSH (secure shell, безопасная оболочка) представляет собой шифрованный протокол для администрирования и взаимодействия между серверами. Во время работы с сервером Ubuntu вы, скорее всего, будете проводить большую часть времени в вашем терминале, подключенном через SSH к вашему…

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