Questions tagged [networking]

Managing and using network connectivity on a Ubuntu system

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Kubuntu 19.10: How to make K remember accounts for windows network shares?

Kubuntu 19.10 + kde PPA. Latest updates. How can I make Kubuntu remember windows network share logins? I can only set one global windows share account is Settings. What if I have several ...
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Error: Wifi adapter not found after update

I was having the same issue a month ago as from my previous question. Error: "No Wi-Fi adapter found". But it was solved after I followed: WiFi Adapter AX201 Not Found: Ubuntu 18.04. Now I ...
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Multipass, virt-manager and bridged network

I'm just starting to use Multipass, and I have found that some of the documentation is sparse (or I don't know how to find it properly). I am running 19.10, with QEMU and libvirt installed. I created ...
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19.10 dhclient + resolvconf not updating resolv.conf

I am not running systemd.resolved, not do I wish to. Am am using netplan, systemd.networkd, resolvconf, dhclient /etc/resolv.conf is a link -> ../run/resolvconf/resolv.conf The resolvconf hook from ...
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2answers
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How to install driver for ReakTek rtl8821ce with NO ETHERNET PORT

I just bought a new HP 15-ef0875ms laptop and am trying to install Xubuntu 18.04.4. The network card is not recognized. Steps I have taken: I downloaded the driver using other answers here. I tried ...
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No Wifi Adapter found on Ubuntu 18.04

i'm using Ubuntu desktop installed on lenovo laptop with realtek wireless card and recently i can't access the internet and instead of the wifi signal i got <*> symbol and in the wifi section i got ...
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namespace deleted, kernel: unregister_netdevice: waiting for lo to become free. Usage count = 1

for each Ubuntu namespace, we assign an IPv4 and a IPv6 with private mac vlan. After removing the namespace, The assigned IPv4 and IPv6 do still responding ping, and we know the adapter name, but we ...
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how to automatically give permission to new folder for my nas

Firstly, I'll show you here my drive status, because I don't want to take just "don't use 777" answer. Filesystem 1K-blocks Used Available Use% Mounted on udev 3961312 0 ...
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1answer
39 views

Openconnect GUI: The service providing the VPN connection was stopped

I've been having an issue when trying to connect to my school's vpn using the Kubuntu 19.10 openconnect gui. When I attempt to connect, I instantly get disconnected from the vpn and receive ...
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How can I route all of a VM's traffic through a VPN connection?

The main thing I've tried was opening VirtualBox and using File -> Preferences -> Proxy -> Manual Proxy Configuration to set my host to 10.8.0.1 and its port to 1080, since this is the info for ...
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2answers
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WiFi adapter not found Ubuntu 19.10

I've come a long way googling and trying to fix this problem on my Zenbook and still not solve it.. It all started when Wi-Fi suddenly disappeared on Windows 10, however the adapter continued to ...
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My computer does not connect to WiFi anymore

So I have an HP laptop and Ubuntu does not have the drivers for my wifi, so I had to use other drivers I do not know exactly which were all I remember is that it is rtl8723de. So all went smooth since ...
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21 views

No shell for ssh connection after proper password entered

I have two hosts with 20.04 Testing in same wifi subnet connected to my AP. I wanted to have secured transfer of files betwen them so I choose sh/scp. When I connect from one to another, I enter right ...
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26 views

Bridge link losing DefaultRoute and DNS scope after hot-plugging slave interface - why?

Using 19.10 (eoan). Here's a bird's-eye view of the setup: netplan is set to put wlan0, eth0, eth1 in a bridge, br0 netplan statically sets br0 with DNS servers (and IP4 address, gateway4, etc.) ...
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Ubuntu 18 no wireless after reboot from Windows 10

I have a Windows 10 and Ubuntu in dual boot on my laptop. The problem is that when I want to switch from Windows 10 from Ubuntu I have to reboot at least one time Ubuntu before it recognizes my ...
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40 views

How to identify UDP based DoS

I'm running Counter-strike game server on 27015 UDP port. I'm using Amazon AWS to host game server. I have added only my friend's IP into security group so rest of the traffic is always blocked. My ...
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How can I manually configure network interfaces? [closed]

I am on elementaryOS (Ubuntu 18.04-based) tried to follow this question and answer here here. The answer suggests that SSH will not be available automatically, if Network Manager is used for managing ...
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Bluetooth not working (no adapters found) - AX200 - iwlwifi works however

My PC: {21:26}~ ➭ uname -a Linux trunk3 5.3.0-40-generic #32-Ubuntu SMP Fri Jan 31 20:24:34 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux {21:27}~ ➭ inxi -Fz System: Host: trunk3 Kernel: 5.3.0-40-...
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Host cannot connect to Internet but Guest VMs can

Running 18.04 Ubuntu and I made a bridged interface to allow my VM to share the connection. However much to my surprise, the VM is able to fetch packages from the internet, but my host cannot anymore. ...
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1answer
40 views

WiFi, Network and Bluetooth not work in Xubuntu for Hp Notebook

Study ALL possible solutions but none works. I download packages and drivers to my mobile phone and transfer them to my laptop. I'm very frustrated. Can anybody help me? Thanks. EDIT 1: Thank you ...
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“Rfkill list all” doesn't show wifi and “dmesg | grep iwlwifi” shows error

Hey guys i have installed ubuntu 19.10 on my new dell inspirion and can not connect to wifi cause ubuntu doesn't see adapter. Also the main problem that i only have WLAN and now cannot connect to ...
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1answer
34 views

Wifi and settings system are missing

I installed ubuntu 18.04 LTS this week. So at first, I had a problem with the wifi connection. It really was not stable; wifi was disconnected every 5 minutes. So I googled about it and tried this ...
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Connect to ubuntu hotspot from ubuntu laptop

I'm having a lot of difficulty connecting from an ubuntu 18.04 laptop to a hotspot setup on my ubuntu 18.04 desktop. Laptop card 02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac ...
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No WiFi option in Ubuntu 19.10 [duplicate]

I know that this type of question has been asked before, but those solutions didn't work for me. I have recently installed Ubuntu 19.10 by removing Windows 10. After the installation, I was surprised ...
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why can not connect ppa in bash but can connect it via Firefox

i have need to install internet speed monitoring for the Gnome by this post instruction and when i tried to run sudo apt-add-repository ppa:fixnix/netspeed i get this: so@so-notebook:~$ sudo apt-add-...
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How do you create a lan-only network for virtual machines to run in?

I'm setting up ubuntu desktop LTS 18.04 to host kvm virtual machines. I want to allow qemu vm's to only access a windows smb file server on the lan and samba on the host and block everything else ...
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19.10: Troubleshoot failed (wired Ethernet) internet connection when DNS works properly?

I'm connecting to a corporate internet for the first time using an Ethernet cable. The connection works for everyone else, but not my Ubuntu 19.1 laptop. After troubleshooting, there doesn't seem to ...
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1answer
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Wireless Adapter Vanished after Update in 19.10, Lenovo Xiaoxin 15

After a recent update from ubuntu 19.10, I reboot my PC. After reboot, I discovered that there is no wifi-Adapter available. To install wifi Adapter manually I tried the command : sudo lshw -C ...
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New wifi card is not recognized. Ubuntu 16.04 [duplicate]

I got a new network card (Intel Wireless-AC 9260) for my Dell XPS 13 running Ubuntu 16.04. The problem is that the new network card is not working. The lshw command shows that it is unclaimed. The old ...
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3answers
117 views

No Wi-Fi Adapter Found - 19.10: Dell Inspiron: Intel

My laptop (Dell Inspiron 5590 with Ubuntu 19.10 and kernel 5.3.0-40) was working fine until yesterday. When I turned it on I could not connect to the internet. I noticed that "Aeroplane mode" was ...
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Can not able to connect buletooth with Skullcandy Earbuds in ubuntu 16.04

Here I am facing issue with connecting bluetooth to Skullcandy Jib+ earbuds with my Ubuntu 16.04. I can easily able connect it with my cellphone and my windows laptop so issue is not regarding with ...
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adding more than domain to BIND9

Ive setup BIND9 on a VPS that points to my WAN IP as i have my own lab which works great on one of the Domains but how ever im having a problem, I added a new zone for the new Domain. Domain that ...
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1answer
34 views

Multiple network cards, I lose internet on reboot

I really hope you'll take time to read my problem, I've hesitated a lot about asking you because of how complicated it is and I was even wondering how I'm going to explain it. This is occurring since ...
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0answers
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No WiFi after MOK setup. Disabling Secure Boot does not fix

I'm running Ubuntu 19.10 (and using Cinnamon) on a Lenovo Thinkpad Carbon X1 Gen 7. I installed Virtualbox, which set up an MOK password after detecting Secure Boot was enabled in my BIOS. After ...
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1answer
89 views

19.10: Thinkpad L13: Intel 9560: wifi interface suddenly disappeared

I've been running Ubuntu 19.10 for about three weeks on my new Thinkpad L13 Yoga. Been working great. Suddenly this evening, the wifi device is missing. Doesn't appear in the menu in the upper right. ...
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12 views

Postfix config ubuntu Google cloud with SSL

Recently I bought a compute engine on Google cloud and installed Ubuntu 16.04 and then Virtualmin. Everything works fine but cannot send or receive emails. Changed port 25 to 2525 since GC blocked ...
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After an update to 18.04.04 internet access is delayed badly

I have recently updated (doing a "partial upgrade") when prompted on my Ubuntu 18.04.4 LTS and now in all browsers when I access anything, even just do a search, there is a delay of many seconds (...
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Enabling an interface on Ubuntu Server 18.04 LTS

I have just installed Ubuntu Server 18.04 LTS. I am trying to setup my network but having trouble as the product is faulty. On starting it up and logging in, it states documentation can be found at '...
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internet connection unavailable [closed]

first, I used dmesg|grep eth r8169 0000:02:00.0 eth0:RTL8168h/0111h at 0x (ptrval), **:**:**:**:**:**, XID ********* r8169 0000:02:00.0 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ...
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How to connect with Ubuntu 18.04 to WPA3?

after researching and not comming to a solution or idea, I am going to ask the community here. Is it possible to upgrade packages in Ubuntu 18.04 LTS to connect with NetworkManager from the GUI to ...
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Is there something wrong with this?

Configuration It keeps saying it can not resolve host. Here's all the data my hosting company gives me: primary IP: 69.30.212.170 Full range: 69.30.212.170 - 69.30.212.174 subnet mask: 255.255.255....
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Touch pad is not working in dual boot with windows 10 after installation. How to make touchpad working without internet?

I just switched from windows and instaled ubuntu alongside windows 10. After installation touchpad is not working. My system is Lenovo ideapad 330 15AST Processor: AMD A6 RAM: 8GB SSD: 240GB I ...
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67 views

Thinkpad Carbon X1 2019 (gen7) wifi on Ubunto 18.04 (solved)

(I have already "solved" this problem, and am posting for other peoples' sake) Hardware: Lenovo Thinkpad Carbon X1 2019, using an Intel AC 9560 wireless module Upon installing ubuntu 18.04, I ...
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1answer
220 views

Connecting to Internet Problems

So I came home from a week long vacation to find that my internet is no longer working. I do the usual (reset router, reset pc, check internet settings, etc.) and I noticed something strange. ...
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Pass network through two interfaces

So I have a situation at home where I want to connect my pc (19.10) to my network, but my only nearby ethernet port is in use by my server (18.04). Now my server has two ethernet ports, and I'm ...
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0answers
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big mistake with bind9 [closed]

I have a big mistake with my server i was trying searching on google but never found a solution. my dns server running a mail server and samba-ad-dc i configure it with bind9-DLZ all client have ...
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22 views

Ubuntu Server 18.04 two NIC on different subnet and IP

I've a server with two NIC and they are both on different IP range and subnet, both can access Internet. the first NIC (enps0f0) have a public IP to be accessible to the public, the second NIC (...
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6 views

UFW - to MSSQL server - port forward

I have a gateway node with UFW running. (public ip and internal ip_ I have set up the DNAT to forward port 1433 to the ip address of my database machine (which is behind this gateway node) I still ...
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1answer
235 views

Intel Wifi Card Stopped Working After Software Update

Before the software update my wifi adapter was working. I suspected a hardware problem but when I inserted usb-startup disk wifi is working in "Try Ubuntu" session, so it is not a hardware problem. ...
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42 views

Unable to connect to specific network in Ubuntu 18.04

I am unable to connect to specific network in Ubuntu after upgrading to 18.04. It shows connected but I am unable to access internet. When I try to access with mobile hotspot, it is working fine. ...

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