Questions tagged [networking]

Managing and using network connectivity on a Ubuntu system

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Share Internet from Ubuntu Server 20.04 to Windows 10

this is my first post here so I appreciate every little help u can give me. The question is simple, i want my old PC with Ubuntu Server to share internet connection to a Windows 10 PC. I have a double ...
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How to fix an Ubuntu server losing its IPv6 address without any traces inside the logs

I have Ubuntu 22.04 LTS (GNU/Linux 5.15.0-1008-raspi armv7l) running on a raspberry Pi 3. For some reason, after around 2 days of uptime, it starts randomly removing its global IPv6 address. The IPv6 ...
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Using isc-dhcp-server along side an existing DHCP server for PXE

This may be more of a networking question but very long story short, I'm in the process of setting up a PXEBoot server (TFTP/HTTP) to automate network installs of Linux and the last thing I need to do/...
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Why can't Kubuntu see some Wi-Fi networks?

Here I installed Kubuntu, I look in the list of Wi-Fi networks and there, I see only a few. That is, the network of one phone sees and there is no other, everything would be fine, but it does not see ...
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Bluetooth Adapter not listed as a USB device

I was having a problem with Bluetooth and WiFi in my guest operating system (Windows 10) in VirtualBox. To give you some background - I am running Windows 10 inside VirtualBox as a guest OS, with ...
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iMac (Mid) 2010 - Slow WiFi

New member here. I have been running Ubuntu on an old Mid 2010 iMac and it does it's job. Mainly run a plex server on it. When i set it up i had to install drivers for the networking to work and it ...
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No internet in WSL 2 ubuntu , "n/a" in networkctl , "Failed to connect system bus: No such file or directory" when run "networkctl reload eth0"

i am running Ubuntu-20.04 in WSL 2 on Win 10. I have got no internet connection in WSL, ping 8.8.8.8 shows From <a ip> icmp_seq=1 Destination Host Unreachable networkctl shows WARNING: systemd-...
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22.04 LTS unable to print to “HP Neverstop Laser MFP 1202w” printer

Newly installed Ubuntu 22.04 LTS on a dual boot PC. It won’t print to the network attached “HP Neverstop Laser MFP 1202w” printer (Note: the printer works well with another PC running Ubuntu 20.04.4). ...
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New User needs help removing root kit virus

I clicked on a PUP pretending to be Norton and then subsequently installed Malware/Trojan. This virus overwrites the firmware of your router and redirects your DNS (doing a hardware reset does not ...
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Error while trying to connect to my samsug tv with org.gnome.NetworkDisplays on ubuntu 20.04

Following this this answer I tried to mirror my screen to my samsung TV, but it failed with an error. Flow: I installed the software using the guide I ran the sotware Saw my TV on the GUI First time ...
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Port 8090 seems closed even though it's open

I installed Jenkins on port 8090, tried disabling ufw and doing ufw allow 8090. yougetsignal.com is still showing that port as closed, and trying to open the jenkins webapp results in a timeout error. ...
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Wifi on BCM4364 using brcmfac driver and firmware

Where can I get the BCM4364 brcmfac driver for Ubuntu 20.04? "Firmware"="C-4364__s-B2/maui.trx", "TxCap"="C-4364__s-B2/maui-X0.txcb", "Regulatory"=&...
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iwd error: No default interface for wiphy 0

The iwd service starts just fine but when I try to connect to any network with WIFI Select Network I get the following error: Wiphy phy0 will only use the default interface No default interface for ...
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Need to restart Linux PC to access via SSH [duplicate]

Whenever I want to access my 'server' (quotations because it's not set up as a headless server, just used like one) via SSH, I need to restart it. Everything was working fine until around a month ago, ...
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Cannot connect to the internet after assigning Host-Only Adapter on Oracle VM Virtual Box Manager

I've setup Ubuntu Server 22.04 on Oracle's VM Virtual Box Manager on a Laptop running Windows 10. I've selected the "Host-only Adapter" since I need a static IP, and the previous Bridged ...
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Poor WiFi Signal on Ubuntu 21.10

I recently have started dual booting my work laptop with Kubuntu 21.10 and Windows 11 and for some reason the WiFi signal when running Kubuntu is extremely poor and near unusable. I am experiencing ...
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Ubuntu 22.04 LTS and Intel Wi-fi 6 AX201 troubleshooting

I looked and read through the other topics about iwlwifi and the Intel 6 AX201 (or similar), and yet I cannot find a final answer to this. In my case I've done some research and troubleshooting on my ...
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Connecting devices using SSH tunnels

Currently I am trying to connect my iSH app (Linux emulator for iPhone) to my Ubuntu computer. The problem is that i don't know how: I have tried many methods, but none of them seams to work. I am ...
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What are these 'Remote login' and 'File sharing' icons that I'm seeing under 'Networks'?

I'm new to Linux and currently running Ubuntu 22.04 LTS. I noticed recently in the drives section of my file manager(nautilus) that there are these two icons (image below) named 'Remote Login' and '...
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Setting up a bridge for host and vm

I'm having quite a lot of problems setting up a network bridge for both my host and my vm to use. The host (os of the server) is Ubuntu 20.04.4 LTS. The VM (using KVM and virt-manager) is TrueNAS Core ...
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Networking issues after upgrading to Ubuntu 22.04

I have upgraded my ubuntu machine from 20.04 to 22.04 but has landed into lot of issues. Only google surfing works, if I click on any link it doesn't work. My overall system has slowed down. Vpn doesn'...
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Network folder asks password everytime accessing files

Hi I am using USB HDD as NAS and I have shared it over FTP and SMB. From windows the network folder is mapped and it is getting acessed without issues. But from Linux I am getting error while ...
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Unable to access the internet on Firefox and Chrome in Ubuntu 20.04

I cannot access any webpage on my Firefox and Chrome browsers. I am using Ubuntu 20.04. I keep on getting "The connection has timed out" and the load time is extremely slow. Localhost is ...
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share a wired ethernet connection over wifi

I have an Ubuntu 18.04.6 home server, connected via wifi (wlp2s0) to the internet. It has ip 192.168.1.13 on the local home network. I want to connect a wired ethernet camera, that has a fixed ip of ...
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Gigabig USB Ethernet adapter at 100 Mbos

I have a USB 3.0 Gigabit Ethernet adapter (Sitecom LN-032) plugged to a USB 3.0 port. However, it's still set up as a 100Mbps: I suspect that some driver needs to be installed. However, the ...
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how to share a folder on xubuntu 20.04.4 LTS (server side, ubuntu studio to be right) with a windows 98SE client?

Hi everybody: as from title I've set up an xubuntu 20.04.4 LTS (ubuntu studio) as server for sharing a folder: I've followed this guide: guide to samba (chapters 2 and 3) and done several researches ...
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How do I find out whether I have a .local (mDNS) address, and what it is?

My impression is that Ubuntu 22.04 comes with avahi preinstalled. How do I most easily check whether the machine I'm using has a .local address, and if so, what that address is? I'm asking under the ...
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How to fix "Failed to set controlling terminal" and other compiler issues

I am using Ubuntu 22.04 with Code Blocks 20.03. All was working then I installed kernel 5.15.33-generic. Since then my system appears unstable, it switches perspective from default to minimal, it ...
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Raspberry Pi with Ubuntu Mate 20.04.1 (arm64) refusing SSH connection

I need to install ROS on a Raspberry Pi 4 Model B. According to instructions, this is better to do from an Ubuntu-mate distro following standard ARM instructions (http://wiki.ros.org/ROSberryPi/...
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Ubuntu 22.04 netplan with two interfaces. Public IP not accessible on the second interface

I have two interfaces on an Ubuntu 22.04 server hosted in AWS. Both have public IP addresses, however; only ens5 is responding to incoming traffic. When I run a tcpdump on ens5 I can see my ping ...
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How to configure Intel 3165 WiFi / BlueTooth on Ubuntu 22.04

My wife is using HP Probook 450 G3 with Intel wireless 3165 WiFi / Bluetooth. HP supports only Windows on that laptop. Windows works extremely slow since some Windows update. So, I recently installed ...
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Anbox internet connection doesn't work

Since Whatsapp announced they would stop letting Whatsapp run on my phone (Thanks Facebook), I have been searching for a way to run it on Linux (Kubuntu 20.04). My closest attempt is using Anbox, but ...
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with TCP NAGLE off, how much delay between send calls will prevent messages from being combined in one packet

I am sending via TCP multiple fixed length messages to a server that requires that messages not be split between two packets. I know that that is not the way that TCP works, but I have no control ...
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Ubuntu 20.04 won't load after reinstalling libnm0

Network manager has been a little buggy for a while. I found the solution here and i ran sudo apt install network-manager-gnome, which threw an error about nvidia public key. I solved it by following ...
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gui for Network connections

i am using standard Ubuntu 21.10 with i3 I uninstalled gnome completely with the built in gui-tool for Wlan/Lan conections. Is there an alternative for that? Or can i somehow only install the network-...
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Ubuntu automatically stitching from wired to wireless. How to stop?

It's a weird issue I'm facing. If the computer sits for too long, it defaults to wireless internet instead of wired. There isn't even any wifi for it to connect to. It just ignores the wired ...
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WIFI AP: Limited # of connections... Any 20+ STN USB dongle known to work?

for all of my IoT devices, I decided "hey, time for more security. Let's setup some NUC with onboard wifi to provide access to those, limit outbound connections, block incoming ones, and check ...
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rsyslogd: action 'action-3-builtin:omfwd' suspended

I want to send MongoDB logs to a Graylog server, and the related rsyslog configuration is as follows: $InputFileName /var/log/mongodb/mongod_27017.log $InputFileTag mongodb $InputFileStateFile mongodb-...
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Disconnected but not much in the logs

Can anyone give me some good pointers on why my Ubuntu Desktop (22.04) might lose drop Wi-Fi connection, maybe once a day or less. The only useful thing I see in the logs is: NetworkManager[1093]: <...
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DNS resolver keeps breaking

Every now and then, I'll try to ssh to something on my local network and I'll get: ssh: Could not resolve hostname pacman: No address associated with hostname As soon as I restart the DNS resolver ...
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How do I turn off "Energy Efficient Ethernet" on my ethernet card?

I recently switched to Ubuntu 22.04. Before that, I used Windows 10. I had to buy a new ethernet card (TP-Link TG-3468) because my mainboard's ethernet port stopped working. With the ethernet card, ...
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wrong DNS resolution

I have 2 servers with similar configuration but one of them give me different result from a nslookup command The first one is working correctly and here is the answer I have: Server: 8.8.8.8 ...
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Help with correct routing for Tailscale/Wireguard - really frustrated!

Running two VPS instances. One in Auckland, and an Oracle Cloud instance in Sydney. Auckland acts as a wireguard server - using PiVPN's build there, and I connect to the Sydney instance via the ...
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Why is my "third" ethernet interface "eno1" but others are enp1s0, enp2s0, enp4s0?

Just installed 22.04 Server on a box with an Intel I225-V Ethernet Controller and four external RJ454 connectors labelled, from left to right, ETH3, ETH2, ETH1, ETH0. lshw -class networkproduces the ...
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Unstable wifi with Qualcomm Atheros AR9462 card and Ubuntu 22.04

I have a problem with my wifi connection which is slow and unstable. I use a Qualcomm Atheros AR9462 wifi card and ubuntu 22.04. Does anyone have any suggestions? Thanks you
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Network unreachable error meets when downloading theme by system theme tool

I try to use the system theme manage tool to download some new themes but failed. The error is Download of "xxx" failed, error: Network unreachable. I checked that I can access the theme ...
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Gnome VPN connecttion "add" button greyed

I know this topic has came up multiple times but none of the solutions I have seen so far have worked for me. I want to connect to my fritz vpn but when I go to add a new vpn connection and press &...
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Ubuntu 22.04 LTS - QEMU-KVM & NetPlan - Bridge interface with multiple VLANs

Previously, when I wanted to set QEMU-KVM on my Raspberry PI, I did the following commands to have a bridge interface and all other bridges on multiple networks for my VMs However, after upgrading to ...
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Screen freezes after connecting to wifi

I installed ubuntu 20.04.3 on my Asus laptop, every time I connect it to the wifi after a few minutes its screen freeze. I can't move the mouse cursor, it is completely crashed. What should I do to ...
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Unable to edit Network settings, Polkit error

I have a desktop PC with Ubuntu installed, with Static IP address edited. Before the reboot, Internet it's working without problems, i can access the Network settings without problem. But after the ...
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