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.
14,635
questions with no upvoted or accepted answers
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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 ...
3
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0
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76
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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, ...
3
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107
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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....
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790
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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....
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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 ...
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585
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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 ...
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739
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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 ...
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631
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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: <...
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answers
169
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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 ...
3
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answers
2k
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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 ...
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436
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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 ...
3
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1
answer
1k
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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
"...
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answers
650
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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 ...
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9k
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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 ->...
3
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485
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A lot of jitter when running a torrent client
I've been running into an issue that is making me tear my hairs out. In my network, whenever I run a torrent my network clogs up. I experience packet loss and a very high ping. I've limited the ...
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3k
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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 ...
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66
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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 ...
3
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1
answer
2k
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How to avoid TCP/IP Fingerprinting
I have the following setup:
+-----------+ SSH Tunnels Over Socks5 Proxy +--------------+
| | | |
| Linux PC +-------------------------...
3
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781
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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 ...
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2k
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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 ...
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2k
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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 ~ (...
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132
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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 ...
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2k
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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 ...
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2k
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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 ...
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1k
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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.
...
3
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163
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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 ...
3
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answers
781
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 (...
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1
answer
4k
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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 ...
3
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0
answers
1k
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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 ...
3
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answers
135
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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 ...
3
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1
answer
438
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
...
3
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answers
547
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 ...
3
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1
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87
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"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 ...
3
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answers
761
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 ...
3
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0
answers
1k
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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 ...
3
votes
1
answer
953
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 ...
3
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answers
352
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-...
3
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1
answer
257
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 ...
3
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0
answers
2k
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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 ...
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answers
6k
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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 ...
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439
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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: ...
3
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126
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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 ...
3
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10k
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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 ...
3
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169
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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 ...
3
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0
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2k
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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 ...
3
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1k
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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 ...
3
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1k
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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 ...
3
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3k
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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 ...
3
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280
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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 ...
3
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6k
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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 ...