Articles about networking | UserComp.com

Configuring IPv6 Local Loopback Address: 2a00:da10:f218:9ff0::1/80

This article explains how to configure the IPv6 local loopback address 2a00:da10:f218:9ff0::1/80. Learn how to set up this address on your system and display it correctly.

Configuring Public IPv6 Address 2a00:da10:f218:9ff0::1 for Local Loopback

This article explains how to configure a public IPv6 address (2a00:da10:f218:9ff0::1) for use in local loopback mode, as shown in the provider interface: 2a00:da10:f218:9ff0::1/80. Follow the steps below to set up this IP address for local use.

Understanding SSH Reverse Tunnels: Finding the Connection Behind Server-Side Commands

In this tech support article, we will explain how to find the connection behind server-side SSH reverse tunnel commands using the 'ssh-R' command and 'ps netstat' commands.

Does Docker IPs NIC Bridging Work?

Understanding Docker IPs NIC bridging and how it connects two networks. Learn about certain hosts and their roles in this setup.

Why Does a Virtual Machine Show a Unique MAC Address After Changing Network Settings?

When changing network settings on a virtual machine, the host MAC address may appear instead of the virtual machine's original MAC address. This article explains why this happens and how to resolve the issue.

Managing Outgoing Connections with Hostnames on macOS using Firewalls like Little Snitch

Learn how to manage outgoing network connections with hostnames on macOS using firewalls like Little Snitch for fine-grained control.

Understanding IP Addresses: Accessing Hosts in Two Different Subnets

Learn how to grant access to a host with an IP address in one subnet to another host in a different subnet using TCP/IP protocol.

2.4GHz Network Unreachable: How to Access Devices with Continued Get Message

Learn how to access devices connected to a 2.4GHz network despite the 'Continue get message' notification. This article provides a solution for users experiencing issues with multiple devices.

Forwarding NMEA0183 Traffic from One Host to Another on Different Ports

This article explains how to forward NMEA0183 traffic from one host (192.168.11.100) to another (192.168.11.110) using different ports.

Understanding Networking: Sensible Meaning of Hostnames and IP Addresses

In the process of learning networking, I came across some confusing IP addresses and hostnames. Let's clarify the meaning of local IP addresses and hostnames, such as 10.0.0.1 for routers and 172.17.xx.x for computers.

IPTables: NAT Source Address Bridge Interface on Linux

This article explains how to configure IPTables to use a bridge interface as the source address for Network Address Translation (NAT).

Smooth Upgrade Experience with Unifi USG: A New Addition to the Dream Machine

The upgrade process of replacing a specified USG with a new Unifi USG in a Dream Machine setup went smoother than expected.

Clearing the Four Least Significant Bits of a MAC Address for Virtual SSID Setup

Learn how to clear the four least significant bits of a MAC address for setting up a Virtual SSID using hostapd. Follow this step-by-step guide.

NAT Configuration for Multi-OS Network: Linux, Windows, and POS

Learn how to configure Network Address Translation (NAT) for a multi-computer network with a Linux PC, a Windows VM, and a POS system.

Linux: Docker Compose - Zabbix Host Ping: Container Not Responding in Another Bridged Docker Network

In a Docker environment running on a Linux host with two Docker networks, Zabbix fails to ping a container when both containers are in different bridged networks. This article provides an overview and suggested solutions to resolve the issue.

Windows 11 (ASUS B550M-WIFi) - Realtek NIC Causing Intermittent Internet Disconnects?

Users of Windows 11 on ASUS B550M-WIFi motherboards report intermittent internet disconnects. This issue might be related to the Realtek Network Interface Controller (NIC). In this article, we'll discuss possible solutions.

Port Forwarding Works with Wi-Fi: Liberate TCP/UDP Ports

Learn how to set up port forwarding on your Wi-Fi network to access remote computers or services using TCP and UDP ports. Follow these steps to configure your router and secure your connection.

Setting up SSL Certification for a NAS Media Server Inside CGNAT with DNS Access

A NAS (Network Attached Storage) media server running an interface app without security measures can be vulnerable. Learn how to set up SSL certification for a NAS media server inside CGNAT using DNS access.

TCP Server Not Sending ACK Response for PSH, ACK Packets in C++ Linux

While implementing a TCP server socket in C++ on a Linux machine, connected to another device for high-rate data streaming (800Hz), we encountered an issue where the server was not sending ACK responses for PSH and ACK packets. In this article, we will discuss the possible causes and solutions for this issue.

L2 WiFi-to-Ethernet Bridge: Drops Internet Connection on Ubuntu Server 23.10

This article explains how to troubleshoot and resolve issues with L2 WiFi-to-Ethernet Bridge connections dropping on Ubuntu Server 23.10.

Windows 10: Opening Socket Delay with IPv6 in Python

This article explains the issue of opening socket delay when making HTTP POST requests using Python on a Windows 10 machine with IPv6 enabled.

Bridge Mode: Configuring Docker, thingNAT, and VirtualBox for Host Communication

Learn how to configure Docker, thingNAT, and VirtualBox in Bridge Mode for seamless host communication. Improve your tech setup today.

Fixing Bridged VirtualBox Ethernet Setup: Connect Two Real Ethernet Devices in Windows 10 & Ubuntu Guest System

Learn how to configure a bridged network connection for two Ethernet interfaces in a Windows 10 host and Ubuntu guest system using VirtualBox.

Access Global Internet on iPhone via Mac Mini

Learn how to share your Mac Mini's Ethernet connection with your iPhone and access the global internet. Follow these steps to configure Wi-Fi on your Mac Mini and connect your iPhone.

Win10 Home: Network Devices Not Pinging Subnetwork Devices (Actiontec T3200M, Asus RT-N66U)

Users of Win10 Home report issues with pinging subnetwork devices connected to an Actiontec T3200M ISP modem/router and an Asus RT-N66U wireless subnetwork router. This article provides potential solutions.

OPNsense Hub Configuration for Blocking Communication between Two LANs

Learn how to configure OPNsense to block communication between two LANs, ensuring network security for different tenants.

Win10 Home: Net Network Devices Not Pinging Subnetwork Devices - Asus RT-N66U and Actiontec T3200M

Users of Windows 10 Home encounter issues with subnetwork devices not responding to pings when using Actiontec T3200M and Asus RT-N66U routers. This article provides potential solutions to help resolve the ping issue.

Connecting Two Linux Computers Behind NAT Using E2C: A Step-by-Step Guide

Learn how to connect two Linux computers behind NAT using Amazon Elastic Load Balancer (E2C) as a jumphost. Follow this step-by-step guide to set up REST APIs on both boxes and establish a secure connection.

Creating a Network Bridge with wlan0, eth1 and connecting second eth0 device

Learn how to create a network bridge between wlan0, eth1, and connect a second eth0 device on Ubuntu 20.04 and Nvidia Jetson.

Accessing a Web Server with an Ethernet Cable: A Step-by-Step Guide

Learn how to connect your laptop to a web server using an Ethernet cable. This step-by-step guide covers the basics for both Linux and Windows users, ensuring a smooth setup.

Understanding User Outer without Gateway: Sending Packets Directly

Users may be confused about the role of gateways in sending packets between networks. This article explains the concept of user outer without gateway and how it allows direct packet sending.

Sending Wake-on-LAN Packets to a Windows 11 Laptop or MacBook

Learn how to send Wake-on-LAN packets to a Windows 11 laptop or MacBook using a Python script. This article explains the process and provides a simple script for initializing the magic packet.

Troubleshooting Network Cat Communication Between Linux and Windows Computers

This article provides solutions for enabling network cat communication between a Linux and Windows computer. While both systems can connect via Ethernet, one (Windows) refuses to send or receive data.

Understanding Netstat-b: Curious Connections and System Pleas

Learn about the Netstat-b command and its use in identifying active connections on a Windows system. Discover what it means when someone asks 'curious connections upon using netstat-b please?'

Configuring VLAN and Part Bridge on a Linux Server (4.9.337)

Learn how to configure VLAN and part bridge on a Linux server running version 4.9.337. This article assumes you have a private server on the internet that serves as a router, Wi-Fi access point, and many other things.

Finding Optimal MTU Size Using Win11 PowerShell Script: A More Reliable Approach

In this tech support article, we'll explore an alternative approach to finding the optimal MTU size using a PowerShell script on Win11, as the ping command may not provide accurate readings.

Troubleshooting Inspircd: Not Assigned Requested Address

This article provides a solution for the Inspircd IRC server not being able to assign the requested address. Compiled on Jun 8, 2024, this issue may occur due to various reasons such as firewall settings or network configuration. Follow the steps below to resolve the issue.

Finding Optimal MTU Size using PowerShell Script on Win11: A Better Approach

In this tech support article, we will discuss an issue where using a PowerShell script to find the optimal MTU size on Win11 via the ping command was not providing accurate readings. We will explore a better approach to determining the optimal MTU size.

Decreasing Probe Size Stops Audio in Corporate WAN: A Tech Support Issue

Learn how to resolve an issue where decreasing probe size in a corporate WAN setup results in stopped audio. This tech support article offers suggestions for Linux, Windows, and MacOS users.

Laptops Lose Internet Connection Momentarily When Another Device Connects to Router

Some users report that their laptop devices lose their internet connection momentarily when another device connects to the same router. This issue can occur on various operating systems and is often resolved by adjusting network settings or updating the router firmware.

Resolving Extreme Lypeculi Network Issues with MSI B650M-A WiFi Motherboard

Experiencing extreme network issues with your desktop PC, specifically the MSI B650M-A WiFi motherboard? Learn how to troubleshoot and resolve Wi-Fi and Ethernet connection problems.

Newly Connected Devices Not Connecting on Ubuntu 24.04 Router

Users of Ubuntu 24.04 servers running a netlink Gpon router have reported issues with newly connected devices not connecting to the network. This article provides a potential solution to help resolve the problem.

Setting Up One Router for Two Subnets: A Beginner's Guide

Learn how to set up a router for two separate subnets, allowing two different LANs to connect. This beginner-friendly guide covers the basics of routing and IP addresses.

Raspberry Pi: Outbound Connections Blocked - Recent Departed IP Address Changed

A user reports an issue with their Raspberry Pi running RaspberryOS12 (Debian Bookworm), where an outbound connection from IP address 172.16.1.17 was working fine but has been replaced by a new IP address 192.168.0.117. This article aims to help diagnose and resolve the issue.

Unable to Ping Hyper-V Host from Ubuntu VM: A Networking Issue

This article discusses a networking issue where an Ubuntu VM hosted on Hyper-V is unable to ping the Hyper-V host. Possible solutions include disabling firewalls, assigning static MAC addresses, and checking network adapter settings.

Big Ping Delays Affecting Specific Webpages: GW01-N.contabo Issue

Last week, we encountered unexpected delays of approximately 150ms on certain webpages, primarily occurring evenings around 19:00 GMT+2. Typically, delays were within the normal range of 20ms. To address this issue, we ran diagnostics on our GW01-N server at Contabo.

Understanding Private IP Addresses in Traceroute

Learn about the role of private IP addresses in Traceroute and why they may not be displayed in the output.

Resolving Networking Issues: Speed Drops with ISP Modem/Router Bridge Mode

Users experiencing speed drops when connecting their home network using ISP modem/router bridge mode, a PFSense box, and a Netgear GS324TPS350 Switch. Learn how to troubleshoot and resolve this issue.

Systemd-resolved: Successfully Requests IP Addresses on Computer, Correctly Resolves FQDNs

This article discusses an issue where Systemd-resolved successfully requests IP addresses on a computer and correctly resolves Fully Qualified Domain Names (FQDNs) to IP addresses.

PFsense: Fake Subnet and IPsec Tunnel Mapping

Learn how to configure PFsense for IPsec tunnel mapping with a fake subnet. This article explains the process of setting up a remote network (172.x.x.x/24) with a local network (10.x.x.x.x/16), ensuring no changes to the remote configuration are necessary.

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