All Questions
Tagged with network-manager server
243
questions
1
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0
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236
views
Ubuntu 24.04 server with NetworkManager does not configure eth0
I installed 24.04 server on a Raspberry Pi 4. The initial boot recognizes eth0. After I installed NetworkManager, I created a netplan configuration for eth0, wlan0, and wlan1. Upon reboot, eth0 was ...
- 11
0
votes
0
answers
27
views
How can i bridge eth interfaces with no bridge (let me explain)
I have a device that has 3 ETH interfaces.
This way I installed the Ubuntu server on it to use the Pi-Hole application
I want to use my ETH0 to receive the Wan cable from my internet provider moden ...
0
votes
0
answers
28
views
1Gbe Interface stops working when MTU set to 9100 on 100G interface
I have a server with 2x1gbe ports LOM and a single port 100G nic.
Our 1gbe network is different than our 100G network and both have access to the internet. I would like to be able to use both ...
0
votes
2
answers
175
views
Two NICs on same network - one for internet, one for LAN
I have two NICs in my home server - both are connected to same network. One is 2.5Gbps (which I'd like to use for LAN - eth0), other is 1Gbps (which I'd like to use for internet-only - enp0s25).
What ...
0
votes
0
answers
27
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Internet adapter don't work properly with different subnet masks in a multi adapter PC
I'm having some troubles trying to config a triple internet adapter configuration in my 'home made NAS server', aka a old computer like a server, using Ubuntu desktop 22.04.4 with a SAMBA share for my ...
0
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0
answers
82
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Issue with dual-NIC clients and netplan swapping ethernet interfaces
Background: 1500+ stations running Ubuntu Server + ubuntu-desktop-minimal, most are still on 20.04, new stations are all deployed with 22.04 (with a ubuntu-desktop-minimal --no-install-recommends flag ...
- 11
0
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0
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73
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Simple eth0 config not working
I am a network guy but I am trying to set up a syslog and snmp server in gns3 using an Ubuntu appliance:
Linux Toolbox-1 5.15.0-91-generic #101~20.04.1-Ubuntu SMP Thu Nov 16 14:22:28 UTC 2023 x86_64 ...
0
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0
answers
92
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Ubuntu server cant ping outside network &| DNS (Temporary failure in name resolution)
My network on the server is not working, help much appreciated
default via 192.168.50.1 dev eno1 proto static
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
192.168.50.0/...
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0
votes
0
answers
40
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configured ubuntu server wifi via installation disk, unable to use Network Manager [duplicate]
I recently installed a Ubuntu Server from live ISO. During installation I configured a Wi-Fi network. However now, post-installation I am unable to use network manager (nmcli/nmtui) at all as it does ...
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1
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0
answers
60
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Cannot resolve hostnames on ping after upgrading from 18.04 to 20.04
I have recently upgraded a server running 18.04 to 20.04. The in-place upgrade seemed to go fine and installed without a hiccup, however the end goal is to upgrade to 22.04 and when I went to go run ...
- 11
0
votes
0
answers
207
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Network problem after update
I'm running Ubuntu 22.04 on a PC with 4 network interfaces: enp1s0, enp2s0, enp3s0 & enp4s0. I'm using enp1s0 (outgoing interface, configured by the cable modem using DHCP) and enp4s0 (static IP, ...
- 101
0
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0
answers
213
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Solved - Network Connection problem on Ubuntu Server Pro after Installing Kubuntu-Desktop
I cannot connect to network after installing Kubuntu Desktop on my Ubuntu Server Pro.
I recently installed Ubuntu Server Pro onto a machine using installer 23.08.01, which I upgraded to version 23.10....
0
votes
0
answers
63
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Ubuntu Server - Internet not working on a specific network connection
I run two home servers on which I've installed the Ubuntu 22.04 server. I also got a new network provider and a router, and one of the servers refused to just connect to the internet through that.
...
- 592
0
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0
answers
88
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Ubuntu hosting VPN for personal VPN network
This is probably a simple solution and I am missing something but I have a home network that does not have a static IP and I have a domain controller and a samba share on that DC, I want to be able to ...
0
votes
0
answers
426
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VPN connection in Ubuntu 22.04 throws "MS-CHAP authentication failed"
I have Ubuntu 22.04 and a VPN that allows me to work within the servers of the company I work for. Everything worked well until today.
Now, when I try to connect, it says "Authentication failed&...
- 103
0
votes
0
answers
31
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Running app/VPN for a single user
So I have done research in regards to installing an app for a single user, I have a VPN app which I can install on ubuntu desktop, but it installs system wide, on a second user account when I launch ...
0
votes
0
answers
190
views
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&...
3
votes
3
answers
410
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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 ...
0
votes
0
answers
89
views
Error when setting static IP
when I install DHCP the network service is normal, but when I set the static IP the network shows a question mark as shown. I am using Ubuntu 20.04 installed on VMware.
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1
vote
1
answer
2k
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ping works but internet connection times out [Ubuntu 22.04, ethernet connection]
I am currently connected to the internet through ethernet. However, I am not able to connect to the internet. On running the command
sudo apt-get update
I get
Cannot initiate the connection to ...
0
votes
0
answers
127
views
Error Network is unreachable for WIFI
For some unknown reason, WIFI stopped working (Internet via cable - works properly), when pinging - it gives the following ping error: connect: Network is unreachable.
I'm new to Ubuntu, can anyone ...
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0
votes
0
answers
143
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Network traffic monitoring for each user
There are several users in Ubuntu server using the network traffic. I need to monitor each users traffic usage. I used nethogs but apparently it gives me the answer for each process so when the user ...
1
vote
0
answers
969
views
Settings not getting saved when updating in NetworkManager
On Ubuntu 22.04, i am trying to update my VPN settings but the settings don't get saved, however if i create a new record for example, if i create a new VPN connection then the settings get saved.
...
0
votes
1
answer
3k
views
L2TP / IPSec VPN Issue
I am trying to configure L2TP client on our Ubuntu 22.04 Server. I have configured the credentials and see the following errors in the Log
May 2 09:31:39 nl-live NetworkManager[31815]: xl2tpd[31815]: ...
0
votes
0
answers
554
views
L2TP/IPSec VPN on Ubuntu Server
I am trying to configure L2TP Using IPSec on ubuntu server 22.04, i have added all the necessary details under Network manager but the VPN does not seem to work and I am not able to ping any network ...
1
vote
1
answer
120
views
Can connect from one VM1 to VM2 via ssh but can't connect from VM2 to VM1 via ssh
I have a networking architecture which is built like this:
A virtual machine which is called UbuntuLeft
A virtual machine which is called CentOS
A virtual machine which is called Ubuntu right
All of ...
- 11
2
votes
1
answer
8k
views
Network 'device is strictly unmanaged', trying to make static IP work
I have a Ubuntu 22.04.2 LTS machine here that needs to be set with static IP address.
I followed the Linuxize tutorial for employing netplan, plus the StackExchange update on the new syntax to set /...
1
vote
1
answer
2k
views
nmcli - all connections show "unmanaged"
I searched for an answer to this and found a few different things but none of them have resolved my problem.
On a fresh install of 22.04.1 (server - no DE)...
nmcli con show returns an empty line. (...
1
vote
0
answers
292
views
Internet connection broken after installing VPN
I installed https://hide.me VPN on my Ubuntu 22.10 server.
https://github.com/eventure/hide.client.linux
I was using XRDP to control the server with a GUI.
After I enabled the VPN, the XRDP connection ...
- 111
0
votes
1
answer
648
views
Migrate from ifupdown to netplan
I try to migrate from ifupdown to netplan, but the result is always not same.
What is the correct netplan configuration for networking configuration like this:
auto lo
iface lo inet loopback
auto ...
- 312
1
vote
0
answers
240
views
Connect Multiple Interfaces on Raspberry Pi
I use my raspi as a local DNS resolver (Pi-hole). My router has 2 networks "Home" & "Guest". As usual, the guest client can't reach my raspi as it is on the home network so the ...
0
votes
1
answer
1k
views
Network is unreachable / Temporary failure in name resolution
I've been using Ubuntu 22.04.1 LTS (x64) via VMWare (my main OS is Windows 10) for the last month.
Recently when I try to ping (www.google.com for example) I get
ping: www.google.com: Temporary ...
1
vote
0
answers
354
views
Ubuntu Server 22.04: connecting to a different router on home network doesn't allow IP assignment
My home network runs on 2 routers, with one upstream to the other. Recently I had to move my server to an ethernet port away from the one it was set up on, downstream to a different router. Said ...
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0
votes
1
answer
296
views
Ubuntu/OpenVPN - how to access private network when connection to public interface:
I use Ubuntu 20.04 and OpenVPN.
This is my server network interfaces:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:...
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-1
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1
answer
663
views
How to connect 2 servers to each other as double vpn?
I have configured an L2TP/IPsec vpn server (A) on Ubuntu, and i want to connect this vpn server to another one (serverB). Because I live in Iran and the internet is heavily censored by the government. ...
- 1
0
votes
0
answers
489
views
Lost network access after updating (22.04.1)
I have a computer that I use as a home server that runs ubuntu server. Prior to this the last time the computer was updated was around 1 week ago. Today (2022/09/25) I performed an update and lost the ...
-1
votes
1
answer
675
views
DHCP server on ethernet port, keeping WiFi connection to Internet
As an initial note, I am using latest Mint, however I'd prefer a general (Ubuntu/Debian or even wider) solution, possibly for headless CLI-only too. Though I understand that may not be possible.
I ...
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1
vote
0
answers
4k
views
What is the default Ubuntu Server 22.04 network renderer?
This is a clean, default Ubuntu Server 22.04.1 LTS install and I have changed no actual network settings, only ssh configuration. Does my system use networkd or NetworkManager by default? I do not ...
- 11
0
votes
0
answers
742
views
network disabled after installing ubuntu server on virtual machine
I installed ubuntu server downloaded from here Then I found network is disabled:
Besides, I found the network-manager was missing after I tried to restart the network-manager according this post. ...
- 121
0
votes
2
answers
786
views
Ubuntu Server 22.04 LTS not finding iPhone Hotspot?
I'm trying to connect to an iPhone 12 Pro Wifi hotspot but nmcli won't even list the SSID. Force connecting to the known SSID obviously also doesn't work. I am able to connect to it using other ...
- 101
0
votes
1
answer
1k
views
(Ubuntu Server 20.04) Connecting Two Servers Together Through Network Switch
I am trying to connect two servers together through a network switch. I've tried researching this, but all of the good examples are from the pre-'network manager' era.
So, my setup consists of two ...
0
votes
0
answers
194
views
network is down for 5 min and up again for 3 min
I have started to see a very weird behavior on Ubuntu 20.04.4 (5.4.0-121-generic) when the network is going down for 5 minutes and then is up for 3 minutes.
The strange thing that when the network is ...
- 99
1
vote
1
answer
234
views
Why is Ubuntu 20.04.3 internet access not working?
My Ubuntu OS is connected to the my working internet network, but any internet-reliant services have not been functioning properly. This includes downloading anything (including any packages from the ...
- 21
0
votes
1
answer
996
views
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 ...
- 21
0
votes
0
answers
4k
views
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 ...
- 1
0
votes
2
answers
6k
views
Fail to up interface wlan0 in ubuntu server 22.04 Raspberry Pi
Im having issues after installing ubuntu server 22.04 on raspberry pi 4
The interface wlan0 is down.
After following the official tutorial from ubuntu (https://ubuntu.com/tutorials/how-to-install-...
- 3
0
votes
1
answer
220
views
PuTTY connection error after NetworkManager changes
I am using Ubuntu server 20.04. I switched network settings, changed Netplan to NetworkManager. This is required for L2TP/IPsec vpn connection using NetworkManager.
Further, after setting a static ip ...
- 31
0
votes
0
answers
354
views
Configure static IP scope via nmcli
I'm trying to setup a network bridge on a server using nmcli.
The bridge should have multiple configured static IP addresses with a scope link.
This is easily done via ip command like so: ip addr add ...
- 11
0
votes
2
answers
215
views
How I can update DNS in /etc/resolve.conf from /etc/resolvconf/resolv.conf.d/tail without rebooting system
How I can update DNS in /etc/resolve.conf from /etc/resolvconf/resolv.conf.d/tail without rebooting system
I made below entries in file
root@server1:/etc/resolvconf/resolv.conf.d
# cat tail
...
- 1
0
votes
1
answer
1k
views
Ubuntu 20.04.3 LTS server installation wants to use wifi instead of ethernet
I wanted to install Ubuntu 20.04.3 LTS Server but everytime I get to the network connections it shows only wifi even tho I already plugged in an ethernet cable, it also wont show any way to set it to ...
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