New answers tagged networking
-1
votes
Can't ping 8.8.8.8
You have nameserver with address 127.0.0.53. To make pingable 8.8.8.8 you need to change dns accordinally.
The first way to do it:
sudo nano /etc/resolv.conf
Change nameserver 127.0.0.53 to ...
- 5
2
votes
Accepted
Why do I have intermittent Wi-Fi disconnections in Ubuntu 20.04.6?
Judging from this snippet of your iwconfig output:
wlo1 IEEE 802.11 ESSID:"patawad"
Mode:Managed Frequency:2.437 GHz Access Point: C0:C5:22:4C:9E:D0
Bit Rate=54 ...
- 26.2k
1
vote
Accepted
WiFi-driver not Found in CSL Mini PC (Ubuntu 22.04.4)
Remove the Broadcom drivers, then in terminal
sudo touch /lib/firmware/brcm/brcmfmac43340-sdio.txt
gedit admin:///lib/firmware/brcm/brcmfmac43340-sdio.txt
Then paste the following into the file
#...
- 12.6k
0
votes
Fail to checkout svn repos (server is on Ubuntu) on windows machine
Well, this blog How to Setup Apache Subversion with Let's encrypt SSL on Ubuntu 18.04 enlightened me. I didn't allow my firewall for http and https, which might be the reason my laptop has been ...
0
votes
Recommended Security settings for Kubuntu 22.04
The KDE and Ubuntu developers bake most "best practices" in already: Automatic security upgrades. No vulnerable open ports. Proper system permissions. And much more.
Try to use the system ...
- 62.4k
1
vote
ubuntu desktop 22.04 LTS kernel version: linux-6.5.0-27-generic causes my network UNCLAIMED
I saw the same thing yesterday with a Realtek RTL8125 2.5GbE Controller. This post gave me the answer for my system. The Ubuntu kernel update didn't install the matching extra modules. Installing ...
- 11
0
votes
Issue with Network adapter “Qualcomm Atheros ar9485
The "Hard blocked: Yes" from rfkill shows that your Wireless interface is disabled by a hardware switch, usually controlled by a key or key combination on your laptop's keyboard.
- 36.5k
0
votes
nmcli - all connections show "unmanaged"
James Lee clued me in.
You have something like this in Ubuntu 22.04:
# nmcli d
DEVICE TYPE STATE CONNECTION
docker0 bridge unmanaged --
mpqemubr0 bridge unmanaged -- ...
- 1
0
votes
Ethernet adapter was disable on Ubuntu 17.04
A bit more general answer is sudo lshw -class network, then look for the content after the field logical name, because in my case it was enp5s0, so with this then you proceed to sudo ifconfig enp5s0 ...
1
vote
How to replace network adapter?
I'm just going to add this here, but I have this very same problem when I'm working with VMs and things where ephemeral devices names may change and so may MAC addresses. The way to set my own name ...
- 74.9k
0
votes
How to replace network adapter?
First of all require dhclient by:
sudo dhclient eth0
after that, you will have internet and you can use...
sudo apt update
sudo apt install network-manager
- 275
0
votes
Edit host machine's network from inside Docker container
As vidarlo already mentioned, it's possible, but maybe not the best idea. I had a similar issue, wehere I needed to change some network configuration settings but I had to use a docker container. I ...
- 1
0
votes
How can I capture network traffic of a single process?
tcplife from the bpfcc-tools package can do this:
$ sudo apt -y install bpfcc-tools
[...]
$ sudo tcplife-bpfcc -T -D 443 &
[1] 102959
$ TIME PID COMM LADDR LPORT RADDR ...
- 442
6
votes
Accepted
How can I solve the DNS leak when using systemd with DNSOverTLS
This does not appear to be a DNS leak.
The IP address, 66.185.120.243 belongs to the WoodyNet, Inc. organization.
Here is the output of a Whois query for 66.185.120.243, which is listed in the output ...
- 1,494
0
votes
Mount NFS doesnt work anymore after changing ip adres due VLAN
Today i first changed the ip address back to old one in the fstab file. Then i umount the nfs shares. I changed the fstab file with the new IP Address of the NAS. That still didnt work. Acces denied ...
1
vote
Where is the documentation that describes and explains the output of the ip link command?
The documentation is already on your computer. Read man ip-link. Or, you could see which package provides it with dpkg -S $(type -p ip), use apt source to download the source, and read, read, read.
- 36.5k
0
votes
Ubuntu 20.04.3 "Authentication required" loop on 2.4GHz network
I have already tried all the options I found on the Internet, all based on command line, none of them worked.
Then I simply tried with GUI - clicked the settings in the right corner, then settings ...
- 31
0
votes
mmcli -m 0 saying modem not found, but I can connect
after enabling dependent GPIO, it helped to restart ModemManager with:
sudo systemctl restart ModemManager
only then
mmcli -m any
worked
- 147
0
votes
chrony conflicts with time-daemon
You can try removing systemd-timesyncd if you know what you are doing because based on the provided logs, it just state that chrony isn't installed properly due to a package conflict.
Hope this helps!
- 1
0
votes
Ubuntu server 22.04 after setting up static ip-address i cant ping deafult gateway
Can you check the ping to any other host IP in the network from your new Ubuntu server?
By default ping is allowed on Ubuntu, check the rule file at /etc/ufw/before.rules. Make sure the ping outbound ...
0
votes
nfs client reconnect after interface change
For auto-reconnect use noresvport
at the client side use noresvport
sudo mount -t nfs [2b01:7f8:1a:f243::a]:/data/ /data/ -o noresvport
At the server use insecure
/data/ 2831:650:5b00:9232::9(rw,sync,...
0
votes
WiFi Issue: Terminal Freeze upon Turning Off WiFi
I faced the same problem on Ubuntu 22.04 with 5.15.0-101-generic kernel. I tried to downgrade the kernel to 5.15.0-100-generic and 5.15.0-97-generic, but the issue remained.
Switching to the latest ...
- 508
0
votes
Ubuntu not booting due to iwlwifi error-WRT: Invalid buffer destination
Just solved a similar problem. Some how in the power settings my Automatic Suspend settings was changed to plugged- in and should be When on Battery. Apparently the program I am running is not able to ...
- 1
0
votes
AWS EC2 Ubuntu crashing
I suspect this was a bug in Linux's driver for Xen. It got fixed a few months ago, but that bugfix hasn't made its way to Ubuntu yet. There's a bug report on Launchpad tracking this.
I'm running ...
- 41
0
votes
can't connect to apache with localhost or 127.0.0.1 on browser
I'm so dumb it's not even funny.
Apparently, to access localhost from a Linux Container in ChromeOS, you need to access penguin.linux.test.
- 1
0
votes
network UNCLAIMED with new net card (22.04.1)
TLDR: You need a 6.x kernel, and HWE kernels on 22.04 include it.
I had the same issue on a system running a X553 chipset. Interestingly the gigabit ports on the chip were fine, but the 10 gig ports ...
- 3,013
0
votes
Cannot reach some WEB pages
The problem was fixed by changing my DNS Nameserver! By default Ubuntu set this to the IP address of my router. On desktop Ubuntu you can change this in Settings>Network, Click on the little gear ...
- 189
0
votes
Update removed NetworkManager - how to recover?
Turns out this was a problem specific to noble and there's now lots of posts about it showing on Google, including this https://lists.ubuntu.com/archives/ubuntu-devel/2024-March/042954.html
My ...
- 35
0
votes
WIFI keeps disconnecting on 22.04.3 LTS after "apt upgrade" from 6.2.0-39-generic to 6.5.0-14-generic
I am unsure of the exact kernel version I was using, but with the same MT7921 card on some WLANs only I was rarely able to connect, until it was suggested I upgrade from 22.04.3 LTS to 23.10 which ...
- 83
0
votes
Multipathing support
I assumed that you have 2-ports NIC1 and 2-ports NIC2, if system shows NIC1 port1 and port2 formed multi-path that means your NIC1 port1 and port2 connect to the same LUN which is not an optimal ...
- 19
1
vote
Error showing no such file or directory when running snort.conf
Since snort is a very configurable tool, there's no reasonable default configuration, so you have to create snort.conf yourself. Start by reading man snort, look at https://www.snort.org/snort3
- 36.5k
-2
votes
Sudden problem with WiFi internet access with one specific Ubuntu 22.04 device with one specific router
It was docker. It had a network bridge that overlapped the IP of my router. Running docker network prune temporarily fixes the problem. For a permanent solution look in here.
0
votes
ip-config-unavailable DHCP error from NetworkManager
Solution
After a little bit of digging, I found out that occasionally, the NetworkManager Configuration can become corrupted. Unfortunately, I didn't save the corrupted file to see what actually went ...
- 111
0
votes
can't connect to bluetooth device after updating to new version
I had a similar problem.
If it helps, yo can look at my question:
Ubuntu can't connect a bluetooth headphones after a update
To sum up: booting the system into an old linux kernel fixed the ...
0
votes
Bluez daemon is not running
see this link for some options:
https://forums.debian.net/viewtopic.php?t=144923
In my case ( Ubuntu 18.04.6 LTS), what worked was: sudo systemctl restart bluetooth , after which enable it
- 101
0
votes
Wi-Fi driver problem
Googling "350b:9101 linux" gives no good results. Similarly searching for "ZTop" finds windows drivers but not linux drivers.
Very likely this device is (currently?) unsupported ...
- 4,069
0
votes
Unable to connect with the hotspot created on ubuntu
This is the most accurate code that can solve your problem
`
nmcli connection down Hotspot
nmcli connection modify Hotspot wifi-sec.pmf disable
nmcli connection up Hotspot
`
3
votes
Accepted
Where does the configuraiton in /run/systemd/network come from in a fresh install of 22.04 server?
The default networking setup for Ubuntu 22.04 Server is to use the Netplan utility to configure and manage networking through YAML files located in /etc/netplan/.
The history and general use of ...
- 1,494
0
votes
I can't connect to VPN under Ubuntu, what is possible on Windows
Were you were using the AnyConnect application to connect on Windows? If so, then you will the need AnyConnect client for Linux. Your server admin will need to provide the installer. Once you have ...
- 114
0
votes
How can I install the driver for rtl8192eu USB 2.0?
If you are searching for realtek rtl8192eu linux driver, then check packages that are available for other distributions:
yum search realtek
yum install rtl-sdr
- 101
0
votes
How to connect to a security camera in linux
can run the Windows version in Wine from kami don't download from Yi site it will not work
0
votes
Editing network interfaces without system rebooting
Another alternative that worked for me:
Edit the /etc/network/interfaces file
Execute the following:
ifdown --all --allow auto
ifdown --all --allow hotplug
ifup --all --allow auto
ifup --all --allow ...
- 111
0
votes
```sudo iw dev``` shows mysterious virtual p2p interface on WLAN alongside normal interface
I was wondering the same today, and after finding only this reference I figured out that NetworkManager created this. Stopping that daemon will also make the p2p interface disappear.
- 1
0
votes
Quectel EM120R_GL modem seems to work but SIM missing or not detected
The complicated answers here are a bit out of date, as Lenovo has updated the official snap.
Install the snap, restart, and Mobile Broadband (in Settings) should Just Work(tm).
sudo snap install ...
- 111
0
votes
Ubuntu 20.04 - network DISABLED
This works for solving similar problems:
sudo su
systemctl stop NetworkManager.service
rm /var/lib/NetworkManager/NetworkManager.state
systemctl start NetworkManager.service
no need to reboot
- 850
0
votes
mmcli -m 0 saying modem not found, but I can connect
For future reference, you can also just use:
mmcli -m any
and mmcli will report on any modem it's detected. Note I'm not sure what it does if you have multiple modems - I've only ever had one.
- 368
0
votes
gpg: keyserver receive failed: Server indicated a failure
Here you can find the answer that really worked for me. In a nutshell, change the key server as the old one no longer exists:
$ gpg --verbose --keyserver keys.openpgp.org --recv 886DDD89
Notice that ...
- 101
Top 50 recent answers are included