Articles in Networking | UserComp.com

Setting up a Second Router as a Parasite Router: Forward Ports

Learn how to set up a second router as a parasite router and forward ports for personal devices. This guide covers the process for both Linux, Windows, and MacOS.

ASUS ZenWifi ET8 Router: Unknown Devices Connected Despite MAC Filtering with Starlink

Users report experiencing unknown devices connecting to their ASUS ZenWifi ET8 routers despite enabling MAC filtering with Starlink. This article provides potential solutions to resolve the issue.

Deep Dive into PORT Number Confusion: OS Node Packet Received Unexpectedly

In this tech support article, we delve into the confusion surrounding PORT numbers and unexpected OS node packets. Learn how to identify and resolve this issue.

Making DNSmasq Handle Dynamic IP Hostnames

Learn how to configure DNSmasq to handle dynamic IP hostnames, allowing your router's hostname to always point to its current IP address across different networks.

Omada Controller: Implementing Public Wi-Fi with rsyslog

Learn how to implement public Wi-Fi using rsyslog with the Omada Controller. Manage clients across regions, ensure secure network access.

NetDiscover Not Identifying Wi-Fi Devices in VMWare

This article discusses a common issue where NetDiscover fails to identify devices connected via Wi-Fi when running in a VMWare environment. Various workarounds and troubleshooting steps are suggested.

Setting Up Universal Home DNS for Network Access Control

Learn how to set up Universal Home DNS to manage network access for multiple devices in a human-friendly way, keeping them securely away from direct internet access.

Configuring NAT: Main Router and Two Secondary Routers - NAT Security Concerns

When setting up a NAT network with a main router and two secondary routers, it's crucial to consider security concerns. In this article, we discuss the necessary configurations for passing traffic between routers.

Configuring G-PON Routers as Media Converters for CCTV Signal Transmission

This article explains how to configure a few G-PON routers, such as Huawei HG8145v5 and ZTE routers, to operate in bridge mode as media converters for transmitting CCTV signals over fiber.

WAN Passthrough with Managed Switch: A Good Idea for ISP-Provided GPON?

Exploring the possibility and security implications of implementing WAN Passthrough with a managed switch in the context of an ISP-provided GPON setup.

Understanding Private IP Addresses: 172.16/12 Prefix

This article explains the 172.16/12 private IP address prefix, its use in local networks, and its differences from public IP addresses.

Understanding RFC1918 Private IP Address Ranges

This article explains the concept of RFC1918 private IP address ranges, including the 172.16/12 prefix. Learn about the other private IP address ranges and their significance in networking.

Connecting a Device to Another Subnet using a 3rd Device Proxy: A Solution for HTTPS Web Portal Access

Learn how to connect a device to another subnet using a third device as a proxy when unable to get an Ethernet cable connection but can access Wi-Fi.

ASUS Router Not Responding to DNS Queries during Zero-Tier VPN Installation

This article discusses a common issue faced during the installation of Zero-Tier VPN on an ASUS router, where the router fails to respond to DNS queries. It provides possible solutions to help troubleshoot and resolve the issue.

Setting Up Multiple Upstream Routers: A Comprehensive Guide

Learn how to correctly set up multiple upstream routers in your network topology, including a modem, OPNSense Router, L2 Managed Network Switch, various LAN clients, and another TP-Link Router.

Accessing Office Network Server with Public IP: A Case Study

In this tech support article, we explore a case where a user tries to access a server on an office network using a public IP address. We provide a step-by-step guide on how to handle this situation.

Saving Fixed IP Addresses in Batch: Cisco Switch Plink Command

Learn how to save the running-config of a Cisco switch with fixed IP addresses to an SFTP server using Plink in batch mode.

Understanding Packet Forwarding vs Local Delivery in Network Routing

When a packet is received by the Linux kernel, it goes through the pre-routing chain. The routing decision is made whether to forward the packet somewhere else or deliver it locally. In this article, we'll discuss the difference between packet forwarding and local delivery in network routing.

Possible Connection: Router 1 to Router 2 - Internet vs Intranet Access Time?

Two routers are in place, one for internet access and the other for intranet. Is it possible for Router 1 to access Router 2's intranet with a reliable connection and efficient access time? Let's explore the possibilities.

Troubleshooting NoDNSAAAA Response with Fortigate for IPv6 Homelan

Learn how to troubleshoot and resolve the NoDNSAAAA response issue when setting up IPv6 homelan with Fortigate.

Switch Hopping vs Router Switch: A Comparison for Networking

When configuring a network with multiple switches and routers, understanding the differences between switch hopping and router switching is essential. In this article, we'll discuss the pros and cons of each approach when connecting Router LAN to Switch A, Switch A to Switch B.

How to Add VLANs to a Non-VLAN Home Network: A Step-by-Step Guide

Learn how to add VLANs to a non-VLAN home network, enabling better network segmentation and security. Follow our step-by-step guide for Linux, Windows, and MacOS.

Sending Packet: Machine-to-Machine Local Network Broadcasts with Routers

In this tech support article, we will discuss how to send packet machine-to-machine local network broadcasts using routers. Let's assume machine B's IP and MAC addresses are known. Simplify the process by learning the necessary steps.

Handling Multiple Concurrent Requests to the Same Host using TCP

In this tech support article, we will discuss how to handle multiple concurrent requests to the same host using TCP. When a web server exposes port 80 with two endpoints, one returning dataset A and the other returning dataset B, an application may send two requests simultaneously. Let's explore ways to manage these concurrent requests effectively.

Configuring Cisco IOSXE Routers: Class-Based Service Policies and Queues for Torrent Traffic Control

Learn how to configure Cisco IOSXE routers to implement class-based service policies and queues for effective torrent traffic control, ensuring optimal internet performance for essential applications.

Forwarding TCP Requests with VPN: A Simple Guide for Server, Laptop, and Raspberry Pi

Learn how to forward TCP requests through a VPN connection on a server, laptop, and Raspberry Pi. Follow this step-by-step guide to set up VPN servers and clients, configure port forwarding, and secure your network connections.

FRITZ!Box Blocks Internet Access for IP, not MAC on LAN with ASUS Repeater in Media Bridge Mode

This article discusses an issue where a FRITZ!Box blocks Internet access for devices connected via a LAN port on an ASUS repeater configured in Media Bridge mode. The FRITZ!Box filters based on IP addresses instead of MAC addresses, resulting in connectivity issues. We provide solutions to resolve this problem.

Connecting Two Devices with a Maximum Safe Distance Using One Router and Streaming IP Camera

Learn how to connect two devices with a maximum safe distance using one router and an IP camera. Understand the maximum safe distance for CAT6 Ethernet cables and ensure seamless data streaming.

Understanding the Dependency of DHCP on IP Protocol

DHCP (Dynamic Host Configuration Protocol) is a network protocol used to dynamically assign IP addresses to devices on a network. However, DHCP relies on the IP protocol to function properly. In this article, we will discuss the dependency of DHCP on IP protocol and its implications.

Configuring SNMP on SonicFirewall with Ninja One

Learn how to configure SNMP on SonicFirewall using Ninja One, the SolarWinds tool. Follow these steps to set up SNMP and monitor your network.

Dedicated IP Behind CGNAT: Unexpected Monthly Fee

A user recently received an unexpected monthly fee for a Dedicated IP, which they thought would no longer be behind a Carrier-Grade NAT (CGNAT). Let's explore this scenario and discuss possible solutions.

Understanding Auto-configured Interfaces SLAAC (accept_ra1) on Non-Router Devices

This article explains the concept of Auto-configured Interfaces using Stateless Address Autoconfiguration (SLAAC) with the accept_ra1 option on non-router devices. It covers IPv6 specifications and the restrictions on using multiple external interfaces.

Securely Setting Up DDNS+Port Forwarding on a Home Hosting Website

Learn how to securely set up Dynamic DNS (DDNS) and port forwarding on your home hosting website. This guide covers the process for forwarding external requests to internal port 80 using port 8080.

Zywall ATP: Unable to Access Forwarded Devices via VPN (10.200.195.70)

This article provides a solution to the problem where devices in a specific subnet (10.200.195.0/24) cannot be accessed via a VPN connection (10.200.200.0/24) through Zywall ATP.

Troubleshooting Network Speed Issues with Multiple Devices on a Local Network

Learn how to diagnose and resolve network speed issues when using a local network with around 200 PCs connected through approximately 8 routers and around 30 devices experiencing slow download speeds.

Hiding Public IP Address with Free Dynamic DNS: A Comprehensive Guide

Learn how to hide your public IP address using free Dynamic DNS services. This comprehensive guide covers the process for various operating systems, including Linux, Windows, and MacOS.

Configuring Cloudflare's Malware Blocking DNS (1.1.1.1) for DNSTLS (DoT) requests

Learn how to enable DNSTLS requests and use Cloudflare's Malware Blocking DNS (1.1.1.1) to secure your connection against malware and phishing attacks.

Setting Up Static Routes for Multiple Home Networks: Computers on Different Networks

Learn how to set up static routes for computers on different home networks. This article explains the process for Linux, Windows, and MacOS systems.

Creating a Virtual Network Address and Route for a Specific Port on a Machine

Learn how to create a virtual network address and set up routing for a specific port on a machine, enabling separate machines to connect and communicate.

Setting Static IP Subnet Mask for a Device on a Home Network

Learn how to set a static IP subnet mask for a device on a home network, using an example of a workstation with the current IP address 192.168.1.117 and a printer with the old IP address 'zebra' that needs to be connected.

Understanding IPv6 Multicast with FF01::2 Address

Learn about IPv6 multicast addresses, specifically FF01::2, and their importance in network communication.

Find Maximum Speed for Ethernet Walls: 10Gbit Switches and Ethernet Cables

Learn the maximum speed supported by Ethernet walls when using 10Gbit switches and Ethernet cables.

Persisting Ubiquiti Industrial Switch Settings without UniFi Controller

Learn how to configure and persist settings on Ubiquiti Industrial Switches without the use of a UniFi Controller.

Setting Up Home Network with Two Routers using ZeroTier Bridge Mode

Learn how to set up a home network with two routers using ZeroTier Bridge Mode. Configure Router A in Bridge Mode with IP address 192.168.1.1 and DHCP for 192.168.1.0/24. Set up Access Point with IP address 192.168.2.1. Follow this step-by-step guide for a seamless networking experience.

Special Character Sets Accepted in WPA2-PSK Passwords

Users have reported that WPA2-PSK passwords can contain up to 8-63 characters, including letters, numbers, and special characters. This article will discuss which special characters are accepted in WPA2-PSK passwords.

Creating IP Alias for Devices in Different Subnets behind a VPN

This article explains how to create an IP alias for devices located in different subnets while using a site-to-site VPN connection. Routers involved are DLink DSR-250V2 controlling 11.11.11.0/24 subnet and another router managing 192.168.1.0/24 subnet. The VPN tunnel functions properly.

Maximizing the Number of Subnets: Understanding Subnet Bit Calculation