Articles about networking | UserComp.com | Page [ 10 ]

Troubleshooting Network Connectivity Issues in a Workplace: A Common Conundrum for Companies with 30 People

Resolve domain join failures in small offices by fixing DNS, physical links, and time sync errors.

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Issues Accessing Devices on Subnet Behind Router: Main (10.1.0.x) and HA (10.10.0.x) Networks

Resolve unreachable devices on the 10.10.0.x subnet by adding a static route to the main router at 10.1.0.254 pointing to the HA gateway at 10.10.0.254.

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OpenVPN: How to reach a specific ip on client network side?

Configure static routes on OpenVPN server and client to enable bidirectional connectivity to a specific IP on the client network.

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

Resolve machine-to-machine communication failures by verifying subnet configurations, default gateways, and firewall rules for correct packet routing.

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Router Accessible by Local Devices but Not from the Internet Using Its DDNS Hostname

Resolve remote router access failures by verifying DDNS IP resolution, configuring correct port forwarding rules, and bypassing ISP port blocking.

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ARP Packets Dropped in Linux Bridge: Troubleshooting a Network Issue

Resolve ARP packet drops in Linux bridges by loading the br_netfilter module and setting bridge-nf-call-iptables to 1.

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Unable to Connect Kali Linux VM to Internet: VirtualBox NAT Issue

Resolve Kali Linux VirtualBox NAT internet connectivity failures by resetting NetworkManager and verifying DHCP lease assignment.

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Should I Leave Bandwidth Higher Actually? Setting Internet Connection and Prioritizing Networks

Prevents performance degradation caused by artificially capping router bandwidth settings below ISP limits.

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How to Reroute WireGuard Traffic from PC to VPS and VPN Server

Configure a VPS as an intermediate relay to route WireGuard traffic from a PC through a second VPN server.

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Troubleshooting Home Network Connection Issues with Netcat

Diagnose UDP connectivity issues by using Netcat to verify if packets traverse the network between source and destination.

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How to Terminate Cat Cable with Normal RJ45 Caps

Solve unreliable Ethernet connections by correctly terminating Cat cable with RJ45 caps using T568B wiring and proper crimping techniques.

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

Identify unauthorized SSH reverse tunnels by correlating listening ports with process IDs using ps and ss commands.

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Seeing several thousand retransmits every 10 sec. via iperf3 on TCP traffic through a proprietary network bridge device

Resolve high TCP retransmits on iperf3 tests caused by proprietary network bridge buffer exhaustion or CPU overload.

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Configuring Networks: Assigning Different MAC Addresses Depending on IP Address

Resolve the inability to assign unique MAC addresses per IP on a standard Linux bridge by using network namespaces and veth pairs.

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Effortless Time Syncing for Two Windows 11 PCs: A Connected Desk Solution

Resolve time drift between two Windows 11 PCs by configuring one as a local NTP server and allowing UDP port 123 through the firewall.

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Windows 11 Cannot Connect to Wi-Fi

Resolve Windows 11 Wi-Fi connection failures by resetting network stacks, updating drivers, and clearing cached credentials.

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Understanding Windows 10: IPv4 Configuration Per-Adapter Basis

Resolve Windows 10 network conflicts by configuring IPv4 settings per adapter to support simultaneous static and DHCP profiles.

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Creating a List of Physically Located Network Sockets in a Building

Map IP addresses to physical wall jacks by correlating device MACs with switch ports and verifying locations.

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How to Get Smartphone Hotspot Gateway IP

Resolve connectivity issues by identifying the smartphone hotspot gateway IP address on Windows, macOS, and Linux.

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Reaching Different Docker Containers Behind NAT: A TCP/UDP Communication Approach

Resolve inter-container communication behind NAT by using user-defined bridge networks and DNS resolution instead of exposing ports.

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Access Remote SSH Tunnel Inside Docker Container for NAT Traversal

Configure Docker containers to establish SSH reverse tunnels for NAT traversal by embedding the client directly in the container runtime.

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How to Delete a Queue in HTB: A Step-by-Step Guide

Remove HTB traffic shaping classes and their internal queues using tc qdisc del or tc class del commands.

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How to have stable WiFi connection and have autoconnection working?

Resolve unstable WiFi and failed auto-connections by disabling adapter power management and configuring automatic network joining on Windows, Linux, and macOS.

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Stream Copy USB Webcam on Remote Raspberry Pi to FFmpeg on Windows 11

Stream a remote Raspberry Pi USB webcam to FFmpeg on Windows 11 using MediatX and RTSP to bypass SSH latency.

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Reassemble Wireshark WiFi captured LLC packets into original message

Resolve Wireshark LLC packet reassembly issues by ensuring complete capture duration and correct monitor mode configuration.

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Does CAT8 Ethernet Double Exist?

Clarifies that CAT8 Ethernet does not have a double variant and explains why passive splitting fails for connecting multiple devices.

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Understanding Private IP Addresses: 172.16/12 Prefix

Explains how to use the 172.16/12 private IP range for internal enterprise networking and subnetting.

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PC Connected to Router (Fiberhome HG6245D) via RJ-45 Ethernet Cannot Ping Devices Connected Router via Wi-Fi

Resolve inability to ping Wi-Fi clients from a wired PC on a Fiberhome HG6245D router by disabling AP Isolation and verifying subnet alignment.

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Setting Up a Permanent Network Bridge Between Two PCs on Windows 11

Configure static IPs and disable firewalls to establish a direct, high-speed Ethernet link between two Windows 11 PCs without using a network bridge adapter.

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Optimizing Slow VPN Tunnel Speeds for High-Speed Network Connections

Resolve slow VPN speeds on high-speed networks by fixing MTU mismatches, switching to lightweight ciphers like ChaCha20, and using UDP to eliminate TCP-over-TCP overhead.

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How to stop web browsers sending requests on startup

Stop web browsers from sending unnecessary network requests on startup by disabling auto-updates, sync services, and page preloading in settings.

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Troubleshooting Ping Shows Received Packets with LAN Cabled Disconnected

Resolve false ping responses by configuring a static IP on the Ethernet adapter to prevent OS fallback to Wi-Fi or loopback interfaces.

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How to Setup Hyper-V for Home and Office

Enables Hyper-V virtualization on Windows Pro by configuring hardware prerequisites, network switches, and resource allocation for home or office use.

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Interconnecting Two Discrete NICs: Failed Routing Table Manipulation

Resolve failed routing between two discrete NICs by implementing policy-based routing to bind source IPs to specific interfaces and tables.

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Unable to Access SQL Servers from Host Machine: DNS Issue

Resolve host-to-VM SQL server connectivity failures caused by DNS resolution errors in VMware environments.

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Routing Internet-Bound Traffic Between Two WireGuard Peers

Resolves internet traffic routing loops between WireGuard peers by configuring server IP forwarding and client default gateways.

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Using FileZilla to connect to an unmapped HDD on home LAN

Configure FileZilla Server to share an unmapped HDD on a home LAN without Windows drive letter mapping.

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Is it possible to have a DNS NS record point to a domain from outside the queried nameserver's domain?

Resolve DNS delegation errors when configuring NS records to point to external nameservers outside the queried domain.

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Cannot Find Wireless Printer Connected Via Ethernet Cable Using Wi-Fi

Resolve network discovery failures for Ethernet-connected printers by disabling AP isolation and ensuring devices share the same IP subnet.

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How do I know if my cat mated?

Identify if a cat mated by observing increased vocalization, restlessness, swollen vulva, and specific mating postures.

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Understanding Subnet Masks for Public Internet Host Communication with CH7465LG Connect Box

Resolve IP routing conflicts and ensure reliable public internet connectivity by correctly configuring the subnet mask on the CH7465LG Connect Box.

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How Do NAT Rules on One Computer Affect Traffic on Another?

Resolves conflicts where one device’s port forwarding rules block or redirect traffic intended for other devices sharing a single public IP.

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Troubleshooting WiFi and Ethernet Connectivity Issues with VPN

Resolve VPN connectivity failures caused by IP routing conflicts, DNS leaks, and interface power management issues.

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Lifecycle of HTTP request messages after being received

Explains the Linux kernel lifecycle of HTTP requests to help debug connectivity, optimize performance, and secure network services.

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Access Point: Keep Ubuntu 22.04 LTS Laptop Connected to Internet with Ethernet Only

Resolve intermittent internet drops on Ubuntu 22.04 by disabling Wi-Fi and prioritizing Ethernet connections to prevent interface conflicts.

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Devices: Secondary Router Unreachable

Resolve secondary TP-Link router unreachability by fixing IP conflicts and disabling its DHCP server.

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How to Parallel Network Gb and 2.5Gb NICs on Three Computers

Resolve network bottlenecks by bonding Gigabit and 2.5Gb NICs into a single logical interface for increased throughput on Linux, Windows, and macOS.

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Accessing Devices, VPNs, Subnet Servers on Local Network

Resolve remote access failures to local devices and subnet servers by configuring VPN routing tables and verifying connectivity.

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What to Do When a Hacker Breaks Into Your Router

Resolve router compromise by isolating the device, performing a factory reset to remove malware, and hardening security settings.

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Wireguard Peer Not Accessible by Other Peers: Troubleshooting Guide

Resolve Wireguard peer connectivity failures by fixing AllowedIPs, enabling IP forwarding, and opening UDP port 51820 in firewalls.

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