In a situation where we have one public IP address and we have many domains directed to that IP address, it is worth considering spreading the traffic to other servers. Proxmox, which allows you to create a pair of virtual machines, is perfect in such a situation. In my case, each virtual machine is separated […]
There are situations when we need to increase the encryption level on the old system – according to the PCI audit requirements. However, the old system is no longer supported, so updating the encryption level is not possible. This is not a recommended solution, because we should try to transfer the application to a new […]
Nowadays, many bots or hackers look for port 22 on servers and try to log in. Usually, the login attempt is made as the standard linuxe root user. In this short article, I will describe how to create a user that will be able to log in as root and change the default ssh port […]
iftop is a command-line tool for real-time network bandwidth monitoring. It displays a continuously updated list of network connections along with the amount of data transferred between them. Connections are shown in a table format and can be sorted by bandwidth usage. iftop provides various filtering options, allowing you to limit the output to specific […]
A very good tool for securely copying files via the ssh protocol between machines is scp. It allows you to transfer files to the target machine as well as download from a given source. The tool is usually built into the system so it works on many distributions. Below I will present how you can send and download […]
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