DNS
How to Setup Your Own DNS Server on Ubuntu & Debian
A DNS server is a computer that acts as a translator between the IP address and the domain name. It…
Category: Network Services
SSH
Best way to Manage SSH Hosts and Private Keys
As a system administrator, you deals regularly with multiple remote systems. You need to SSH systems multiple times during your…
SSH
SSH – permissions are too open.
I have launched a new Linux instance in my AWS account and downloaded the private key file. As we all…
SSH
A Guide to Install or Update OpenSSH Server on Debian.
OpenSSH is the most popular ssh server for Linux-based systems. It is used to connect the ssh server securely from…
Security
How to Deny/Allow Access for Users & Groups in OpenSSH
For security purposes many times we required to restrict or allow for SSH access for specific Users or Groups. To…
FTP
How to Download and Upload Files using FTP Commands
FTP (File Transfer Protocol) is widely recognized as a premier method for efficiently transferring files between different systems. Utilized extensively…
Security
Disabling Root SSH Login and Creating a Sudo User: Linux Server Security
One of the most important aspects of running a Linux server is ensuring that it is secure. This means protecting…
DNS
What is Google Apps MX Records for DNS ?
MX records in DNS are used to route emails to correct mail servers and properly send to correct destination server.…
Network Services
Setting Up the HTTP Proxy on Linux: An Essential Guide
In the interconnected world of today, networking plays a crucial role in our digital lives. One essential aspect of networking…
DHCP
The Ultimate Guide to DHCP Server Setup on CentOS/RHEL & Fedora
Configuring a Dynamic Host Configuration Protocol (DHCP) server on CentOS or Red Hat Enterprise Linux (RHEL) systems is a fundamental…