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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Fast internet, but slow local area network speeds

Essentially I'm trying to get better Virtual Desktop bitrate performance on my Meta Quest 3, which uses local area network speed. But no matter what I try, my local area network speeds never exceed ...
Silven IX's user avatar
3 votes
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75 views

Computer cannot resolve Firebase domain

I am currently debugging a chrome extension that I wrote, which uses Google Firebase for its authentication and its realtime database. Now, the extension is already distributed to a number of people, ...
Nicholas's user avatar
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Why are my computers trying to connect to an (?)unassigned local IP address

I am seeing entries like the following in my router firewall log: Oct 02 17:03:30 [352898.020000] Firewall: Denied CONN=lan MAC=XX:XX:XX:XX:XX:XX:YY:YY:YY:YY:YY:YY:08:00 SRC=aa.aaa.aaa.aa DST=192.168....
Lars's user avatar
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758 views

Linux network manager getting two ip addresses instead of one

I have a problem that when I connect to network using NetworkManager in Linux (doesn't happen when using wpa_supplicant but I don't like it) it gets two IPv4 addresses that show up as for example 192....
Julian's user avatar
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Bridge from QEMU inside WLS2 to Windows

I have a Windows (Windows 10 Enterprise 20H2) network interface with static address 192.168.1.6 set. In Hyper-V manager I set WSL virtual switch to connect to "External network" and choose ...
xJason's user avatar
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574 views

How do I use OpenSSH network tunneling in Windows?

I want to use the OpenSSH tunneling capability that is described in this wiki entry, in which SSH tunnels all traffic at OSI level 2 or 3 via virtual network devices on both ends, a.k.a. tun/tap. I ...
Ethan T's user avatar
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725 views

Cannot connect to Android emulator (10.0.2.x) from Macbook (192.168.0.x)

Using Android Studio, I noticed that the IP of the Android emulator was 10.0.2.16 while the host Macbook has 192.168.0.x and other devices (and VMs on the same Mac) all have 192.168.0.y. I tried to do ...
user513667's user avatar
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Why cannot veth-pair I created ping through each other

I created veth pair ip link add veth0 type veth peer name veth1 ip addr add 1.2.3.101/24 dev veth0 ip addr add 1.2.3.102/24 dev veth1 ip link set veth0 up ip link set veth1 up 485: veth1@veth0: <...
Lavender's user avatar
3 votes
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167 views

How to know if my networkd configuration was successful?

I am writing a small program to reconfigure network interfaces for device, which uses systemd and networkd. If I modify network configuration files, I need to do networkctl reload for changes to take ...
BЈовић's user avatar
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2k views

Routing traffic through custom tap device en-route to internet on linux

I have a VM that is using a tap device (tap2) and my goal is to filter all the traffic in/out of tap2 using a custom program written by me that runs in userspace. The topology I came up with routes ...
Shriphani Palakodety's user avatar
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431 views

What is the purpose of this rail on an intel X540-T2 NIC?

I recently picked up a pair of Intel X540-T2s for various reasons. They're generally meant for (older) servers and workstations but I'm installing them in relatively modern desktop machines. I noticed ...
Journeyman Geek's user avatar
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How to timeout ADB connect <ip>

I'm making automation bash script that will go over range of IP's and try to connect over ADB. If I try: adb connect <not android device> the command will hang for 30 seconds until it say "...
Sasha Milic's user avatar
3 votes
0 answers
648 views

SSH Hangs Indefinitely (on any port) Only On Specific WiFi Connection

So, I have a DigitalOcean droplet with key-based authentication over SSH. However, if I am connected to a specific WiFi network, the connection hangs indefinitely while connecting to the server. If I ...
Alex Huszagh's user avatar
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9k views

Could you explain how disabling Large Send Offload v2 fixes slow upload speeds?

I have a 100 Mbps fiber connection I'm connecting to over WiFi (ASUS PCE-AX58BT AX3000 Dual Band - Intel Wi-Fi 6 AX200 160MHz), though note that the routers do not support WiFi 6 (NETGEAR R6200v2 ->...
dVVIIb's user avatar
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3k views

WSL on Windows 10 - localhost works, 127.0.0.1 doesn't (and is not my local IP)

I'm in the middle of setting up WSL on Windows to work on PHP stuff with my PHPStorm. Started the config, and installed Apache and PHP. To check, I'm opening my browser on localhost, it works, but on ...
Jeremy Belolo's user avatar
3 votes
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Set Windows Background Colours from a Webpage Script

The Display Screen Optimiser I have a web app which identifies the optimal background colours for reading speed. It can set this optimal colour as the background for our site but our users want to be ...
Steve's user avatar
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3 votes
1 answer
1k views

How to avoid TCP/IP Fingerprinting

I have the following setup: +-----------+ SSH Tunnels Over Socks5 Proxy +--------------+ | | | | | Linux PC +-------------------------...
sashage's user avatar
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What is an alternative solution to NAT hairpin?

I recently came across an annoying problem. I have Ubuntu server running in my home network that runs web server, DHCP and DNS. I successfully exposed it using DMZ, so I could access it from the ...
kwojcikowski's user avatar
3 votes
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2k views

How to limit the speed of my Mobile Hotspot on my Windows 10 PC

So, recently i have started to set up my computer as a mobile hotspot for my mobile phones, the issue is, my internet speed ON the pc goes down to like 7-8 Mbps from the usual 800-850 Mbps when the ...
David's user avatar
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Windows iperf3 speed test slower than Linux

Hardware setup NAS: Core i3 7100, Intel X540T2 10GbE Switch: Mikrotik CRS305 PC: Ryzen 7 2700, Intel X540T2 10GbE Cables: 2x Cat 7 cables Software Setup NAS: Ubuntu 20.04 alexwang@alex-nas2 ~ (...
Alex Wang's user avatar
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131 views

WICD Network Manager: Takes over a minute to cancel a network connection attempt. Forced to wait for DHCP client to timeout

Debian Buster XFCE using WICD. I do a lot networking work: setup and diagnosis of routing and switching. As such, it's not so rare that I ask WICD to connect to a network that has no functioning DHCP ...
Shawn Hughes's user avatar
3 votes
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2k views

Synology NAS Hibernation issues due to SMB broadcasts

I'm another user going around this merry-go round again. I purchased a Synology NAS DS718+, installed Plex and Docker (calibre-web-server), and have found the NAS is never sleeping. After looking at ...
davidhood2's user avatar
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0 answers
2k views

Why is my laptop (Debian 10) only connecting with 100Mbit/s instead of Gigabit?

My laptop (Thinkpad T450s) with Debian 10 only connects with 100Mbit/s instead of Gigabit through ethernet, although the network card should be capable of Gigabit LAN (see #2 below). I tried a machine ...
C4X's user avatar
  • 31
3 votes
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1k views

Windows qemu how to create multiple TAP-Windows Adapter V9?

I installed qemu on my Windows 10 PC. I installed openvpn tap-win32 driver on my PC, after installation, there is a TAP-Windows Adapter V9 in the system 3.I used this command to start a ubuntu VM. ...
Gary Allen's user avatar
3 votes
0 answers
160 views

Advertise to clients of Wifi router that the WiFi internet connection is metered

Is it possible to have a Wifi router advertise that the Wifi is connected to internet over a metered connection (over a 4G usb dongle)? I know it's possible on client to set that the connection is ...
František Žiačik's user avatar
3 votes
0 answers
770 views

5 GHz AP Mode with Atheros QCA6174A chipset on CentOS 8

I am trying to set up an 5 GHz access point on a machine with an Atheros QCA6174A-equipped Wi-Fi card running CentOS 8. However, all 5 GHz bands are blocked (no-IR flag set) for operation in AP mode (...
EMC's user avatar
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3 votes
1 answer
4k views

System tray shows standard WiFi icon while VPN connected

Normally, when I connect to my VPN the WiFi icon in the system tray changes to what I believe is the wired network icon. See images below for example images. Wifi: Wired: Recently the icon is no ...
Tone's user avatar
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1k views

How can I delete a Windows Filtering Platform rule or restore WFP to default settings?

I am using Mullvad VPN client on Windows 10 1909 which under normal circumstances sets up Windows Filtering Platform rules that block all connections outside the VPN tunnel when the application is ...
Computer_User's user avatar
3 votes
0 answers
135 views

How to build a parallel, failsafe, redundant RTP wireless link

I have the following situation: A radio transmission studio is located in a town and the FM transmitter on the top of a hill 2km away with perfect vision. Currently the studio sends an RTP audio ...
EA2EGA's user avatar
  • 31
3 votes
1 answer
433 views

How to configure AP priority in netplan?

I would like to configure more than one AP in netplan, like this: wifis: wlan0: access-points: network1: password: "abc" priority: 0 ...
tollo's user avatar
  • 423
3 votes
0 answers
545 views

MacBook / OSX can't access router/gateway web admin page - but other devices in same network can

Problem I’m trying to access my router web admin page, http://192.168.0.1/, from my MacBook. I can easily access the web admin page from other devices, like my Windows machine and my iPhone. But not ...
user4029736's user avatar
3 votes
1 answer
87 views

"Category 6a is particularly resistant to interference from older Ethernet signaling..."

I'm going through "Unix and Linux System Administration Handbook", 5th edition. In chapter 14, "Physical networking" in the section on UTP cabling, it says: Category 6a is the cable of choice for ...
Atmaks's user avatar
  • 141
3 votes
0 answers
755 views

Set up mitmproxy in transparent mode on a docker container

Is it possible to turn a docker container into a gateway for a transparent proxy like this? I heard that you need to use macvlan or ipvlan, but what is the equivalent setup for the example shown in ...
charlieh_7's user avatar
3 votes
0 answers
1k views

New /etc/hosts domain not working when called with SSH from terminal

I am connecting via ssh to a remote server, as follows: ssh [email protected] The process works fine as I have the password to get into the server I need to work with. I wanted to set a name to the IP ...
uomoz's user avatar
  • 31
3 votes
1 answer
942 views

Activity Monitor in Mac not showing network usage

Have had Activity monitor open for the day in the background and have been tethered to my phone for the last couple of hours until I got a warning on my phone that I've used 1.3gb of data and my phone ...
Guy Park's user avatar
  • 131
3 votes
0 answers
348 views

systemd service error: no route to host after booting

I want my computer telnet to a remote machine (directly connected with Ethernet) when booting. I add feedback.service under /etc/systemd/system/ [Unit] Description=Feedback relay daemon Wants=network-...
CodePurin's user avatar
  • 435
3 votes
1 answer
256 views

Does VirtualBox's .ova appliance creator preserve port forwarding?

If I create a virtual machine in VirtualBox, set software on the machine to listen to port 1234, and configure VirtualBox to forward traffic on port 1234 to the guest, and then export it as an ...
Christos Hayward's user avatar
3 votes
0 answers
2k views

Connecting to wireguard on localhost

I want to be able having 2 wg interfaces on same machine and tunnel traffic from one to another. Every setup I found is basically begin with "setup your server peer on dedicated instance" but I need ...
gudvinr's user avatar
  • 53
3 votes
0 answers
6k views

set up Windows 10 PC as internet gateway for a Linux PC on local LAN to access internet

I have a Windows 10 PC with two NICs that I want to use as a gateway between a small LAN which is using 192.168.0.x IPv4 addressing and the internet. What I have set up is the Windows 10 PC with two ...
Richard Chambers's user avatar
3 votes
0 answers
438 views

Eclipse: Failed to connect sshd on "hostname" Auth Fail

I have the following issue when I try to start an ssh interface (shell) to a Unix host using Eclipse (Remote System Explorer) I think that there is an issue related to the (Generate RSA Key: ...
Lorenzo Castagno's user avatar
3 votes
0 answers
120 views

How to access Kubernetes runnning in Docker for Windows from another PC

I have a desktop PC, ALPHA, where I have installed Docker for Windows with included Kubernetes. I have a notebook, BETA, where I have installed kubectl. Both are connected to the same WiFi network. I ...
Alexey's user avatar
  • 143
3 votes
0 answers
10k views

how to get the same ip every time i start WSL 2?

Every time i start WSL i am getting a new IP on eth0, how i can make the IP static so every time i get the same IP on eth0?. $ ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue ...
carlos's user avatar
  • 153
3 votes
0 answers
169 views

libnl takes time to see a disconnected client

I am working on an embedded device, with a custom OS (Yocto on iMX6). The device use hostapd to create a WLAN. I use libnl to list the connected WiFi clients, my code is based on iw to get the ...
PierreOlivier's user avatar
3 votes
0 answers
2k views

scutil --dns and Network Preferences not matching up

I have a wireguard tunnel that I am configuring via wg-quick on macOS; my client-side config looks something like: $ cat /usr/local/etc/wireguard/wg0.conf [Interface] PrivateKey = <snip> # The ...
staticfloat's user avatar
3 votes
0 answers
1k views

How to connect to a torrent tracker running on a local host?

I want to share huge files via bitTorrent. I'm using Ubuntu 18.04. I've set up a tracker opentracker listening to port 6969, and a client kTorrent listening to port 6881. My network uses NAT. I ...
havon's user avatar
  • 113
3 votes
0 answers
1k views

Why is Task Manager's Network Usage off by about 50%?

This is an interesting thing I've noticed since my internet upgrade (up to 100MBit/s downstream) and I'm not really sure what exactly is happening here – which boggles me. :) This discrepancy seems to ...
Mario's user avatar
  • 4,296
3 votes
0 answers
3k views

IPCP: timeout sending Config-Requests

We have a problem with part of our devices which are using ppp to connect to the internet using 3G modem in US. The issue seems really odd as only few of the devices have this problem but it is a ...
REq888's user avatar
  • 31
3 votes
0 answers
279 views

IP forwarding not working within virtual environment due to IPTables

Update: I read https://unix.stackexchange.com/questions/126595/iptables-forward-all-traffic-to-interface and it looks like it has something to do with IPTables, duh, after following the accepted ...
Daniel's user avatar
  • 81
3 votes
0 answers
6k views

nslookup returns IPv4 and IPv6 of DNS and does not resolve names

I have no idea what I'm doing with DNS and know enough to know the extent of my ignorance, but I'm charged with trying to troubleshoot a remote device on a remote network, both of which I do not have ...
Rich Andrews's user avatar
3 votes
0 answers
130 views

Windows File Sharing does not work with firewall disabled

I have a Windows 7 computer which I am trying to use for sharing files over my home network (but not using a homegroup). Here is what I have tried so far. Network Discovery and File and Print ...
Arlen Beiler's user avatar
  • 1,640