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After installing Fedora Server 41 (DVD) on VirtualBox 7.1.4 using standard procedures, proceed with configuring the SSH server. Configure the SSH Server Install the OpenSSH Server Package sudo dnf install openssh-server Activate and Enable the SSH Service Start the service and configure it to launch automatically at boot: sudo systemctl start ...

In the previous article, we discussed the concept of a "pump" in programming and its various applications, but without a practical demonstration. This article presents a UDP communication demo that implements text messaging and file transfer capabilities within a local network, similar to a LAN messenger. While the functionality isn't ...

Prerequisites Before proceeding, ensure you have a Tailscale account. You will need to generate a reusable Auth Key from the Tailscale admin console to facilitate the automated node setup. LXC Container Preparation Deploy a Debian LXC template in Proxmox. Before starting the container, you must grant it access to the TUN device to allow Tailsca ...

Changing System Language to English After a minimal Debian installation with Chinese locale selected, you may encounter garbled characters in error messages and system prompts. Switch the default language to English using root privileges: export LANG=en_US.UTF-8 dpkg-reconfigure locales During the locale configuration: Select en_US.UTF-8 UTF- ...

To determine which processes are using specific network ports on a Windows system, you can use built-in command-line tools. This guide demonstrates how to identify port usage and associate it with running applications. Using Command Prompt Launch Command Prompt by perssing Win+R, typing "cmd", and pressing Enter. Display Network Conne ...

Cisco Catalyst & Integrated Services Router Checks Core System & Inventory Overview transport preferred ssh terminal no length display running-config! Displays full active device configuration show inventory! Displays system diagnostic details show module status show env temp show env fan show env power show processes cpu sorted 1min sh ...

Private IP Address Ranges RFC 1918 defines three IP address blocks reserved for private networks: Class A: 10.0.0.0 – 10.255.255.255 Class B: 172.16.0.0 – 172.31.255.255 Class C: 192.168.0.0 – 192.168.255.255 These addresses are not routable on the public internet and can be used internally without ISP registration. Docker Networking Issues A ...

Basic Concepts Load balancing solutions encompass various approaches including DNS-based domain rotation, client-side load distribution, application-layer load balancing, and IP address-based scheduling. This document focuses on LVS, a layer-4 load balancer built upon transport protocols like TCP/UDP. LVS stands for Linux Virtual Server, repres ...

The java.net.URL class can parse a URL string and expose its components. To obtain the portocol and host, create a URL instanec and call getProtocol() and getHost(). import java.net.URL; public class UrlParser { public static void main(String[] args) throws Exception { URL endpoint = new URL("https://docs.oracle.com/en/java/&q ...

Setting Up a PPPoE Server on Ubuntu Environment Tested on: Ubuntu 14.04 32-bit Ubuntu 16.04 64-bit Ubuntu 20.04 64-bit Package Installation sudo apt-get update sudo apt-get install pppoe-server sudo apt-get install pppoe Configuration Files /etc/ppp/options sudo vim /etc/ppp/options Configuration content: ms-dns 8.8.8.8 ms-dns 8.8.4.4 async ...