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

How is XP still vulnerable behind a NAT + firewall

Explains why Windows XP remains vulnerable behind NAT and firewalls due to outbound malware traffic, UPnP risks, and unpatched legacy vulnerabilities.

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Connect Two Routers to Incoming Fiber Optic Supply: Telephone, Broadband, and Extra Features

Resolve double NAT conflicts and preserve VoIP service when connecting two routers to a fiber optic supply.

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Forcing a Specific WLAN Device to Connect Automatically in Linux (Raspberry Pi 4 with Debian)

Configure NetworkManager to automatically connect a specific WLAN interface by creating a persistent profile with autoconnect enabled.

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How to Connect a Dockerised NodeJS Server Application to External Clients and Databases

Resolve Docker NodeJS connectivity issues by exposing ports and binding to 0.0.0.0 for external access.

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Activating Internet on PC for Intranet Network: A Solution

Resolve internet connectivity failures for specific applications like TeamViewer and browsers on intranet-configured PCs by fixing proxy, firewall, and DNS settings.

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Using iptables to Forward All Traffic through a GID-based Interface

Forward traffic from specific GID processes through a designated interface using iptables marking and policy routing.

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What Happens If Multiple Hosts on a Local Network Share the Same Username

Resolves SSH host key conflicts and authentication errors caused by cloning VMs or sharing identical configurations across multiple network hosts.

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Put Router as DHCP Server for Computers and Modem to Keep 192.168.0.x Addresses

Resolve DHCP instability and connectivity drops by configuring your router as the primary server to maintain stable 192.168.0.x addresses for local devices.

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Using Home Router IP Address as Proxy for Computer Anywhere?

Resolves the inability to use a home router IP as an HTTP proxy by providing SSH tunneling and VPN alternatives for remote access.

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Troubleshooting Ping in Windows Machine Network without Router or Server

Resolve Windows ping failures in direct peer-to-peer networks by configuring static IPs, enabling network discovery, and allowing ICMP through the firewall.

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Finding Static IP Address for Access Control Unit on Windows 11

Resolve Access Control Unit connectivity issues on Windows 11 by identifying its IP via ARP and configuring a matching static IP address.

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Access Network Storage from USB-Storage-Only Device

Share files from a USB drive on the network by connecting it to a NAS or media server that exposes the storage via SMB or NFS.

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Reroute and tunnel udp connection to another server

Redirect UDP traffic to another server using iptables DNAT and static routing.

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

Resolve Zabbix host ping failures across separate Docker bridge networks by connecting the container to multiple networks.

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High UDP Packet Loss in Windows 11 but Not Ubuntu

Resolve high UDP packet loss in Windows 11 by optimizing network adapter interrupt moderation and buffer settings to match Ubuntu performance.

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Cannot clear DNS cache on MacOS Monterey

Resolves DNS_PROBE_FINISHED_NXDOMAIN errors and connectivity issues on macOS Monterey by flushing the local DNS cache via Terminal commands.

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Successfully Bring up IPsec VPN Tunnel on Ubuntu 24.04.2 using Gnome Network Settings and StrongSwan Plugin

Resolve IPsec VPN connection failures on Ubuntu 24.04 by configuring the StrongSwan plugin via Gnome Network Settings.

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Is 0.1.0.3 Local IP Address an IPV4 Loopback Address or Not?

Clarifies that 0.1.0.3 is not an IPv4 loopback address and explains the correct usage of the 127.0.0.0/8 block for local host identification.

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Tray Icons: Understanding WIFI vs VPN Symbols

Distinguishes Wi-Fi and VPN tray icons to diagnose local connectivity versus secure encrypted tunnel status.

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Understanding Subnets: Differences Between Gateway and Static IP Range

Resolve network connectivity issues in Linux by configuring static IP addresses and gateways using nmcli for reliable hybrid home-to-company connections.

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Windows 11 Ignores Metered Connection Setting?

Resolve Windows 11 ignoring metered connection settings by resetting the network stack, verifying adapter status, and checking for Group Policy overrides.

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Ongoing Internet Issues: Troubleshooting Guide for Network, Router, and Mac

Resolve persistent internet connectivity issues on Mac by flushing DNS, renewing DHCP leases, and rebooting the router.

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Troubleshooting 1000Mbps NICs Limited to 40Mbps: A Common Issue with VPNs

Fix 1000Mbps NICs limited to 40Mbps by verifying physical link negotiation and adjusting MTU settings for VPN tunnels.

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Network Manager Created Default Wired Connection: Wired-1

Resolve issues with NetworkManager automatically creating generic Wired-1 profiles by manually configuring static IP addresses and DNS settings for specific Ethernet interfaces.

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How to Route Traffic in the Reverse Direction in VPN Tunnels

Resolve asymmetric routing issues in VPN tunnels by configuring server IP forwarding, static routes, and client push directives to enable bidirectional traffic flow.

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PFsense: Fake Subnet and IPsec Tunnel Mapping

Resolve IPsec routing failures for remote fake subnets by configuring precise Phase 2 definitions and excluding traffic from NAT in pfSense.

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Windows 10 Login Screen Issue: Missing User List Network Icon

Fix missing user list and network icon on Windows 10 login screen by correcting Group Policy settings and repairing corrupted system files.

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How to write current network speed

Calculate real-time network speed in bits per second by parsing /proc/net/dev byte deltas without external dependencies.

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Fix Constantly Disappearing and Reappearing Hyper-V vEthernet (Switch) Interface on Windows

Resolve Hyper-V vEthernet interface dropping by disabling Link State Power Management on the physical NIC and updating drivers.

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Troubleshooting: One Browser or Messenger Can't Connect to Network

Resolve single browser or messenger network failures by clearing cache, resetting proxy settings, and disabling conflicting extensions.

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Resolving Recurring Network Issues on Windows Server 2016 Terminal Servers (T1, T2, T3)

Resolve recurring network disconnections on Windows Server 2016 Terminal Servers by fixing NIC teaming, virtual switch settings, and DNS delays.

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Can't ping router - Troubleshooting Network Connectivity Issues

Resolve router ping failures by verifying IP subnet alignment, enabling ICMP echo replies, and correcting DHCP lease errors.

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Is an Open Port for VPN Protected from Hackers?

This article explains how to protect open VPN ports from brute-force attacks, MITM exploits, and unauthorized access through proper encryption, authentication, and firewall configuration.

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Creating Own VPN Server for External Users

Solves the problem of securely allowing external users to access a private network by configuring an OpenVPN server on Linux with proper certificate management and firewall rules.

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How to Connect Two Routers to the Same PC for Minimizing VR Headset Latency

Resolve high VR headset latency by optimizing primary network settings and QoS instead of using a dual-router setup which increases complexity and potential bottlenecks.

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Troubleshooting: Different IP Address and Gateway

Resolve network connectivity errors caused by mismatched IP addresses and default gateways by verifying subnet alignment and correcting configuration settings.

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Windows 10 Ethernet Falls Back to 1Gbps or 100Mbps Randomly: A Solution

Resolve Windows 10 Ethernet randomly falling back to 1Gbps or 100Mbps by disabling Energy Efficient Ethernet and updating Realtek drivers.

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Linux Hosts with Two Interfaces: Host A and Host B IP Addresses

Resolve ambiguity of IP addresses on Linux hosts with multiple network interfaces by using ip addr show to map specific IPs to distinct adapters.

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How to Make Tor Work Without the Tor Browser on Your System

Configure macOS to route application traffic through the Tor anonymity network using a local SOCKS proxy without the Tor Browser.

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Converting WireGuard Docker Setup to Kubernetes: Handshake OK, No Internet Access

Resolve WireGuard handshake success but no internet access in Kubernetes by updating AllowedIPs and enabling IP forwarding.

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Several Workstations Lose Internet Connectivity Periodically: Troubleshooting Steps

Resolve periodic internet loss on workstations by adjusting DHCP lease times and flushing corrupted DNS caches.

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Network Error: 0x80070043

Resolve network error 0x80070043 when inserting a new drive by verifying the Private network profile, starting essential discovery services, and allowing SMB traffic through the firewall.

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Decrypting Network Traffic: A Useful Approach to Solving Encrypted File Issues

Decrypt network traffic to identify hidden errors causing encrypted file transfer failures.

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Apple Apps Load Slowly on Home Network After Removing Pi-hole?

Resolve slow Apple app loading after removing Pi-hole by clearing local DNS caches and renewing DHCP leases to fix stale routing.

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Troubleshooting WiFi Router Signal Issues from Network Switch

Resolve WiFi router connectivity failure from network switch by verifying physical cables, configuring DHCP on the WAN interface, and preventing IP conflicts.

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DNS Reverse Lookup Failed: Timeout Error

Resolve DNS reverse lookup timeouts by verifying resolver configurations, checking firewall rules, and testing connectivity on Linux and Windows.

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Setting Up Nginx Reverse Proxy for Home Assistant OS on KVM

Solve external access issues for Home Assistant OS on KVM by configuring Nginx reverse proxy with WebSocket and SSL support.

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Troubleshooting: Unable to Access a Specific Website on iPhone

Resolve iPhone connectivity issues with specific websites by clearing Chrome cache, resetting network settings, and verifying DNS configurations.

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Home LAN Mapping Software: Easily Manage Your Network

Home LAN mapping software solves the problem of manual IP tracking and unauthorized device detection by providing an automated visual inventory of network health and security.

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Restoring LAN Connection for PS5 on Netgear Cax80 Gateway with Comcast 1.2 Gigabit Internet

Resolve PS5 LAN connection failures on Netgear Cax80 by verifying physical links, DHCP assignments, and MAC filtering settings.

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