Articles about network | UserComp.com | Page [ 6 ]

Isolating Outward-Facing Server VM from Internal Virtual Machine Cluster

Isolates outward-facing server VMs from internal clusters via dedicated VLANs and disabled promiscuous mode to prevent lateral movement.

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Windows Dual NIC, bridge interfaces

Resolve Windows dual NIC connectivity by bridging interfaces to combine network segments into a single logical adapter.

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Laptops Unable to Access Local Network: Resolving 'No Permission to Access 192.168.0.111' Issue

Resolve the 'No Permission to Access 192.168.0.111' error by enabling network discovery, configuring firewall rules for file sharing, and verifying user credentials on the target device.

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Unable to Send TCP Packet Containing Surname via ping3 Netcat Listener (Kali Linux to Ubuntu)

Resolve TCP payload transmission errors by replacing the ICMP-only ping3 library with netcat or Python sockets to send data between Kali Linux and Ubuntu.

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Changing TTL (Permanently) for Apple Time Capsule: 'sudo sysctl -w net.inet.ip.ttl=65'

Explains why sudo sysctl cannot permanently change TTL on Apple Time Capsule and clarifies the difference between local macOS settings and router firmware.

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Windows 11 using two internet connections at one: Wifi + USB-iPhone, to sum up speed

Configure Windows 11 to use Wi-Fi and iPhone USB tethering simultaneously for failover or speed aggregation using metric adjustments or third-party bonding tools.

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Routing Traffic Coming to OpenVPN Access Server to the VPN Not Working

Fix OpenVPN Access Server routing failures on Ubuntu by enabling IP forwarding, configuring split tunneling, and correcting firewall rules to resolve asymmetric routing and packet drops.

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Prevent IP Addresses from Rotating in DHCPD.conf (Non-Static)

Prevent DHCP lease rotation by assigning a fixed IP address to a specific MAC address using host declarations in dhcpd.conf.

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How to Fix Kernel IP Routing Table is Empty Error

Resolve the Kernel IP Routing Table is Empty error by verifying network interface status and configuring a valid default gateway.

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Windows Computer: Gaining SSH Access Outside Local Network Using PowerShell

Resolve inability to remotely access Windows via SSH from outside the local network by configuring the native OpenSSH server and router port forwarding.

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Block DHCP Ports on Two Routers for Wireless Bridge Connection

Resolve IP conflicts and connectivity failures in wireless bridge setups by disabling the DHCP server on the secondary router.

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Nmap Not Showing Open RTP RTCP Ports

Resolve Nmap failing to detect open RTP and RTCP ports by configuring UDP scans with dynamic port ranges and version detection.

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Configuring Firewall Rules for WireGuard: Allow Connections between PC1 (10.0.0.1) and PC2 (10.0.0.3)

Resolve blocked peer-to-peer communication between PC1 and PC2 by allowing inbound UDP traffic on the WireGuard listen port.

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

Resolve IPv6 connectivity issues by correcting the accept_ra1 typo to accept_ra for proper SLAAC configuration on Linux.

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How to Achieve Git Pull with CGNAT?

Resolve Git pull failures under CGNAT by switching to HTTPS with credential caching to bypass port restrictions and firewall blocks.

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Possible Single IPVM Use in Different Networks: A Look into DNS Administration

Resolve split-horizon DNS issues to ensure clients in different subnets receive the correct local IP address for a shared hostname.

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Can Connecting Two VLANs on a Switch Cause a Loop?

Explains why connecting two VLANs on a switch does not cause a network loop due to logical broadcast domain isolation.

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Troubleshooting Host Name Lookup and DNS Resolution on Tech Support Sites

Fixes DNS resolution failures on public WiFi caused by captive portal misconfigurations and local cache corruption across Linux, Windows, and macOS.

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Troubleshooting: Laptop Cannot Connect to Internet After Switching to Another Router via WiFi

Resolve laptop internet connectivity issues after switching routers by forgetting old network profiles and resetting IP configuration via command line.

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Troubleshooting LAN Connection Issues on a Brand New Windows 11 Machine

Resolve LAN connectivity issues on new Windows 11 PCs by verifying hardware, checking adapter settings, running the troubleshooter, and resetting TCP/IP.

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Is my home network being attacked?

Detect home network attacks by identifying unauthorized devices, slow performance, and router log anomalies to secure your system.

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Why doesn't Ivanti Pulse-secure allow me to see my internal network?

Resolve Ivanti Pulse Secure internal network visibility issues by fixing split tunneling routes, DNS suffixes, and Windows interface metrics.

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Windows 11 DNS Resolution Not Working with Any VPN Service

Resolve Windows 11 DNS failures with VPNs by flushing the cache, resetting Winsock, and verifying adapter settings.

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Home Network Goes Down When Access Point (AP) Loses Power/Reboots

Resolve total network outage caused by Access Point reboot by configuring bridge mode and separating routing from wireless functions.

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Unable to fix 'Network unreachable' on Ubuntu server running Windows 11 Hyper-V

Resolve Ubuntu Network unreachable errors in Hyper-V by fixing virtual switch bindings and network adapter configurations.

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Slow Internet Speed with Ethernet Interfaces Connected: Windows Solution

Resolve slow Ethernet speeds on Windows by fixing duplex mismatches, updating network drivers, and resetting TCP auto-tuning settings.

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Port Alerts on Honeypot: Inbound SMB Connection from 192.168.1.1

Resolve false positive SMB alerts from gateway IP 192.168.1.1 by fixing NAT reflection misconfigurations and verifying honeypot isolation.

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Using ip Command for the First Time: Temporary Failure in Name Resolution - Debian 12.8.0

Resolve temporary failure in name resolution errors when using the ip command on Debian by applying the -n flag or setting IPADDR_NOLOOKUP.

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Can't Access Network Server on Windows 11 Home: Quick Fix

Resolve Windows 11 Home network printer connectivity issues caused by SMBv1 deprecation and incorrect port configurations.

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Resolving a Loop Scenario on a Network Due to Physical Short Circuit

Resolve Linux network freezes caused by broadcast storms from physical cable short circuits by isolating faulty segments and verifying STP states.

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Browser-Cache Refresh Through Network: How to Clear Your Browser Cache Remotely

Resolve stale content issues by configuring server-side HTTP cache-control headers to force browsers to fetch fresh data from the network.

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My LAN Adapter Not Working on HP Laptops

Resolve HP laptop LAN adapter failures by verifying physical connections, updating drivers via Device Manager, and enabling the NIC in BIOS settings.

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Troubleshooting Strong Swan Lancom Device Connection Issues

Resolve StrongSwan and Lancom IPsec connection failures by verifying network reachability, validating shared secrets, and analyzing logs for specific error codes.

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Troubleshooting Networking Issues in VirtualBox Machines

Resolve VirtualBox networking failures on Windows 10 by fixing adapter settings, firewall blocks, and hypervisor conflicts.

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How to Manually Add Hetzner Default Gateway for Private Network in Tech Support: A Step-by-Step Guide

Add a static route for the Hetzner private subnet to prevent internet loss while keeping the default gateway on the public interface.

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Connecting PC ethernet port to WAN port of Router

Resolve lack of internet access when connecting a PC directly to a router's WAN port by configuring Internet Connection Sharing or network bridging.

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How to Install Network Drivers to Resolve Network Issues on Lenovo Legion 5i (16IRX9, Type 83DG) - A Comprehensive Guide

Resolve network instability on Lenovo Legion 5i (16IRX9) by installing the Realtek 8852CE WiFi 6E driver.

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2nd ethernet connection "steals Internet focus" from 1st

Fixes internet connectivity loss caused by the OS routing table prioritizing a secondary Ethernet adapter over the primary connection.

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How to Fix Slow Internet Connection Due to Second Local Network

Resolve slow internet caused by IP conflicts and subnet overlaps between a primary router and a secondary local network.

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How to Mount ISO Files Over a Small Home Network with 1 PC and a CD Drive

Share ISO files via SMB to allow client PCs without optical drives to install software from a host machine.

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Hiding Public IP Address with Free DNS for Home Server Network

Dynamic DNS provides a stable hostname for home servers instead of hiding the public IP address.

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Looking for a Router with Native IKEv2 VPN Support with Username and Password Authentication

Resolve the inability of consumer routers to support IKEv2 with username and password authentication by using OpenWrt or pfSense firmware.

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Access Router Firmware Files / Override Them

Resolve the inability to directly access or override standard router firmware files by using the web interface or installing third-party open-source firmware.

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Network IP Addresses Are Different

Resolve unstable network connections for servers and printers by configuring static IP reservations or assigning permanent local addresses.

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Troubleshooting Logitech Mouse Driver Connection to a Weird Website

Block Logitech mouse driver telemetry by identifying the process in Resource Monitor and creating an outbound firewall rule to prevent connections to unexpected websites.

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Linux Not Responding to ECN Flags: Troubleshooting Guide

Resolve Linux not responding to ECN flags by verifying sysctl settings, checking firewall rules, and adjusting NIC offloading features.

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Understanding UDP Payload Traffic Transitions Between Machines in Windows Applications

Resolve UDP latency and packet loss issues in Windows applications by configuring packet sniffers to capture and analyze traffic patterns.

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Allowing a Device Access to the Internet through UFW on Raspberry Pi

Resolves the issue of client devices being unable to access the internet when sharing a Raspberry Pi's Wi-Fi connection via Ethernet while UFW firewall is active.

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Persistent Promiscuous Mode in Debian 12

Enable persistent promiscuous mode in Debian 12 using systemd-networkd or Netplan to support packet capture and network debugging.

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Understanding Network Patch Cables: A Closer Look at a CAT6 EIA/EIA-568B0.72M Patch Cable

Resolve connectivity issues by ensuring correct T568B wiring and appropriate shielding for Gigabit Ethernet performance.

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