Using a firewall is as much about making intelligent policy decisions as it is about learning the syntax. Firewalls like iptables are capable of enforcing policies by interpreting rules set by the administrator. However, as an administrator, you need to know what types of…
PF is a renown firewall application that is maintained upstream by the security-driven OpenBSD project. It is more accurately expressed as a packet filtering tool, hence the name, and it is known for its simple syntax, user-friendliness, and extensive features. In this tutorial you’ll build a firewall from the ground up on a FreeBSD 12.1 server with PF. You’ll design a base ruleset that can be used as a template for future projects.
O SSH, ou shell seguro, é a maneira mais comum de administrar servidores Linux remotos. Embora o daemon permita a autenticação baseada em senha, expor uma conta protegida por senha na rede pode tornar seu servidor vulnerável a ataques de força. Neste guia, demonstraremos como configurar seu servidor com chaves SSH, que é o método de autenticação recomendado. É muito mais difícil para os invasores contorná-lo, tornando o seu mecanismo de login mais seguro.
TLS, or transport layer security, and its predecessor SSL, which stands for secure sockets layer, are web protocols used to wrap normal traffic in a protected, encrypted wrapper. Using this technology, servers can send traffic safely between servers and clients without…
In this guide, we will show you how to set up a self-signed SSL certificate for use with an Nginx web server on an Ubuntu 18.04 server.
the cloud provider Volumes are scalable, SSD-based block storage devices. This tutorial covers how to create a passphrase-protected encrypted disk on your Volume containing a file systemm anually mount the encrypted file system for use, unmount and relock it when you’re done, and automatically mount the file system when the Droplet boots.
Edit the sudoers file safely with visudo. Validate syntax, grant least-privilege with fragments, recover from errors, and harden Linux.
Автор выбрал Electronic Frontier Foundation Inc для получения пожертвований в рамках программы Write for DOnations. Серверы Linux часто управляются удаленно с…
In this tutorial, you will secure a website served by Nginx with an Origin CA certificate from Cloudflare and configure Nginx to use authenticated pull requests. The advantages of using this setup are that you benefit from Cloudflare’s CDN and fast DNS resolution while ensuring that all connections pass through Cloudflare. This prevents any malicious requests from reaching your server.
SimpleSAMLphp ist eine Open-Source-basierte PHP-Authentifizierungsanwendung, die Unterstützung für SAML 2.0 als Dienstanbieter (SP) oder Identitätsanbieter (IdP)…
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