by Satish Kumar | Feb 12, 2021 | Ubuntu
So you have installed minimal setup of Ubuntu, you have setup SSH with public key authentication and disabled password authentication, and you have also allowed only single non-root user to access the server. You also configured a firewall, spending an entire night...
by Satish Kumar | Feb 11, 2021 | Ubuntu
It is said that the best way to improve server security is to reduce the attack surface. Network communication in any system happens with the help of logical network ports, be it TCP ports or UDP ports. One part of the attack surface is the number of open ports that...
by Satish Kumar | Feb 10, 2021 | Ubuntu
VPN enables two or more systems to communicate privately and securely over the public network or Internet. The network traffic is routed through the Internet, but is encrypted. You can use VPN to set up a secure connection between two datacenters or to access office...
by Satish Kumar | Feb 9, 2021 | Ubuntu
Transmission Control Protocol and Internet Protocol (TCP/IP) is a standard set of protocols used by every network-enabled device. TCP/IP defines the standards to communicate over a network. TCP/IP is a set of protocols and is divided in two parts: TCP and IP. IP...
by Satish Kumar | Feb 8, 2021 | Ubuntu
When an application becomes popular, it sends an increased number of requests to the application server. A single application server may not be able to handle the entire load alone. We can always scale up the underlying hardware, that is, add more memory and more...
