Questions tagged [networking]

For questions on connecting devices together so that they can communicate with each other, as well as questions on networking equipment such as routers and switches.

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QEMU: slow network performance with virtio_net driver

I'm running KVM/QEMU 7.2.0 with Linux for both host and guest (kernel 6.1.6 on x86_64). For the virtual networking, I'm using bridge device on host to which guest attaches its NIC as tap device: -...
jurez's user avatar
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Losing connection on my main router when unplugging the secondary router's ethernet cable

I have two routers. One is my main router which has internet connection. The second router is connected to it with an Ethernet cable to extend connections in my house (LAN to LAN), as for the settings ...
Yassine's user avatar
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Network interface still negotiates 10 Mbps link when computer is down

I have a PC (Windows 10) that, when powered off, still negotiates a link with the switch at 10 Mbps. As soon as the host is up, the speed is renegotiated at 1000 Mbps. I was wondering what this was ...
WoJ's user avatar
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NAT setup on Proxmox

I'm trying to set up NAT on Proxmox VE 7.3-4. I followed this guide but changed the IP range and didn't do any port forwarding yet https://bobcares.com/blog/setup-nat-on-proxmox/ I edited /etc/network/...
Maciej Swic's user avatar
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PC starts immediately after shutting down

recently my PC starts up again immediately after I shut it down or put it to sleep. This has been happening since I set up Wake on LAN. I'm convinced it's the LAN connection but I don't know how to ...
KindOfTrue's user avatar
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With GlobalProtect VPN I need to retry many times before connecting successfully

I am using macOS Ventura 13.1 (M1 Pro CPU) with GlobalProtect VPN 6.1.0-58. Once I establish the VPN connection it is stable and it's working fine. But the process of establishing the connection is ...
Mladen Krstić's user avatar
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233 views

Auto reconnect to multiple Wi-Fi networks

I have a PC with two network adapters connected to different Wi-Fi networks. It often drops one of the networks and doesn't attempt to reconnect to it while the other network is still intact. However, ...
Дмитрий Севастюк's user avatar
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127.0.0.2 address ping reply is coming from 127.0.0.1

I have no idea what has happend in my windows configuration. But when i ping address 127.0.0.2 address reply is coming from 127.0.0.1. This was not like this before and this is important to me as this ...
whd's user avatar
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1 answer
143 views

Webcam and hotspot concurrent access?

I have a webcam that broadcasts it's own SSID for direct connection without a router, as well as a mobile hotspot. Is there any way I can have my PC connected to both concurrently? Webcam: MiWa MW3 ...
Arctiic's user avatar
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How to configure a static IP address in the local network for a Ubuntu VM?

I am using a Windows 10 laptop connected to the internet via Wifi. On it I run a VirtualBox with Ubuntu 20.04.5. As I want to connect to the internet AND to the local network I plan to configure two ...
Alex's user avatar
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My whole Wi-Fi network crashed and nothing works. Is the issue the cable modem or my wireless router?

The cable modem was knocked off the desk it was on and suddenly nothing works! I own my Motorola DOCSIS 3.0 modem, it worked fine with Comcast. I had it connected to my TP-Link router (running DD-WRT)...
Cool Pontiac's user avatar
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Files on SMB share not writable by "some" applications

I have a problem with a shared network drive where, in principle, I can create and modify files, but some applications give an incorrect function error (or similar) when trying to modify a file on ...
user1767763's user avatar
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561 views

How to use "nmap" to get those IP addresses that respond to a ping?

On a Ubuntu VM (running on windows) I want to use nmap to list all IP's that respond to a ping. I tried sudo nmap -sP 192.168.200.0/24 sudo nmap -sn 192.168.200.* which incorrectly state for every IP ...
Alex's user avatar
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How to share socks proxied internet with OpenWrt

I have a router in which installed OpenWrt 22.03.3 and I do ssh [email protected] into it. Then I run these two commands: ssh -fnD 1010 root@my_public_server -pPort Now I can have a socks proxy from ...
Saeed's user avatar
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796 views

Enable ssh in emergency mode for centos 9

I'm trying make a backup system for my Centos Stream 9 headless server by installing a cloned system disk on a newer machine. No surprise, the newer machine booted into emergency mode (hardware ...
cidy.long's user avatar
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Port forwarding is not working on ZTE H267A V1.0

I am trying to set up an Ubuntu server at my home. I have a static public ip which is 213.xxx.xxx.xxx I installed the Ubuntu Server to the computer that I want it to become the server. It is connected ...
Baran's user avatar
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16 views

Prevent Windows from connecting to a router with specific IP adress

My PC is located right between the router and the repeater. The concern is that my PC will automatically connect to the repeater which gives me a 40mbps connection instead of 300mbps if I was directly ...
ElFabinou's user avatar
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273 views

Evil twin WiFi station has no internet connection

I am trying to create a fake AP using the airbase-ng to test how evil twin works. I have a WiFi adapter TP-link WN4226 [Atheros AR9271 chipset], which supports monitor mode. My laptop (running on ...
mirsahib's user avatar
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Cannot connect to home server in multi router setup from outside networks

My friends cannot connect to my home server. It´s port forwarded, but if I test the port connection with YouGetSignal, it tells me that the port is closed. I have a Tp Link powerline network, and the ...
HugoKH's user avatar
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457 views

Provide internet access to VM in private network through another VM

I have use vagrant to defined 2 VMS (FW and server). FW has 2 nics: 1 public network with an IP from my LAN and 1 private network server has 1 nic: private network. I am trying to provide internet ...
Petote's user avatar
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Network drive disconnects randomly

I have an application that a lot of users use. The users are spread on a network and all the data used by the application is stored on a network drive. The application reads the data from the drive, ...
Jens's user avatar
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WDS disabled if router rebooted with ethernet unplugged

I am using a TP-Link Archer AX4400 as my primary router and a TP-Link Archer C2300 as an extender via WDS. ....Or trying. Following these instructions, it sets up WDS successfully and works fine. ...
tyger07's user avatar
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In-wall Cat5e cable pinging 1,3,5,7 when tested — what is on the other end?

I bought a house with cat5e wiring for phone lines to each bedroom. I upgraded each outlet and source at the network box to rj45. After proper crimping and accounting for all of the outlets on the ...
ethernetwiringguy's user avatar
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169 views

Can I set up two separate VPNs on servers connected to the same router?

I am in a peculiar situation where a business has been split into two separate entities, but their infrastructure remains under the same roof. All of our physical servers are connected to the same ...
Divo's user avatar
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How do I detect if I'm connected to two VPNs on MacOS, from the commandline?

Is it possible to detect, from the commandline, on recent MacOS versions, if the system is connected to two VPNs? I've tried scutil, but it seems not to display information useful for this case.
Marcus's user avatar
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Cannot connect to internet after fresh install of debian

So , yesterday I did a fresh install of Debian 11 on my Dell Vostro 3480 , I got a DHCP issue during the configuration so I entered the IP and mask manually during at that time . After that once the ...
Kushagra Bajpai's user avatar
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215 views

download speed always drops on ethernet but upload speed never does

I have 3 Gbps fibre internet connected to my machine, through ethernet, and I never seem to get the full download speed no matter what, however the upload speed is always at maximum, which is weird. ...
violetbxby's user avatar
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Windows 11: impossible to use USB 2.0 to Ethernet adapters

I need a specific configuration on my Dell laptop with Windows 11 (more details in this question). To achieve this configuration, I need the following: One USB-to-Ethernet adapter, plugged on the USB ...
C. Crt's user avatar
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Aceessing machine behind a NAT

I am trying to share a WiFi connection (from host A) via Ethernet (to host B), both machines running Ubuntu. The network sharing on host A was a simple matter of enabling in NetworkManager of a "...
Paul92's user avatar
  • 111
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2 answers
546 views

Windows 7 VM in Windows 10 Pro Hyper-V: after years, network no longer works

I created a Windows 7 VM in Windows 10 Pro perhaps 5 years ago. It worked fine for many years. I rarely use this VM (maybe once every two or three months, sometimes longer) and very few changes have ...
Daniel's user avatar
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1 answer
199 views

When a second router is connected to my internet router, Connection-specific DNS Suffix keeps changing for an incorrect one(?)

When another router is connected to my internet router by ethernet cable, after hours the Connection-specific DNS Suffix seems to change to a incorrect one (I believe it changes to the one in that ...
user18918352's user avatar
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1 answer
577 views

LAN computer error when i try to ping: timeout

Hello everyone. I am trying to ping a local connected computer (PC 2). Both PCs are WIN 10 and are connected to the router; PC 1 is connected via Wireless and PC 2 is connected via Ethernet. When I ...
wido's user avatar
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30 views

Setting up a 2 DMZ configuration, simulating an attacker in the middle zone, pinging hosts after the second firewall is not possible

I am setting up a network with a 2 DMZ configuration and decided to put an attacker within the middle zone of both firewalls. I am trying to ping some of the hosts that are located after the second ...
pdaranda661's user avatar
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323 views

Error 0x8007003B on SMB Shares when "Guests allowed" set

When I enable the option "Guests allowed" for any SMB/CIFS share on my OMV 6.1.3-1 server, Windows 10 and 11 report error 0x8007003B "Unexpected Network Error", when copying file ...
Cellcon's user avatar
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44 views

VPN and internet access on Linux

My aim is to connect through a VPN via L2TP to my 4G router at home to exploit an SSH connection. I have linux KDE installed. The connection is established correctly but most of the most heavy ...
Murtaza Hashwani's user avatar
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2 answers
136 views

Laptop stuck in airplane mode

Fresh install of windows 10 home. I can't get the laptop out of airplane mode. Any option is grayed out. I can enable the WiFi and even see ssids for a second, then it goes back to disabled. I plugged ...
mr odus's user avatar
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240 views

How to hide one's public IP when they serve a website

When people use their home computer to host a website, what are some ways to hide their public IP? if there are any. Sure, it can't be completely hidden for everyone, like my IPS. Does cloudflare work ...
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102 views

Why is my wire network connection established only at 10Mb/s?

At home, I have internet access through the public fiber network. My ISP is free (a french one) that provide a box called "freebox" with an integrated switch providing 4 ethernet ports. My ...
Fabien Quatravaux's user avatar
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1k views

Newly created Internal Network in Hyper-V is Undefined Network

I want to create a new network in Hyper-V manager with the following conditions: Subnet /24 (for example 192.168.21.0/24) The IP Address of each VM remains the same with DHCP with MacAddress ...
Saeed's user avatar
  • 403
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0 answers
725 views

Linux networking using macvlan interfaces

This setup is working for my needs but I don't understand it which concerns me e.g I assume it's possible a system update could break this functionality and if I don't properly understand then how can ...
Kelvin's user avatar
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0 answers
546 views

How to use WinNAT for both Hyper-V VMs and Docker containers at the same time

I'm trying to set up a home server to host both VM's and Docker containers. No issues on the VMs running in Hyper-V part: Create a new internal switch (NatSwitch) Set it's IP configuration: New-...
Irwene's user avatar
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1 answer
138 views

I cannot ping the destination address of the sensor's destination address

I am trying to connect a sensor to my laptop. This happens through a media converter where two cables are plugged into it from the sensor. Then, (a third) an ethernet cable is connected from media ...
A2LBK's user avatar
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429 views

Ethernet stuck in an "Identifiying... No ethernet" loop after every boot, need to renew IP

This started happening a few days ago, I don't remember doing anything that could cause this issue. The cable is fine, so is the port. Tried resetting the adapter settings, resetting the router and ...
Meremam's user avatar
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54 views

Are there router, network, or other settings that would prevent in-game chat from working?

I seem to be unable to speak in-game chat for any PC game, after trying on Halo Infinite, CoD MWII, and CoD Cold War. I can hear other players, they cannot hear me I've gone through in-game settings ...
Trevor D's user avatar
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1 answer
141 views

Getting stuck on DNS configurations for routing external domains to my internal Kubernetes cluster (Traefik)

I have DNS entries in CloudFlare set to my current home IP (I have Dynamic DNS setup). who.willkara.com > IP Internally, I have a PiHole server handling DNS and actually have that working.The ...
Sempus's user avatar
  • 119
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1 answer
314 views

Getting different vlan when connect with my phone with USB tethering

I'm trying to figure this out. I don't have the option to connect my PC to the network via ethernet and I don't have any Wi-Fi capabilities on my PC so I'm using an old smartphone with USB tethering. ...
Tal's user avatar
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125 views

Multiple simultaneous VPN connections

I am using terminal to connect to multiple VPN instances (in parallel, from a single terminal) with openvpn api in Go. I have many VPN servers. Some combinations of VPNs work together but some of ...
mbaros's user avatar
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125 views

How to Debug ping / telnet takes time to resolve the host

If I ping a dns record like ping google.com it'll take 4 seconds before getting the first request then it's instant, same for telnet. but if I ping 142.250.201.174 it's instant. I don't know how to ...
Sanhaji Omar's user avatar
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272 views

Running Datalust/Seq on Ubuntu, can't rich the UI

I just installed Seq database (v2022.1) on my Ubuntu (v20.04.4, it is a Server, not WSL) using it's official docker image (datalust/seq), following the steps described here: Getting Started with ...
Ali Fathi  's user avatar
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1 answer
41 views

Networking for Robotic System uses internal ethernet with no router typically, but can be connected to an external router I do not have access to

Note: I am a novice in networking. Also suggestions that do not require hardware redesign of the robot are preferential I am developing an open-source underwater robot (AUV), and my robot currently ...
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