Ubuntu 20.04で認証局(CA)をセットアップおよび設定する方法
Ubuntu 20.04で実行するプライベート認証局は、クライアントとサーバー間の暗号化された接続を必要とするプログラムを設定、テスト、および実行できます。プライベートCAを使用して、インフラストラクチャ内のユーザー、サーバー、または個々のプログラムとサービスの証明書を発行できます。プライベートCAは、すべての開発、ステージング、および本番環境で同様のアーキテクチャと設定を使用できるようにするのに役立ちます。
Ubuntu 20.04でOpenVPNサーバーをセットアップ・設定する方法
OpenVPNは、公開インターネット上でプライベートネットワークを安全に構築したり参加したりできるようにするオープンソースの仮想プライベートネットワーク（Virtual Private Network: VPN）アプリケーションです。 このチュートリアルでは、Ellipic Curve Cryptography（ECC）を使用して、Ubuntu 20.04 （Focal server）にOpenVPNをインストールして設定する方法を学びます。 また、Windows、macOS、iOS、Android、LinuxクライアントをVPNに接続する方法も学びます。
How To Set Up Multi-Factor Authentication for SSH on CentOS 7
This article will go over how to enable SSH authentication using an OATH-TOTP app in addition to an SSH key. Logging into your server via SSH will then require two factors across two channels, thereby making it more secure than a password or SSH key alone.
![Como configurar a autenticação por senha com o Apache no Ubuntu 18.04 [Início Rápido] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-set-up-password-authentication-with-apache-on-ubuntu-18-04-quickstart-pt-86073-featured.png "Como configurar a autenticação por senha com o Apache no Ubuntu 18.04 [Início Rápido] 4")
Como configurar a autenticação por senha com o Apache no Ubuntu 18.04 [Início Rápido]
Este tutorial trará um passo a passo sobre como proteger ativos em um servidor Web Apache em execução no Ubuntu 18.04. O cumprimento desses passos dará segurança adicional para seu servidor, de modo que usuários não autorizados não possam acessar certas partes de sua…
So richten Sie SSH-Schlüssel unter CentOS 8 ein
SSH oder Secure Shell ist ein verschlüsseltes Protokoll zur Verwaltung und Kommunikation mit Servern. Wenn Sie mit einem CentOS-Server arbeiten, verbringen Sie wahrscheinlich die meiste Zeit in einer Terminalsitzung, die über SSH mit Ihrem Server verbunden ist. In diesem…
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…
How To Set Up vsftpd for a User’s Directory on Debian 10
FTP, short for File Transfer Protocol, is a network protocol that was once widely used for moving files between a client and server. It has since been replaced by faster, more secure, and more convenient ways of delivering files.
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.
How To Use Duplicity with GPG to Securely Automate Backups on Ubuntu
Duplicity is a simple backup solution that can be used to backup data from a VPS instance to another VPS or a local machine. In this guide, we will demonstrate how to install duplicity on Ubuntu and configure it to perform automated backups.
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.
