Articles about networking | UserComp.com | Page [ 17 ]

Is it possible to intercept network traffic without having access to it?

Explains why network traffic interception is prevented by TLS encryption and endpoint compromise rather than physical access.

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Troubleshooting Prometheus Node Exporter Connection Issues

Resolve Prometheus Node Exporter connection refused errors by fixing Docker network isolation, port bindings, and service discovery.

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Configuring macOS with Custom DNS Resolvers in /etc/resolver

Configure per-domain DNS resolution on macOS by creating files in /etc/resolver to route specific domains to custom servers without changing global settings.

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IP Forwarding: Does it Actually Work on Isolated Machines with Two Wired Networks?

Enable IP forwarding on isolated Ubuntu machines by setting net.ipv4.ip_forward=1 in sysctl and configuring static IPs via Netplan to route traffic between separate subnets.

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Virtual Box Kali not getting IPv4 address on Nat Network

Resolve VirtualBox Kali Linux failing to obtain an IPv4 address on a NAT Network by verifying adapter settings, restarting network services, and configuring the DHCP server.

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Adding a WLAN Adapter to Windows XP in Hyper-V running Windows 11

Resolve inability to add physical WLAN adapter to Windows XP VM in Hyper-V by configuring an external virtual switch.

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Troubleshooting Unreachable Bridged NIC on Linux

Resolve unreachable bridged NICs on Linux by flushing the Forwarding Database to clear stale MAC address entries that cause blackholed traffic.

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Port Forwarding on an Airtel Router GPON - Step-by-Step Guide

Resolve external access issues for local services by configuring port forwarding rules on an Airtel GPON router.

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Windows 10 Network Speed Capped at 500Mbps: Troubleshooting the Issue

Resolve Windows 10 network speed capped at 500Mbps by adjusting NIC settings, resetting TCP auto-tuning, and verifying hardware capabilities.

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Two Computers with Widely Different Download Speeds: Troubleshooting

Resolve drastic download speed differences between two computers by diagnosing physical cabling faults, switch port issues, and network adapter driver misconfigurations.

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Route all internet traffic through Wireguard peer

Prevent DNS leaks and direct IP exposure by routing all internet traffic through a WireGuard tunnel using 0.0.0.0/0 AllowedIPs.

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Direct Connect via Ethernet: Two Windows 10 Machines Keep Connection via WiFi

Resolve inconsistent ping and connectivity issues between two Windows 10 PCs by configuring a stable direct Ethernet link with static IPs.

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Can't get Wake On Lan (WOL) to work through internet / DDNS

Solve remote Wake On LAN failures by configuring router-specific WOL features or using a local keep-alive service to bridge the broadcast gap.

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Understanding the Difference Between 10 Mbps, 100 Mbps, and 1000 Mbps (BASE-T) TCP Handshake and Physical Differences

Explains why Gigabit Ethernet requires all four wire pairs while 10/100 Mbps uses only two, clarifying physical layer differences and auto-negotiation fallbacks.

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PC Occasionally Loses Wired LAN Connection

Resolve Windows 10 PC wired LAN connection drops by disabling network adapter power saving, updating drivers, and resetting the TCP/IP stack.

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

Resolve direct Ethernet connectivity issues between a laptop and web server by configuring matching static IP addresses on the same subnet.

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Understanding NAT Masquerading in iptables: A Comprehensive Guide

Resolves connectivity failures for devices on private networks accessing the internet by configuring dynamic source NAT and enabling IP forwarding.

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Handling Two C4000X Giganet LANs via One Ethernet Port on a Linux Box

Configure Linux to route traffic between two isolated C4000X Giganet LANs using VLAN sub-interfaces on a single Ethernet port.

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Why am I getting no connection on my Arch Wireguard peer?

Resolve Arch Linux WireGuard no connection by loading the kernel module, setting correct file permissions, and allowing UDP traffic in the firewall.

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Cannot get a IP address from DDWRT wireless access point connected to Opnsense

Resolve IP address conflicts by disabling the DHCP server on DD-WRT and connecting it via LAN ports to OPNsense.

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Unable to Access Internet on Ubuntu Machine Connected to Windows Machine Using Ethernet

Resolve Ubuntu internet connectivity loss when connected via Ethernet to a Windows host by configuring Internet Connection Sharing and verifying IP routing.

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Setting up Routing on a Windows Machine with One Ethernet Card and Access to Two Networks (Internet and Private)

Resolve single-NIC connectivity issues by adding persistent static routes to direct private subnet traffic to the local gateway while keeping internet access via the default gateway.

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Ethernet Recognition Issue via USB-Hub: Connecting Laptop to Internet

Resolve laptop Ethernet recognition failures via USB hub by addressing driver incompatibility, insufficient power delivery, and bandwidth limitations.

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Identify Latency Problems to Gaming Server

Diagnose gaming latency by using ping and traceroute to identify packet loss, jitter, and network bottlenecks between the client and server.

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How to make F670L work with NOIP DDNS Ipv6

Resolve Huawei F670L IPv6 NOIP DDNS failure by using an upstream IPv6-capable router or replacing the device.

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Troubleshooting Return Traffic Not Routed Properly Through Passthrough Server

Resolve asymmetric routing and reverse path filtering drops to ensure return traffic passes through a passthrough server.

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Using Displays connected to PC from a Laptop via LAN

Resolve the inability to extend a laptop display to monitors connected to a separate PC over a LAN by configuring network topology and remote desktop software.

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Could Linux Hold IP Cameras in the Future?

Set up a self-hosted Linux IP camera system using ffmpeg and ZoneMinder for secure, private video surveillance.

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Communicating with Internal NICs using iptables: Route Internet Traffic

Enable IP forwarding and configure iptables NAT rules to route internet traffic from internal NICs through a primary external interface.

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Configure Ethernet Interface for Direct Link with Computer Router to Internet on Jetson Nano (Ubuntu 22.04)

Assign a static IP to Jetson Nano eth0 via Netplan for direct connection to computer router.

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Two CentOS Devices with IP Addresses in the Same Subnet Cannot Ping Each Other's MAC Address

Diagnose local connectivity issues between CentOS devices by verifying ARP resolution and firewall rules instead of attempting invalid MAC address pings.

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Two Routers, Two Connected LANs - No Bi-directional Pinging

Resolve bi-directional ping failures between two connected LANs by configuring static routes, verifying subnet masks, and checking firewall ICMP rules.

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OpenVPN Not Pinging Server on Debian 12

Resolve OpenVPN ping failures on Debian 12 by fixing UFW rules, enabling IP forwarding, and validating network interfaces.

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Understanding 'No Reachable Authority' Delegation in DNS

Resolve DNS No Reachable Authority errors by ensuring delegated name servers are publicly accessible and correctly configured to respond to queries.

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Enjoy Remote Access with ZeroTier: A VPN-like Solution

ZeroTier solves remote access by creating a secure virtual LAN that bypasses NAT and port forwarding without complex VPN infrastructure.

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Windows 11/10 Network: Why aren't Computers Showing Up?

Resolve computers not appearing in Windows 11/10 network lists by correcting network profiles, workgroup settings, and enabling discovery services.

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Definition of Circuit in Computer Networking

Explains how circuit switching establishes dedicated paths for consistent latency and contrasts it with packet switching and virtual circuits.

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NIC Change VM (Ubuntu Hyper-V) Default Switch

Fix lost internet in Ubuntu Hyper-V VM after switching to external network adapter by correcting Netplan configuration and verifying host switch binding.

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Troubleshooting Destination Port Unreachable Error in Local Network

Resolve Destination Port Unreachable errors by verifying service status, checking firewall rules, and ensuring proper routing between network interfaces.

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Add Bridge Interface to Docker Image for QEMU VM Reachability

Resolve QEMU VM network isolation in Docker by creating a custom Alpine image with iproute2 and startup scripts to bridge TAP devices.

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Host Access to VirtualBox VMs Configuration Issue

Resolve host-to-VirtualBox VM connectivity failures by switching to Bridged Adapter mode and configuring CentOS firewalld rules.

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Why is my public IPv6 address different from the one listed in Linux?

Explains why Linux shows a different IPv6 address than the public one due to privacy extensions and how to identify the correct global unicast address.

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Troubleshooting Windows Computers Unable to Connect to 5HGz SSID After Router/AP Reboot

Resolve Windows computers failing to connect to 5GHz SSID after router reboot by clearing stale network profiles and updating wireless drivers.

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How to Bind WireGuard Network Interface via IP Address instead of Interface Name in Linux

Resolve application binding errors by configuring policy routing to associate WireGuard IP addresses with the correct network interface.

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Using Arch Linux as Noob Need Help: Wifi Randomly Dropping

Resolve random Wi-Fi disconnections on Arch Linux by disabling power management and updating kernel firmware.

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Troubleshooting Access Point IP and Router Gateway Mismatch

Resolve access point connectivity loss by configuring a static IP address within the router's subnet and setting the correct gateway.

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Accessing PC on another subnet under a different router

Resolve connectivity issues between PCs on different subnets by configuring static routes and adjusting firewall rules on dual-router setups.

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Windowsfaststartup/hybridshutdown-DHCPrequest

Resolve Windows Fast Startup preventing DHCP requests by disabling the feature to force full network re-initialization on boot.

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Setting up SFTP Forwarding: Accessing Backend Servers with Client Details

Configure local SSH forwarding to securely access backend SFTP servers through an SSH tunnel without exposing them to the public internet.

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MoCA Adapter Setup - Mind Boggling Networking

Resolve unstable Wi-Fi by establishing a high-speed wired connection using existing coaxial cables with MoCA adapters.

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