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.
23,121
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DHCP does not work
I'm trying to config a notebook as router, with 3 NICs, 2 used to connect to internet (with modems with DHCP servers embeded), and 1 to connect to LAN, with a switch (I want to use an ubuntu dhcp ...
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Airdump showing many BSSID for one router
As my title suggests, I have problem about airdump because I saw neighbor's wifi just showing 2.4ghz and 5ghz with one BSSID and ESSI (Thuan Ky), so for example, I sent image above, "Deco E4"...
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systemd-networkd-wait-online service timing out during boot
I have been this issue for quite a while so today I have tried a suggestion I found online and running systemd-analyze plot and checking the output.
I'm attaching the SVG file here because unless I am ...
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Apache2 gives 403 when serving websites outside /var/www/
Why does Apache2 give 403 when serving websites outside /var/www/?
I have the following configurations on my local machine for development and they worked perfectly fine before in my old machine.
/etc/...
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How to setup ubuntu host to provide internet for guests on private subnet?
As a developer I am trying to setup vm guests on ubuntu 22 host (virtualbox) to be able to reach the Internet. The twist is I am not running an external router on the same private subnet, so I suppose ...
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I have Lenovo legion y540 and Ubuntu 20.04 on it , i have some probems because my wifi icon is disappear and i can't also run internet with ethernet
I was trying to download my gpu drivers because it isn't found after i finish with the same steps my friend try and done it need to reboot and when it open i can't find the wifi icon and also touch ...
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Unable to mount Android phone via SSH on Ubuntu 20.04
Following all of the steps outlined in this answer, on the thread titled How to mount Android external storage over WiFi instead of USB, I still can't figure out how to wirelessly mount my Android ...
- 459
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Cannot initiate the connection to it.archive.ubuntu.com:80 (2001:760:ffff:b6:4:100:0:70). - connect (101: Network is unreachable)
I'm setting up a new Ubuntu 20.4.6 LTS installation on a PowerEdge R230.
All went fine, except for the fact that when i try to run a sudo apt update i get this error :
Cannot initiate the connection ...
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78
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Changing netplan Subnet mask on Ubuntu Server makes server unreachable
I am trying to widen the subnet on an Ubuntu server (also runs DHCP) so I can put my IoT devices on a different subnet - I currently use 192.168.1.x - I want to put the devices on 192.168.2.x and 192....
- 101
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Static IP on Ubuntu Server [duplicate]
I'm trying to setup a static IP on Ubuntu Server, but I’m not able to set 192.168.16.244 as you can see.
Do you have any advice?
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Under the same wifi router, ubuntu 22.04 got ipv6 address, but can't access ipv6 website, while windows 10 works correctly, why?
in my office, I have a TP-LINK wifi router(TPlink TL-WDR7660). The wifi router's WLAN setting is that the ipv4 address of the WLAN port is automatically assigned by the upstream router, while the LAN ...
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Enable self signed certificates in OpenConnect GUI
I am trying to connect to a VPN server hosting a self-signed TLS certificate using OpenConnect VPN client. The authentication in VPN is behind Microsoft SSO.
When I try to connect to the VPN (Settings-...
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Ubuntu SSH Server Not respecting the Network Proxy
I've a ubuntu with a SSH server configured, my ubuntu has a vpn and Network Proxy settings set to manual, but when I connect with SSH this settings seem to not apply to it.
For example if I do "...
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How to enable wifi driver
I installed Ubuntu on my laptop for the first time, and when I tried to connect to a WiFi network none would appear. I've been trying to fix it for some time now, reading forums and with YouTube, but ...
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Wifi connects but no internet access on Ubuntu, works fine with Windows dual boot
I have my desktop dual boot with Windows and Ubuntu 22.04. I have faced this issue before, but earlier it just went away. The issue is, my spectrum wifi connects to all devices including Windows on ...
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Can I configure my netplan configuration so that all UDP outgoing broadcast traffic goes thru a specific Ethernet interface?
I've got Ubuntu Desktop 22.04 on a computer with 2 Ethernet interfaces. I've been reading netplan documentation for the past 2 hours and I'm running out of ideas (or understanding).
eth1 connects to ...
- 129
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trouble with DNS ports config
I'm just starting out setting up my own server (VPS) so still on the steep learning curve.
I'm running it on Ubuntu 22.04 with Cloudpanel installed to manage the sites. Cloudpanel loads successfully ...
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2
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365
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Network problems with snap apps
After upgrading Kubuntu from 23.10 to 24.04 beta, snap apps can't properly connect to internet. Network and DNS works well with programs installed with apt like google-chrome-beta and google-chrome-...
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Connected to WiFi but no access to internet
I was able to connect to the Internet until Sunday. I couldn't connect to the Internet on Monday. Nothing has changed on my PC. The only thing I did was sudo apt-get update but it didn't download too ...
- 121
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26
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Network Manager keeps asking for "Legitimation for WIFI"
I have an elderly person whose desktop is connected to the LAN via WIFI card.
The WIFI is always the same, "Allow all users to connect" is already checked, the main user gets automatically ...
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nginx traffic redirect based on subdomain
I am currently attempting to setup my VPS to host multiple different docker containers.
My domain name is hosted on Cloudflare (which has a limited amount of available ports).
After doing research, to ...
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1
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611
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Can't ping 8.8.8.8
I have an Ubuntu server which is running fine, but recently it can't ping 8.8.8.8. It just returns Network not reachable. What's happening here? I am behind an Xfinity gateway.
Here is a screenshot:
...
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Correct RealTek network driver isn't connecting to internet
I've been having issues with my wifi connectivity. Occasionally my computer just stopped recognizing wifi's altogether - I look for networks in the dropdown and nothing's there.
I figured it was a ...
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49
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Wi-Fi connectivity issues on Ubuntu Server
I'm trying to setup to run my old laptop as a home server using Ubuntu Server 22.04.4.
The problem is after configuration, my laptop can not detect any wifi using
nmcli device wifi list
I have tried ...
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1
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160
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WiFi-driver not Found in CSL Mini PC (Ubuntu 22.04.4)
I bought a mini pc with wifi and bluetooth but no matter what I try the wifi doesn't show up. It works on windows 10 after installing the drivers, but not in ubuntu sadly.
windows drivers:
https://ftp....
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1
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57
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Fail to checkout svn repos (server is on Ubuntu) on windows machine
I have created a svn repository on my workstation (system: Ubuntu 22.04), and I have configured apache and ssl settings following Subversion - Community Help Wiki and SVN Server on Ubuntu with https ...
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68
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Ethernet problems on Ubuntu 22.04 LTS
Before anything, I'm using a somewhat old Asus laptop model (Q550LF). With that said here is the more detailed specs of the problem:
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Two instances of Netatalk after upgrade Ubuntu Server 18.04 to 20.04
I have Two instance after upgrade
/usr/sbin/netatalk
and /usr/local/sbin/netatalk
For now second one is working after restoring from backup library /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6.0.2
but ...
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1
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CcHttpServer: Failed to create gst elements (GNOME NETWORK DISPLAY)
I am tried to install following the instructions here https://flatpak.org/setup/Ubuntu
linux@dell ~> flatpak run org.gnome.NetworkDisplays
(gnome-network-displays:2): Gnd-ERROR **: 19:03:03.137: ...
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List connected devices for Ubuntu hotspot 22.04
Is there any way to get a list of devices connected to your own established AP in Ubuntu 22.04? I have used the built in desktop Wi-Fi hot-spot enabler and and arp -a only returns an IP-address ...
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Issue with Network adapter “Qualcomm Atheros ar9485
I am trying dualboot Ubuntu 22.04.4 LTS with Windows 8.1 (Yes I know it’s old) but having issues with my Network adapter.
Upon running iwconfig I get the output
lo no wireless extensions.
eno1. ...
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1
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82
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Prioritize routes in NetworkManager when using custom IP with DHCP fallback
I'm using network manager to set a custom IP address, but also keeping DHCP activated in case I connect my headless device to another network, I automatically sets the default gateway and everything. ...
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Troubleshooting Various System Errors: MTRR Inconsistency, ACPI BIOS Errors, PCI Errors, and More
I'm encountering multiple errors and warnings in my system logs and need assistance troubleshooting them. Here's a summary of the issues:
1. MTRR Inconsistency 2. ACPI BIOS Errors 3. PCI Errors 4. PS/...
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"Connection deactivated" error popping up every minute or so in Kubuntu
I just installed Kubuntu 23.10 on a new desktop PC I built, which uses an AX210NGW DTK M.2 wifi/bluetooth card:
e4:00.0 Network controller: Intel Corporation Wi-Fi 6 AX210/AX211/AX411 160MHz (rev 1a)
...
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Ubuntu 22.04 - How to change listen port for the native remote desktop?
First of all, I do not use xrdp so, it's not gonna be in /etc/xrdp/xrdp.ini. I can RDP from Windows to Ubuntu (hosted on VirtualBox - Bridged Connection) just fine via 3389 but I prefer using a ...
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42
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Getting Internet from Layer 2 Bridge
I have 64-bit Ubuntu 23.10 Server running on a Raspberry Pi 4B. The Pi has a separate USB WiFi dongle (wlx00c0cab46ac3) that allows for 4addr mode, and I'd like to use this dongle to create a Layer 2 ...
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I forced shutdown while rebooting and now my Bluetooth and WiFi won't work
I'm a new ubuntu user. I'm using ubuntu 22.04 LTS for almost 2 months and everything was fine... the Bluetooth and the WiFi both was working perfectly...
But yesterday I wanted to shutdown my laptop, ...
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I can't access internet anymore after uninstalling pihole from my ubuntu server
I can still ssh to the server within local network.
I can't ping google.com or 8.8.8.8.
Here is the wireless-info script result:
https://paste.ubuntu.com/p/63t9bN7Dc9/
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Mount NFS doesnt work anymore after changing ip adres due VLAN
I have put my Synology NAS in a different VLAN then my computer. I changed the IP address in the etc/fstab file for the mounts. My Ubuntu pc is on 192.168.10.50 and my NAS is on 192.168.40.50. I can ...
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Connecting to two different networks simultaneously using two network adapters to access Internet
Description
I have two wifi adapters, each one is connected two a different network, while each network is connected to the Internet.
The two networks have the same network mask and my computer has ...
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How can I solve the DNS leak when using systemd with DNSOverTLS
The problem:
I am connected to a foreign wifi on Kubuntu Desktop 22.04 and want to configure the DNS system-wide to 9.9.9.9 (quad9) with DNSOverTLS. However, on dnsleaktest.com I still get a different ...
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Where is the documentation that describes and explains the output of the ip link command?
Here is some fake/sample output of the ip link command.
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
3: eno1: <NO-CARRIER,...
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No wifi/bluetooth connection on Ubuntu 22.04 LTS
I installed Ubuntu 22.04 on a new PC.
Configuration - AMD Ryzen 5 7600, Motherboard - Asus B650-plus wifi tuf gaming.
However, I am not able to connect to Wifi and Bluetooth.
Most of the wifi networks,...
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56
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Network setup for a mobile robot base
I am working on a mobile robot base that is supposed to be controlled from a stationary control station. The robot itself has multiple computers onboard, which are on an internal Ethernet network. The ...
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Ubuntu 22.04: "Limited Connectivity"
I have a dual boot setup with Windows 10 and Ubuntu 22.04.
A few days ago I started getting a "Limited Connectivity" error on Ubuntu and no access to the Internet. I did not change any ...
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Realtek RTL8723BE Wireless card not working in Ubuntu 22.04.4 LTS
I have an HP laptop (Hp 15) with Realtek RTL8723BE WIFI card after upgrading the kernel to 6.2.11-060211-generic. The WIFI connection keeps getting Dropped after some time like 15-20 minutes with ...
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Graphic Issues Firewall gfuw in Ubuntu 22.04.4 on RPI4 8GB
I'm running ubuntu mate 22.04.4 LTS on my 8GB Raspberry Pi 4. After not using the device for some weeks I ran all updates and upgrades. I noticed that the VNC remote access was no longer working so I ...
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336
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chrony conflicts with time-daemon
I was trying to install freeipa-client on ubuntu 20.04 that will be used on a client with no apt access. I mannualy installed all the required .deb using dpkg.
after I successfully installed the ...
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I'm having trouble connecting to server with Remote Desktop Connection
A screenshot explains it better. I can't connect because of this. My Remote Desktop Connection fails because the remote computer can't be authenticated due to problems with its security certificate. ...
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ubuntu system menu not showing some options
I want to connect to va wireless network, so I used my other computer to search up how to do so (searching on ubuntu displayed an error). Ubuntu said to click the system menu to see wifi, so I did, ...
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