Linux

How to Configure and Troubleshoot Virtual Hosts in Apache HTTPD

In this post, we will learn how to conﬁgure Apache httpd to provide IPbased and name-based virtual hosts. Virtual Hosts …

This post explains how to display, change, and switch target(runlevel) in systemd on a CentOS/RHEL 7 machine. Display …

Question: How to rotate systemd-journald log under /var/log/journal/*/ or /run/log/journal/*/? journald logs can be …

What Is SMB? Server Message Block (SMB) is the standard file-sharing protocol for Microsoft Windows servers and clients. …

In this post, we will learn how to mount an SMB share with the multiuser mount option, using password-based …

Introduction To ISCSI The Internet Small Computer System Interface (iSCSI) is a TCP/IP-based protocol for emulating a …

What is NFS? The Network File System (NFS) is a network file system commonly used by UNIX systems and network-attached …

The NFS protocol transmits data in clear text over the network. Furthermore, the server relies on the client to identify …

In this post we will explain how to conﬁgure a secure, caching nameserver using the unbound DNS server. Caching Name …

In this post, we will outline steps to configure a CentOS/RHEL 7 server to transmit all emails through an …

Postfix is a powerful but easy-to-configure mail server. It is the default mail server in Red Hat Enterprise Linux 7. …