Questions tagged [networking]
Computer networking is the connection two or more computing devices for transmitting and sharing data. The devices use common communication protocols over a physical or wireless connection. Use this tag for questions about managing and using network connectivity on an Ubuntu system.
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How to match the --out-interface to the same --in-interface in iptables
The system have multiple interfaces: eth0, eth1, eth2, ... br0, br1, br2, ...etc.
The following rule will allow packets from "br0" to "br0":
iptables -A FORWARD -i br0 -o br0 -j ...
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Cannot establish HTTP connection with VPS although ufw is allowing outside traffic
Here is the output of sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip
To Action ...
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29
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Bluetooth Connecting/Disconnecting
I'm running Ubuntu 24.04. I'm having an issue where both my Xbox controller and Pixel Buds are connecting and disconnecting about every 30-60 seconds. No audio ever comes through the buds, and the ...
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DNS problem for only some devices on our network
I'm running into a DNS issue in our office's network. We had a power outage and when the router rebooted a few of the servers on our network started to have problems connecting to other devices on the ...
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Ethernet not working on Ubuntu through the main router
I set up a PC about a month ago and put Ubuntu on it to host a Minecraft server. It's been running excellently, but one night I opened my router's webpage and opened the port that Minecraft uses and ...
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connecting two linux machines with ethernet cable error
I have two running machines That I want to communicate between with an ethernet cable.
machine A)
ethtool -i eth2
driver: nvethernet
version: 5.10.192-tegra
firmware-version:
expansion-rom-version:
...
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1
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22
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Unabe to do KVM networking over WiFi Interface
Running Ubuntu Server 24.04. I am trying to connect a Debian VM (KVM) to be accessible through my Home Network. Host to VM communication is not necessary.
On the host Machin there is a Lan port that I ...
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Ubuntu 20.04.6 (kernel 5.4.0) - Wi-Fi Driver Intel AX211
Looking for guidance/documentation I can follow, to get wifi firmware/drivers built/backported and installed for my older kernel version.
Trying to get a very new card:
Internal Wi-Fi Antenna Intel Wi-...
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How to start and deploy DFX 0.9.3 in VSCode?
This is the error I get:
Error:cannot parse provider URL
Caused by:invalid port number.
I have tried almost everything, but I could not find any solution.
dfx replica --port,
dfx bootstrap --port,
...
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22
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Is it possible to combine the bandwidth of wireless and wired NICs?
My server (using Ubuntu server 22.04 LTS) has a 100M wireless and wired network card, and I'm using it to run a website (pure IPv6).
Both NICs are currently connected to the same router, is it ...
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I cannot connect to the Internet (Ubuntu 24.04 LTS)
My computer won't connect to the Internet.
I installed Ubuntu on a PC with Windows 10, I replaced Windows 10 with Ubuntu during the installation. When I was on Windows 10, the internet still worked as ...
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32
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After installing Ubuntu 22.04, can't see home router wifi radio, even though adapter works fine!
My laptop works fine with other wifi in other places (even after I installed Ubuntu, 22.04); But somehow it lost vision of my Home Router signal! I run both Windows 10 and Ubuntu on it and both OS don'...
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Did I bloat my network devices? <nmcli d s | grep ^$IFNAME> Help
I'm a Linux noob so bear with me. I'm in the process of trying to figure out how to use my device as a WiFi extender using NetworkManager to create a persistent hotspot. I tried out multiple methods ...
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How to get L2TP protocol on *ubuntu system while being offline?
My ISP uses L2TP to provide Internet access. So I need L2TP to connect. On the other hand, I need access to install L2TP through that strange Linux online installing system. There is no L2TP out of ...
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91
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ThinkPad T14s Gen 5: How to use / unlock the RM520N-GL modem
I've recently been struggling with the problem written in the title. Lenovo sells this Laptop with official Linux support and also allows you to buy this modem for an additional ~$300. However, it ...
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6to4 tunnel not working on ubuntu servers
I have two servers (both ubuntu 22.04), one doesn't have a public IPv6.
I'm trying to create a local connection between them using 6to4 tunnel (they have eachothers v4 ping).
I've created /etc/netplan/...
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52
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Is there a way to keep wifi on during sleep mode?
I'm using Ubuntu 24.04, i have switched off the power saving mode of WiFi, but still during sleep mode it gets disconnected first then during login it gets connected. I want the WiFi to not get ...
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Network/VPN/Browser problem
I have Ubuntu 22.04.4 LTS 64 bit, and I know nothing about computers, basically all I can do is deleting cookies in browser. I bought my computer from a friend who said Ubuntu was very simple, but ...
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Ubuntu 22.04 update disconnects Windows 11 network services
I'm running a Ubuntu 22.04-based file server (Samba to Windows 11 clients). Several weeks ago I ran apt upgrade. My ssh connection dropped part way through the upgrade. From that point I can get a ...
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How to troubleshoot "Operation not supported (-95)" output from "iw dev wlan0 set 4addr on" command?
I am trying to follow this solution in effort to solve my question/questions posted on AskUbuntu and Nvidia Jetson Developer Forum
I am running Ubuntu 20.04 on an Nvidia Jetson. The Jetson has a ...
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Help with Ubuntu 24.04 LTS and slow internet connection
TLDR:
Installed ubuntu 24.04 lts and suddenly my internet connection is super slow. (13Mbps compared to 580Mbps for other devices). Any suggestions?
Problem:
I used to have a windows 11, moved to ...
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Netplan matching modems that change names
I have the following netplan file to setup a system with ethernet interfaces and multiple modems.
network:
version: 2
renderer: NetworkManager
ethernets:
eth0:
dhcp4: false
...
-2
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1
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28
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Network file configuration issue [closed]
My version is 18.04 after configuring static ip in yaml file, i am getting below error.
invalid yaml mapping values are not allowed in this context
I need help on configuring Static file.
Regards
...
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148
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Network/DNS issues on 22.04.4
Im facing strange issue on virtual Ubuntu 22.04.4 server (VM). Few days ago it started to fail during basic network communication. I can ping to IP adresses but when I try ping by name it returns that ...
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Setup Static IP for USB Ethernet Adapter Ubuntu Server
im using a USB Ethernet Adapter for my machine and I would like to setup static IP for that. Ive been following tutorials from other sources but it only applies to cable ethernet.
Im using Ubuntu ...
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Shut lid on laptop, lose network connection
As title says. When I close my laptop lid, and reopen it the internet has gone. I have to reboot to start it up again. Running Ubuntu 22.04.4 LTS
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run /etc/rc.local after restarting systemd-networkd.service
platform: ubuntu 22.04
I am performing advance routing and and I have saved all the commands in the /etc/rc.local file.
the problem is once the systemd-networkd.service is restarted, the routing ...
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123
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Ubuntu Server 24.04 - Suddenly no Network Interface working
I hope someone can help me becaus I have no idea.
This evening my ubuntu server 24.04 (installed a few weeks ago and running without any problem) stopped the network connection.
I do not get any ip-...
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Where to get current http_proxy setting
I have an Ubuntu (22.04) machine, where the proxy is set from GUI.
I have a job running in crontab. How can I access the actual proxy settings from the cron job? In normal shell, there is an env ...
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Difficulty in connecting TP Link Wifi Extender with Ubuntu 24.04
I have 3 TP Link Wifi extenders (2 different models) and can not connect to any of them in Automatic mode in Ubuntu 24.04. Connecting directly to my hub works OK. Manual configuration of IP addresses ...
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28
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Unable to access NAS drive in Dolphin file manager
Using Ubuntu 22.04 with Dolphin Version 21.12.3
I have a Synology NAS drive on my network. I can access the drive via Nautilus from both my computers and also by typing in the IP address in a Firefox ...
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33
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Problem in configuring network on RX1 board with Ubunutu 20.04
I am configuring an Ubuntu 20.04 on a RX1 board which is based on Rockchip RK3588 SoC
I have installed the image and fired the system with DHCP and was working, after that I changed the configuration ...
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VOIP Error Can't Connect, No Response from server
So this is for my high school project, and I just learning Ubuntu and want to make a VoIP call from one phone to another, but when connecting it says no response from server.
I tried following the ...
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netplan config multiple nic dhcp and fixed on different network
I'll try to be as clear as possible...
I have tree computer, my desktop witch have a two nic, one 1gb witch is connected to the router in dhcp to the net (192.168.1.X), one dual 10gb nic connected to ...
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I am connected to every single wifi network simutensly
My wifi was lagging, and then a game I was playing crashed. I look at my wifi and it says that I am connected to every single one at the same time, even my neighbor's ones. Then I check my connections ...
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1
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95
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No wifi on Asus Vivobook (Kubuntu 24.04)
New to Kubuntu as of yesterday, on an Asus Vivobook laptop. I have a USB wifi dongle that is recognized and allows me to connect to wifi, and after the first time I ran apt update & apt upgrade ...
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Ubuntu 22.04.3 LTS ERR_ADDRESS_UNREACHABLE
I am a new user of Ubuntu and have version 22.04 lts.
every time I turn on the computer and use the internet using WIFI, chrome returns: ERR_ADDRESS_UNREACHABLE for most websites I try to access. I ...
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SHA256SUMS and SHA256.gpg problems
Hi: ¿where can I get the SHA256SUMS and SHA256.gpg for UBUNTU 24.04-ISO? I can not find in ubuntu.com. It is so hard to find.
Thanks
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Firewall to white- or black-list incoming requests
Well over a decade ago, when I was a Windows user, I used a Kaspersky firewall that would pop up when an application wanted was receiving a connection and allow me to allow or deny such connections.
...
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How to make backend server hosted by Ubuntu Server VM (hosted with Prxmox) accessible from public network?
I have set up a yaml file in folder '/etc/netplan' following the template:
network:
version: 2
ethernets:
eth0:
dhcp4: false
addresses:
- my public ip from 'curl ipinfo.io/...
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Force network manager to always connect to highest autoconnect-priority network even when already connected
I am using Network Manager (nmcli) to configure two connections to two different Wi-Fi networks wifi1 and wifi2.
I have set up a higher connection.autoconnect-priority for wifi2 (let's say 2) than for ...
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What configurations do i have to do to install Stable Difusion in an Ubuntu Desktop and be able to use the URL in another compter in the same network?
I have stable diffusion with automatic 1111 webui in machine 1 with Ubuntu Desktop, i want to be able to access that URL from machine 2 also with Ubuntu, both computers are using the same modem (one ...
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1
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56
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No wifi driver for RT5370 Wireless Adapter in 22.04
Ubuntu 22.04 on Orange Pi 5 board. There is no wireless interface after I insert WiFi USB adapter. The output:
$ lsusb
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device ...
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14
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Problem in connecting to a wifi network in Ubuntu virtual machine
I recently downloaded Ubuntu virtual machine in my windows 11 operating system. I want to know how can I connect to wifi network. I am not able to do so.
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WIFI and ethernet not working
I have asus laptop dual boot {Ubuntu 24.04 LTS/Windows 11}. Wifi is only connecting to a specific wifi, while ethernet is never been able to connected to.
scilab@ranzan:~$ sudo lshw -C network
*-...
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On raspberry pi 3 with Ubuntu 24.04 server (64bits), impossible to configure eth0
With a fresh install of Ubuntu 24.04, configured through cloud init (this added wifi config, username and ssh key).
On start, the wifi is correctly configured, but the LAN interface is not configured. ...
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Ubuntu 24.04 PXE UEFI IPv4 boot
I have successfully configured grubx64.efi, and is able to launch
grub.cfg menu that will then load casper/vmlinuz and casper/initrd from the Ubuntu 24.04 Desktop AMD64.iso image.
set casper_path='iso/...
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Which app or service connected to a specific domain?
How do I find out which app or service tried to access a particular domain or url?
Tried searching for this here and other websites but not getting relevant results.
I have the Gnome Logs program ...
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88
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Network Card Wont Come Up
I have a network card in an Ubuntu machine that will not come up (as in link down, layer 1 problem). The driver is loaded, as shown below:
$ ethtool -i ens8
driver: r8169
version: 6.8.0-35-generic
...
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Ubuntu can't see shared folders. Only sees Print$
I have a Ubuntu setup on a macmini acting as a file server. I have set up my smb.conf to share my folders.
I can see the folders when I access them from my Win10 machine and iphone (using Filebrowser) ...
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