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Questions tagged [networking]

Managing and using network connectivity on a Ubuntu system

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tg3_stop_block timed out on Ubuntu 18.04

I've had my network connection drop pretty much daily. I finally managed to get the logs and it says: Dec 11 19:34:06 hpelite kernel: [88525.525293] tg3 0000:03:00.0: tg3_stop_block timed out, ofs=...
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Ubuntu says I have connection but wont connect to internet

Okay I'm greatly frustrated with this situation as I can not connect to the internet and I cannot reinstall windows and this is the only computer I have right now. I have used Ubuntu for a few ...
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1answer
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Client can't connect to a DNS server (NXDOMAIN)

I'm an IT student working in VirtualBox. I managed to set up a DNS server that seems to work: Server: 127.0.0.1 Address: 127.0.0.1#53 Name: srv-01.lab.loc Address: 192.168.1.1 Now I need to check ...
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How do I remove another computer which has remote acces to my laptop?

I visited a friend recently and he uploaded Linux on my laptop. He uploaded many programs from his laptop unto mine using terminal. To do this he had to add a very long code from his laptop onto my ...
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Ubuntu dont detect internet after upgrade

When i put ifconfig it only detect local loop (lo) this happened after upgrade ubuntu 12.04 to 14.04 in a old computer and i cant connect to internet. I have put the command sudo lshw -C network and ...
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nethogs shows 0 KB although I have traffic

I am running a network related program that performs TLS handshakes with many hosts. I ant to monitor the network traffic so I used nethogs. It shows 0 KB. NetHogs version 0.8.5-2 PID USER ...
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Is anyone tried ntp with restrict default nopeer command

NTP version installed: ntp-4.2.6p5-5 I'm trying to understand the usage of below ntp restrict command : ----> restrict default nopeer Below is the reference info shared in ntp documentation: http://...
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Ubuntu 18.04 slow wired connection speed

Have tried several fixes from the internet on this, no luck so far. Just installed 18.04 on an old laptop, dual boot with Win 10. I've played with Linux a bit before (on a Raspberry Pi) but am not ...
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I built a PC with a hard drive from an old system, and now my TP Link Archer T4U USB isn't working properly

I have tried every single thing to get it to work. Reinstalled Drivers Used both Ubuntu 18.04 LTS and 16.04 (I have both on the same drive) Tried using a completely different USB Stick But nothing ...
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1answer
26 views

apt update Proxy Error

How to resolve Err:1 http://archive.ubuntu.com/ubuntu bionic InRelease 502 Proxy Error ( Forefront TMG denied the specified Uniform Resource Locator (URL). ) [IP: 10.10.8.118 8080] Err:2 http://...
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2answers
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Firefox can access internet but terminal can't

I'm connected to university router, and I know they have many restrictions, but firefox is accessing the repo links without any issue, but the terminal can't. How can I make the terminal use the same ...
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1answer
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Ubuntu DHCP server doesn't assign a fixed address

I am an IT student, and I'm working with Ubuntu on VirtualBox. One of my virtual machines has a DHCP server installed, and it's set to give a specific IP-address (192.168.1.55) to a host Uclient. ...
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14 views

How to share wireless internet with wired

I'm running Ubuntu server 18.10. I have a wireless connection I want to share with my wired connection. What I am trying to accomplish is sharing the internet with a mini router. I can do it ...
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20 views

Desktop computer with network card connect to internet [on hold]

Will Ubuntu connect a desktop computer with a network card to the Internet?
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Routing local LAN through ipsec to remote LAN

I have a local LAN network 192.168.1.0/24 and on the remote side a LAN network of 172.30.0.0/16, with OpenSWAN on both sides that can ping each other's LAN address, and the local gateway machine can ...
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network metric: change default for vpn and wifi

I'm trying to configure the metrics on my PCs but most of the questions/threads are about setting different metrics on NIC and I haven't found answers when this involve wifi and VPN. I use VPN only ...
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how to set up nat and host only to access server from other computer virtual box

i want to create my own server on virtual box. i already add NAT and HOST-ONLY in virtual box. and this is ip from virtual box host-only Adapter ipv4 address = 192.168.56.1 netmask = 255.255.255.0 ...
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24 views

What is “options iwlwifi 11n_disable=1” in WiFi setting?

One of the common solutions for improving WiFi signal is to use this command options iwlwifi 11n_disable=1 in /etc/modprobe.d/iwlwifi.conf And the number can be 0, 1, 2, 8. I was unable to find ...
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52 views

Ubuntu (alternate) server 18.04: no network interfaces

I installed Ubuntu 18.04 using the alternate server installer. During the installation no network interfaces were detected. I could not figure out how to setup networking (neither ethernet nor wifi). ...
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netplan + WiFi: link is not ready (18.04 Server)

I'm trying 18.04 Server with this fancy new netplan and can't get my WiFi to work. Doing it the old-fashioned way (e.g. configuring wpa_supplicant.service and using dhclient), everything is fine. But ...
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20 views

Samba Share - Path not found on Windows Client

I'm not entirely sure if this is a problem with my samba configuration or my windows machine: I just setup a samba share with following configuration: smbd.conf: [share] Comment = Raid0 array share ...
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map ubuntu shared folder in windows 7

I have a virtual machine running ubuntu and I am trying to host some files on ubuntu and map the drive in windows PC. Following the steps here, here and here, I am able to see (from windows) the "...
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Ubunti 18.04 - Mount NAS on Boot

I have a WDCloud( EX2 ) NAS for several years, which works fine with MAC os and Windows 7- via Wifi and LAN. Now- I have an i5 with 8GB, 1000MB LAN connected to network, installed with fresh copy of ...
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SFTP/FTPS speed throttling

Download speed from my dedicated server tops out at ~4.5 MB/s or ~9 MB/s after a routine sudo apt dist-upgrade a while ago. Before it used to be fine. I tried these combinations: Filezilla SFTP, ...
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Openstack on Xenial Networking

What would it mean when Openstack created VMs can ping other machines on the external network--both VMs and physical machines-- but NOT the physical router(default gateway)? Nor can the physical ...
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Internet through wifi just can access google site

I just have installed Ubuntu 18.04 and upgraded to Ubuntu 18.10. I install php, mysql, phpmyadmin and remove all these completely. After all, I get a problem where my wifi connection just can access ...
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Ethernet - Windows works, but not on Ubuntu 18.04

On my Ubuntu 18.04 laptop the ethernet doesn't work at my home network (also wifi, hotspot, and usb tethering also don't work). But my Windows laptop works at my home network. Also the Ethernet works ...
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30 views

Does Ubuntu now use bpfilter or netfilter?

I'm trying to put together a firewall/router using netinstall of Ubuntu 18.10 with bpfilter. I know it's packaged by default with kernel >=4.18 these days, but I'm a little confused about how to ...
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0answers
21 views

Enable WebRTC in Firefox for whitelisted sites only

I would like to have WebRTC generally blocked in my Firefox browser, except for a small set of websites which I trust and which need this functionality. I know one can disable WebRTC in Firefox by ...
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26 views

Correct way to apply WiFi mac address randomization

I wanted to randomize my mac address on every boot just like in Windows 10. During my quest for that I tried the following - According to this post, starting from NetworkManager 1.4.1+ we can do mac ...
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1answer
70 views

Ubuntu 18.04 WiFi Networks are not displaying even though there are 3 nearby

I recently installed Ubuntu 18.04 on my 2009 mac mini. I used a bootable flash drive and all is well. Initially, WiFi adapter where not found, but after going into the Software & Updates > ...
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ASUS PCE cant detect 5ghz network

I have a wifi card with support for 5Ghz. The card is the ASUS PCE AC56. I have installed the drivers for my WiFi card from the "Additions drivers" tab in "Software & Updates", using the "...
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Ubuntu 18.04 configure netplan with 2 network cards

I'm going to install ubuntu 18.04 on a small "server", not a real server, just a deliverer of multimedia files on demand, for a local network. I'm recollecting info because I still have not installed ...
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1answer
22 views

Netplan bond/bridge MTU setting not being honored on Bionic system

I'm running Netplan on an 18.04 system. I've been able to workout and convert most of my network configuration from my 16.04 systems to Netplan for 18.04, however I've run into an issue now when ...
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No internet access in Ubuntu, No ethernet Port, No wifi capability! Help!

Okay so here is the rundown. I have a lenovo 330s laptop. I have put Ubuntu 18.04 onto a USB device, and I am running it in compatibility mode (if I don't I have to click e to edit and type in noapic ...
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1answer
95 views

Wi-Fi stopped working on Ubuntu 18.10 with Linux 4.18.0-12

After Linux upgraded from 4.18.0-11-generic to 4.18.0-12-generic on my Ubuntu 18.10 network connection stopped working and on Wi-Fi settings the message: "No Wi-Fi adapter found" is shown. I can still ...
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35 views

nmcli connection verification failed

I'll paste the sequence of commands I'm trying to run to configure desktop Ubuntu 18.04 NetworkManager according to the answer in this SO question. When I perform the steps in the answer I end up with ...
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Why do these errors appear while running fake run-fake-gps.sh?

I am working on a dronekit follow_me project. So in one terminal, I am running python follow_me.py and in another terminal running run-fake-gps.sh. Then an error appears as below: Sending fake GPS ...
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Ath10k-QCA6174 firmware issue

We are using the sparklan module WNFQ-255ACN(BT) with Ubuntu userland, and using QCA6174 firmware for that, but while booting we are facing. error logs : [ 18.363443] ath10k_pci 0002:01:00.0: ...
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16 views
+100

Cannot connect to g/n wifi networks - is my driver the issue?

I am using a Dell XPS 13. My laptop cannot connect to a wifi network after it disabled its support for b-range wifi and started exclusively using g/n range wifi. This makes me suspect that my laptop ...
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network breaks, kern.log reports call trace 18.04LTS-64Bit

My nc4400 laptop is having its network connection breakdown. After many minutes the kernel will create a call trace and break the network. It is connecting via wlp16s0 How can this be fixed? The kern....
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Randomly lose write permissions on Windows 10 when trying to write to Ubuntu 18.04 network share, setup via GUI

So I've shared a few folders via GUI on Ubuntu 18.04. I have a hard drive in Ubuntu machine, ext4, and I'm accessing and writing to it from Windows 10. Everything was working correctly, I transferred ...
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Ubuntu 18.04 keeps disconnecting from wifi (Qualcomm Atheros QCA 95665/ AR9565)

I have a dell Latitude E5450 that had windows installed. I erased the hard drive and put installed Ubuntu 18.04. The wifi stays connected for a few minutes and then goes out. I have to go to settings ...
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1answer
23 views

Low speed for Atheros AR8151

I hope someone can help! i've just cat6 cable through my house and hardwired my HTPC, I decided to do a quick speed test and was only getting ~91 Mb/s both devices have GB ports so i was expecting ...
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Read temperature of broadcom NIC

i got a 10Gbit/s network card and want to know the temperature of the NIC. Even lmsensors can't detect it, only the 1G onboard NIC. Board: SuperMicro X10SRD-F NIC: Broadcom Limited BCM57416 ...
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Ubuntu(16.04.5) new install cannot ping default gateway/other systems in network

This is my first post and please forgive if i am asking something very trivial. I tried several things that I read on the forum but couldn't figure out a solution that works for me. I installed ...
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1answer
393 views

WiFi works on Ubuntu, but not wired connection

I installed Ubuntu (server) onto a computer and during the setup I connected it to my wifi and it works fine. However I am trying to move it to a wired connection and it doesn't seem to recognize the ...
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1answer
185 views

if-up.d launches two instances of a single script

Case: On our Ubuntu Xenial(16.04) station I host a bot written in Python that connects to our IRC server that's set to launch in /etc/network/if-up.d/ Our bot was connecting twice though the script ...
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I can ping my host domain/8.8.8.8 but can't ping google: name resolution failure

I think I configured the bind dns server correctly on my ubuntu 18.04 server on my virtual network. I can ping my other server ' www.boblowlaw.com ' just fine and I can also ping 8.8.8.8 and I get ...
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1answer
37 views

Ubuntu 18.04, complex network configuration with Netplan

I have a system on which I am using Netplan to provide networking and am running into some issues with the configuration. When I boot the box, there is not networking. When I try to run netplan ...