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.
23,040
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mt7921e does not seem to support GCMP encryption (Ubuntu 23.10)
OS: Ubuntu 23.10
Kernel: 6.5.0-26-generic
I have Lenovo laptop with this WiFi card installed lshw -C network:
product: MT7922 802.11ax PCI Express Wireless Network Adapter
vendor: ...
- 61
0
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0
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45
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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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0
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37
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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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34
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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 ...
- 101
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64
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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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35
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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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1
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65
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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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54
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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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22
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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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1
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118
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Ubuntu server 22.04 after setting up static ip-address i cant ping deafult gateway
im quite new to linux and I have tried to set a static ip-address on my ubuntu server 22.04. This is what the /etc/netplan/00-config looks like.
network:
version: 2
renderer: networkd
ethernets:
...
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0
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30
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phpfpm and apache configuration not working
i'm recently working on 3-tier architecture on ubuntu virtual machines , 1 desktop and 2 servers,
Their network configuration is set to bridged Adapter in order to communicate with the wifi card ...
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0
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22
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mDNS only on IPv6
Ubuntu Version: Ubuntu 22.04.4 LTS
I'm having a weird issue with mDNS running on this host.
Using a discover tool on Macos I see the mDNS announcement from this host only on IPv6 and nothing on IPv4.
...
- 101
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41
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How can I make Ubuntu route all traffic through my Wireguard VPN?
I have set up a working Wireguard VPN server remotely. I have confirmed that this VPN server works, as my phone can connect flawlessly with it.
In Ubuntu 23.10, I have imported my *.conf file as ...
- 7,655
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46
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Command tcpdump and traceroute [closed]
I have a problem about linux terminal using WSL from Windows, I need to use networks commands like tcpdump, traceroute, etc, but for any of their I have a positive answer, for example, in tcpdump ...
1
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0
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25
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Unable connect via port knocking
I am trying to set up port knocking on my server to enhance security. I've configured my firewall rules to use port knocking, where I have to connect to specific ports in a specific sequence before ...
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29
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Ubuntu server 22.04 port forwarding issue
I am trying to use an old Shuttle xPC as a home server. I've installed Ubuntu Server 22.04, Cockpit (with Navigator and File share), AdGuard Home, qBittoreent, Jellyfin and Nextcloud. On my home ...
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41
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How to stop ubuntu desktop to connect to any ubuntu server?
I have reduced all the listening services on my ubuntu desktop in order to not see the word LISTEN in netstat. While checking netstat today i saw a tcp_wait connection to port ubuntu-content-cache-3....
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62
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Authentication Required system policy prevents modifications of network settings for all users
When I open Ubuntu a box open with the title "Authentication Required system policy prevents modifications of network settings for all users".
On this window i am not able to click and enter ...
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0
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22
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Bluetooth earbuds not connecting, wifi disconnecting, choppy audio
Two days ago, I bought a pair of Jabra Elite 8 Active bluetooth earbuds. I've had to spend these past 2 days troubleshooting to get my headset to properly work with my laptop running ubuntu 22.04.4 ...
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1
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25
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can't connect to apache with localhost or 127.0.0.1 on browser
I've installed the apache2 package and have it running. When I try to test it by going to http://localhost and http://127.0.0.1, I'm greeted with "ERR_CONNECTION_REFUSED". Running sudo ...
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1
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61
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Update removed NetworkManager - how to recover? [closed]
I ran an update on my system and something went horribly wrong. Midway through, it lost connectivity but I let it continue thinking it was just updating something to do with networking. The update ...
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58
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Ethernet not recognized on Ubuntu 22.04
I am running Ubuntu 22.04 (Windows 11 dual boot) using kernel verion 6.5.0-21-generic. I am running this version of the kernel because it appears that the intel wireless driver is incompatible with 6....
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41
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5 GHZ connections not appearing in Wifi list
I have Ubuntu 22.04 with KDE plasma. I want to connect to a 5 Ghz Wifi network, but it won't show up in the list of available networks. My Windows laptop can connect from the same spot just fine.
...
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113
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'A start job is running for wait for network to be configured'
Just upgraded a headless server to 22.04.4 LTS.
Every time I start up now, I get this annoying 2 minute delay.
EDIT: to be more specific, I tried sudo systemctl disable systemd-networkd.service. No ...
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0
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63
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Yet another issue with the RTL8821ce wifi card from Realtek
I have encountered numerous issues with the rtl8821ce WiFi card on almost all Linux distros I have tried (including ChromeOS Flex), except for Arch Linux and EndeavourOS. Here is a snippet from sudo ...
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1
answer
66
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Error showing no such file or directory when running snort.conf
Its about snort , where i cant run the snort.conf and showing there is no such file or directory. How to solve that issue?
The image is a snippet of vmware virtual machine where I have found a problem ...
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1
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35
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Multipathing support
I have 2 nics in ubuntu server, say for e,g NIC1 and NIC2. These are intended to serve netapp storage traffic simultaneously using iscsi . Multipathing is enabled. When we issue the multipath -ll, i ...
0
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0
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10
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loosing internet connectivity after some time in ubuntu 22.04 running with low latency kernel
I have 5 interfaces on this system
enp1s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
inet 192.168.20.2 netmask 255.255.255.0 broadcast 192.168.20.255
inet6 fe80::b37:905f:...
0
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1
answer
64
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Sudden problem with WiFi internet access with one specific Ubuntu 22.04 device with one specific router
I have an Ubuntu 22.04.4 LTS (with Intel Wi-Fi 6 AX201) that suddenly it just can't access the internet with my home WiFi. It was completely unexpected because it was working fine up until now, and ...
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0
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28
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Unable to send email out on port 25 which was previously working
Hello I am having issue sending mail from my own hosted mail server. I has worked fine for a long time.
A few days ago I added DKIM using an online guide, everything seemed fine at first.
About 18 ...
- 99
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48
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Latency issues on KVM VM and kernel 6+
I'm running virtualization on Ubuntu 22.04lts host and when upgrading the kernel to 6.* we start to have issues with latency on the VM machine(qemu+libvirt). The moment I roll back to kernel 5.15 on ...
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0
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20
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LAN network with just two computer: All ports time out, except port 50002, which refuses connection. Why?
Preface and Context:
I am currently troubleshooting the ROS2/LAN based connection of my UR5 CB3 robotic arm with the Ubunut 22 control comupter and the respective driver. This robotic arm seems to ...
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35
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Ubuntu Server LTS 22.04.4 has internet connection, but is not visible on router's device list
I have a fresh install of Ubuntu Server 22.04.4 LTS on an old mini-pc I got from work. I want to run a network share, a vpn and some other services on it and in order to get them working reliably I ...
0
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1
answer
29
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ip-config-unavailable DHCP error from NetworkManager
Overview and Environment
I recently set up a new VirtualBox VM and ran into some strange network behavior. The machine is running Ubuntu 22.04 and after installing the virtualbox guest additions, my I ...
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I am unable to access the internet [closed]
So... I recently installed Ubuntu on one of my old PCs out of curiosity, and it was working well.
My PC doesn't have an in-built wi-fi adapter so I use a USB one, and since wi-fi was slow anyways, I ...
1
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0
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22
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What is "ovs-testc"? How Do I Disable It?
I'd like to run an SDN application on my Ubuntu machine (ver 22.04.3 LTS). As I understand it, when the SDN runs, it needs to BIND to TCP 6653, the default port for OVS. But on my machine, the SDN ...
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29
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Cannot receive UDP datagrams if I use an address OTHER than 0.0.0.0:<port> on second Ethernet interface on my computer board
I'm running Ubuntu 22.04 on a board with two wired Ethernet interfaces (call them LAN1 (192.168.1.101) and LAN2 (192.168.2.1)). Newbie to developing for Linux, and I'm using .NET 6 runtime for my ...
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0
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38
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Devilbox - error, "No Host DNS record found. " even after adding folder name in /etc/hosts/
I am using Devilbox and have been learning through documentation on how to work with it, I have created a folder inside /data/www/ inside devilbox folder and before that I have excluded the mention of ...
0
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0
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237
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Ubuntu Server on Raspberry Pi 5 is not connecting to the internet
Ubuntu Server on Raspberry Pi 5 is not connecting to the internet.
Images of the errors:
I tried reinstalling it at least 5 times: Ubuntu server on Pi won’t connect to Internet
more insight hope ...
0
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1
answer
99
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Wi-Fi driver problem
I installed Ubuntu yesterday (March 22, 2024) on an HP G62 laptop. Now I can't access the internet because I can't access Wi-Fi. The laptop's internal Wi-Fi is broken and I am using a local market Wi-...
0
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0
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38
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Wifi stopped getting connected in Ubuntu 20.04
My Ubuntu 20.04 was working all fine, but all of a sudden I am not able to connect to my wifi as it is keeps on asking me for the wifi password again and again.
I tried to remove the wifi password in ...
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0
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25
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Assistance Needed: Recovering Root Password and Accessing Firewall Settings on Ubuntu 20.04 Server
I am encountering issues with my Ubuntu 20.04 server running on Oracle, as I have forgotten the root password. Unfortunately, I am unable to access the GRUB menu to initiate password recovery. Could ...
0
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0
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47
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Ubuntu Has No Internet :/
Ubuntu Server 23.10
My server was working perfectly fine, until one day I woke up to it having no internet.
The server has a static IP address, and I can use it locally, however when I try to run ping ...
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0
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28
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Network Printers
Ubuntu 23.10 Using Cinnamon desktop.
Local Wifi network printers keep appearing and reactivating themselves in 'Printers-Local Host'. They show up as a 'Printer installed' dialog box on my screen.
In ...
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driver=r8169 driverversion=6.5.0-21-generic not accepting I/G bit in MAC address assignment
I am trying to set a MAC address to my RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller, but the ID does not accept xy:xx:xx:xx when y is even. It seems the I/G bit (multicast) cannot be set.
...
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53
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When does ubuntu initiate a DHCP lease renewal?
After doing some research. I found out that some DHCP clients initiate a lease renew when 50% of the lease time has elapsed. And I need to know if this is valid for ubuntu 20 and later DHCP clients. I ...
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system-resolved and bind9 Ubuntu 22.04.4
I'm running a bind9. All requests are resolved correctly. After some times, i'm facing the following:
From clients all requests are correctly answered. "dig", "nslookup" etc works ...
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0
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24
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How to ping/connect to a KVM on another machine in the same lan?
I have 2 machines in my cluster, say M1 and M2. I have one machine installed with a VM (brought up by virt-install), say VM on M2.
My M2 can ping the IP address of VM. My M1 and M2 can also ping each ...
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120
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Where does the configuraiton in /run/systemd/network come from in a fresh install of 22.04 server?
I have run the following sudo find / -type f -name "*.network" -not -path "/var/lib/docker/*" to show all the .network files on a fresh 22.04 server install.
Aside from the ....
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59
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I am unable to see any wifi networks
Turning wifi on and connecting to hub not possible.
NAME="Ubuntu"
VERSION="20.04.1 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.1 LTS"
Running ...
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