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.
22,666
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Connecting to my Spectrum Wi-Fi on Ubuntu not working
I was able to install Linux alongside my Windows OS (dual boot) but now I'm having trouble connecting wirelessly to my Spectrum router and modem. I called technical support at Spectrum but they weren'...
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How to run command when a specific network interface has low outgoing bandwidth for a specific time period?
How to run command when a specific network interface has low outgoing bandwidth for a specific time period?
enp7s0 [192.168.0.101] (1/4):
=============================
Incoming: ...
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3
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1
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91
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Unable to ssh over WAN
System:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.6 LTS
Release: 20.04
Codename: focal
Openssh version:
$ ssh -V
OpenSSH_8.2p1 Ubuntu-...
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Overview of Ubuntu Networking
I use Ubuntu to run quite a few NX Witness Video Surveilance systems in varuious networking setups. Usually just a flat network with a single NIC server. But sometimes we run dual NIC's. I can get ...
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60
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Wifi RTL8852AE not finding network, new install of ubuntu 22.04 over Windows 11
So, I guess that there's something wrong with the drivers, since after a research i saw that for some reason that Wireless Network adapter is not working in Ubuntu.
I followed this instructions [https:...
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42
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Wifi connection loops on ubuntu
I'm no expert in networking so I think I need a helping hand.
I installed ubuntu 22.04 yesterday and connected to my home wifi without any problems (I think, because I quickly switched to a wired ...
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30
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port 5666: Connection refused. In nagios Core
I have a Nagios core installed and running, and I was trying to setup a Nagios remote host in ubuntu server 22 LTS version. I have done all the for setting up remote host, the same is showing in the ...
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1
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337
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\\wsl.localhost is not accessible. Open folder error
I want to access wsl folder in File Explorer however I got this error
\wsl.localhost is not accessible. You might not have permission to
use this network resource. Contact the administrator of this ...
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34
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Port Forwarding to vboxnet0 with saving client's real IP
I set up the internet on a virtual machine that is running through VirtualBox and set up port forwarding. First, in rt_tables of Host Machine (iproutes2) I added this:
100 vm0
Then I run this:
ip ...
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1
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56
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Unable to establish network route
I am struggling to establish a network route from my laptop to another device. I will admit that my networking background is lacking, so sorry for the ignorance. I have the following setup:
[Device-A] ...
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60
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DNS issues on Ubuntu 22.04.3 headless server
Background
Trying to configure a headless plex server on a little Optiplex machine I bought. Everything has gone smoothly until I try to claim my plex server and it turns out there are DNS issues on ...
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ping ubuntu WSL Ping in the domain (Ubuntu and Windows10)
On the PC PC-XXXX I have Windows 10 and in them through WSL2 I have installed Ubuntu 20.04.
In this Ubuntu I enter command which returns IP address
server@pc-xxxx:~$ hostname -I
173.30.161.185 -- this ...
- 119
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25
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Wi-Fi problem on Asus Laptop
My laptop sometimes loses the Wi-Fi signal. I had basically thought it does because of low battery and changing a power profile, but I understood over time the problem appears when my laptop even is ...
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something went wrong when I tried to use xrdp remote control
I have a question: When I use XRDP for remote connection, I get the following error:
[20230823-20:42:47] [ERROR] g_tcp_bind(9, 6010) failed bind IPv6 (errno=98) and IPv4 (errno=22).
Upon checking, as ...
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Create multiple proxies on the same server subnet
How to place multiple proxies on the same subnet using the same port?
For example:
..***.13:8000
..***.14:8000
..***.15:8000
The server is on Ubuntu 22.04 LTS.
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46
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Ubuntu 22.04 flannel cni0 degraded carrier
I'm working with kubernetes on Ubuntu 22.04. We can see networking issues showing up in the syslog with flannel. In the logs you can see various networking links going up and down after 2s. The cni0 ...
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Can only browse the internet with Chromium on 20.04 - DNS issue?
I can browse the internet with Chromium on Ubuntu 20.04.
I cannot use Firefox and I cannot do apt-get update:
$ sudo apt-get update
Could not resolve 'actiontoad.canonical.com'
# etc...
I assume my ...
- 77
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Unable to access to internet on ubuntu machine connected to windows machine using Ethernet
I have connected my rasberry pi running Ubuntu 20.04 using Ethernet to my Windows laptop. I have set static IP and subnet mask of Ethernet port on Windows laptop as follows:
I have enabled Internet ...
- 153
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1
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92
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DNS_Probe_Possible
I'm having an issue where I'm unable to connect to the internet
Whenever I open any browser, I get the error "DNS_Probe_Possible"
Here's my basic system info:
Distro - Ubuntu 22.04.2 LTS
...
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88
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Very poor internet connection and drops on Ubuntu 22.04.3 LTS
After some update on my Ubuntu 22 LTS, I've got my wired internet connection to behave very strange. At first, it was fine but after few minutes it becomes to dissappear like I have no internet ...
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1
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107
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New Hardware Setup, fast LAN Speed but slow internet speed when compared to other devices on network
I am going a bit crazy with this problem, it's been a week now. To start I am aware of MB and Mb, so assume I am using them correctly.
I recently setup new Hardware to use as a headless server, i5-...
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179
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Can not connect Internet on WSL2 Ubuntu 20.04
$ ping google.com
> ping: google.com: Temporary failure in name resolution
I am working on Ubuntu 20.04 LTS/WSL2. I using dns proxy server of 192.168.91.4.
on Windows.
>ipconfig
Ethernet ...
-2
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1
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33
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Ethernet won't work after reboot, Says my network is unclaimed
I've tried a bunch of stuff already looking through many forums but alot of the stuff requires me to have internet connection. I don't have one sadly. I do sudo lshw -c network and all it just says my ...
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24
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Making koha and dspace available on a network
Recently, I installed Koha on my Ubuntu 20.04 system. I was informed that extensive configuration isn't necessary; I just need to ping the IP. However, I'm unfamiliar with these steps. I'd like to ...
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32
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Second ethernet port missing
From a couple of weeks I have had two ethernet ports on my ubuntu 22.04; one was integrated and the other one was just added with a board on the PCI bus.
They was named enp3s0 and enp4s0
Today the new ...
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1
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101
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Ubuntu 20.04, Cannot ping gateway
I have a fresh install of Ubuntu 20.04. Connected to ethernet getting dhcp setting automatic from modem.
Gateway 192.168.2.1
Ubuntu 192.168.2.100
Home device 192.168.2.21
Home device is able to ...
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21
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Can't transport Ubuntu to another machine - fails dhcp connection
I have an application running under Ubuntu 18.04 server which I've always been able to clone and move to another machine. When I create a 20.04 drive, I can move it to another machine with the same ...
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25
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Copy info from DHCP to Manual settings in Network Manager?
What I want to achieve is to get all info from DHCP (DNS servers, search domains, IP) as the starting point for my manual settings.
Example: what I do right now is to set is as Automatic and then run ...
- 220
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78
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wireguard + ufw = unable to limit access to specific port
So I'm trying to limit access to port 5432 (postgres) by using ufw and unable to do so. The connection is allowed still
sudo ufw deny 5432/tcp
sudo ufw route deny in on wg0 from 10.0.10.2
root@vpn-...
- 131
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44
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Ubuntu not connect internet
My ubuntu server 20.04 one day suddenly lost its network and when ping google, the program said:
Temporary failure in name resolution
And sometimes spam out 5-6 lines like that:
[10996.368815] r8169 ...
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3
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429
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Ubuntu 22.04.3 LTS - Wired network connection randomly breaking until reboot
I have a mini PC I use as a home server running Ubuntu 22.04.3 LTS. I've had it for several months now with no issues but as of a week or so ago it has started randomly losing connection to my network....
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38
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Unmounting Synology NAS drives before from Linux machine before shutting down the drives
So I work in a lab which has a Linux machine (22.04 LTS jammy) as the main computer to manage a file server. The Linux machine has a network interface that allows multiple computers in the lab to ...
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19
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Ubuntu wont connect to upgraded WIFI
Ubuntu 22 wont connect to our upgraded corporate WIFI, but will connect via cable. I dual boot windows 11 for such occassions, and it connects fine. It has been suggested our (very agressive) ...
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26
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SELinux enforcing blocks network interface
I have installed SELinux on an Ubuntu Pro Server with the following packages:
policycoreutils, selinux-utils, selinux-basics, auditd.
The problem appears when I set SELinux policy to "enforcing&...
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2
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125
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Yoga 260 on Xubuntu 22.04 - Wifi not working at all
I have a Lenovo Yoga 260 here and have problems to get Wifi working. Its exactly this model:
$ sudo lshw
yoga
Beschreibung: Notebook
Produkt: 20FES3TE00 (...
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54
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Associate Loopback interface with VRF
I have multiple VRFs in netplan and each of them has an associated physical interface.
Beside this I need Loopback interfaces with different /32 IP addresses and I would like to bind them to specific ...
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24
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Netplan 2 Interfaces, same IP Load Balance?
Is there a way to load balance with netplan between 2 interfaces that have the same IPs in my machine?
My current configuration is like this:
network:
version: 2
renderer: networkd
ethernets:
...
- 344
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38
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Manually search and install WiFi driver [duplicate]
I have a MSI Prestige 14 in which I'm installing Ubuntu 22.04. However, both the live session and the installed OS seem to not find my WiFi card and only Ethernet conection options are aviable. The ...
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3
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361
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2 Ubuntu servers, A is connected to B via ethernet. server B has 2 NIC, one of is connected to the internet. A cannot see B or the internet
I have one ubuntu server running 20.04 with 2 NIC – one connected to the internet gateway and the other connected to another ubuntu server running 22.04. I cannot get the computer running 22.04 to ...
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69
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Brother MFC-J470DW (network printer) not working on Ubuntu 22.04
I have a Brother MFC-J470DW network printer. For some reason the printer won't print. I have correctly downloaded the drivers using the install tool on the Brother website. I entered the IP address ...
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24
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Persistent accessibility to a local network shared folder on Ubuntu
How can I ensure persistent accessibility to a local network shared folder located at /run/user/1001/gvfs/afp-volume:host=test.local,user=anonymous,volume=Public/Shared/Test on my Ubuntu 23.04 machine?...
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32
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Connecting to Ubuntu using ssh over Ethernet
I have given static IP 192.168.137.20 with net mask 255.255.255.0 to my windows laptop port:
Then I connected my rasberry pi (which runs Ubuntu 20.04) using USB and ran following command to also give ...
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50
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Ubuntu server pingable but stuck at startup waiting for network to be configured
When starting up a fresh install of the Ubuntu 22.04.3 LTS Server, I see it is waiting for a long time at the line below before finishing up the startup.
A start job is running for Wait for...e ...
- 111
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21
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routing traffic between two vpn
I have two VPNs. one is Openconnect for my company sites and the other is Windscribe.
I need only to pass traffic of the company's sites Ips, starting with 172 from Openconnect and any others Ips to ...
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1
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106
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Manually installed wifi driver for Realtek b852 stops working until restarting the computer
I run Ubuntu 22.04 to a on "hp probook 455 g9". As the wifi wasn't working at first, 7 months ago I asked how to install the wifi driver in the first place, here: Problems with manual ...
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33
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Decrypt LUKS partition automatically if part of a defined network?
I do have an Ubuntu 22.04 server running at home with LUKS-encrypted root and data partition. At the moment I have to type in the passphrase to unlock the partitions which prevents unattended reboots (...
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48
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Connection via SSH works once or twice then never again for that client
I have recently set up a Ubuntu Server minimized. I initially used the server through an SSH with client1 but after one use I kept getting Connection Timed Out when attempting to ssh from client1. I ...
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66
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The LAN device IP is not accessible when a SSH session is not running
Hi there I have a python script which reads data from different IP addresses in LAN, The script runs in a Edge Device with Ubuntu 20.04 LTS focal installed every 5 min using a CRON job. The problem is ...
- 111
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25
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How to use vpn in shared bridge connection
Laptop is connected to wifi. Laptop also provide internet to another machine (M1) with ethernet port using bridge connection. Now when i use VPN in laptop, it works fine but the vpn is not available ...
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70
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Ubuntu 22.04.02: wired ethernet e1000e stops working after resuming from suspend
Recently installed a wired ethernet to a long running Ubuntu 22.04.02 system, and the ethernet network fails to reconnect after resuming from suspend. The wifi works fine, it's only the wired ethernet ...
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