Questions tagged [networking]
Managing and using network connectivity on a Ubuntu system
17,576
questions
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12 views
Ubuntu 18.04 stopps resolving .local domains, but not always
I've been trying to format a Drobo to use with linux. While I was doing this ubuntu suddenly stopped resolving .local domains, breaking big parts of my configuration. I could fix this by just using ...
0
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0answers
28 views
Run Homebridge on crontab
I have installed homebridge on my Raspberry and want to run it on startup, so I added
crontab -e
@reboot homebridge &
to the crontab file. But on reboot the PI always stops at the login form (...
0
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0answers
20 views
Setting up networking through ethernet port on laptop
I am trying to set things up on my laptop so I can connect to my router through Wifi and use the local ethernet port to connect devices in my home office through an ethernet hub, including an all-in-...
0
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0answers
74 views
How to make VPS more secure with UFW?
I have 3 VPS based on Ubuntu 18.04 server OS and would like to open particular ports on each servers.
The ports, that I would like to open are:
Then let's take a look on the environment:
As you ...
0
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0answers
60 views
Only last NIC in netplan config is accessible
Server has 4 NICs and one bridge (irelevant for discussion) configured by netplan. After running netplan apply --debug I get following merged config:
DEBUG:Merged config:
network:
bonds: {}
...
-1
votes
0answers
20 views
need to download a “dpkg scsm7.4.2.8003_UbuntuXXX_x64.deb” for Ubuntu 18.04 LTS version. Thank you much
Where do I download a "dpkg scsm7.4.2.8003_UbuntuXXX_x64.deb" for Ubuntu 18.04 LTS version. Thank you much.
0
votes
1answer
32 views
Issues when connecting to network on Ubuntu 18.04.3
I recently installed Ubuntu 18.04.3 on my Dell Inspiron. At my school, usually there is a pop-up asking for your school username and password. It used to work just fine when I used Windows 10. However,...
0
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0answers
60 views
traceroute not working
traceroute --help
bash: /usr/lib/command-not-found: /usr/bin/python3: bad interpreter: No such file or directory
Trying to run this command but the error shows up.
sudo apt-get install traceroute -y
...
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0answers
14 views
Usb thetering not working in ubuntu 16.04
Usb thetering not working to establish internet connection using usb data cable . Also the networking menu or option doesn't show up in upper right corner of tab menu option??
0
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0answers
23 views
Global proxy behind a corporate firewall
There is an issue I try to solve. One of my PC running Ubuntu 18.04 is behind the corporate firewall. My problem is, that there is not just 1 IP address to the outside. The firewall provides a script (...
1
vote
2answers
32 views
Setup ping reply
I have Ubuntu machine running on AWS cloud. System not replies to ping from Interet side. How to enable this?
I have Enabled UDP port 7 in inbound rule, but this not helped.
Content of /etc/ufw/...
0
votes
1answer
61 views
Can I use kernel version 5.2+ on Ubuntu 16.04?
The question is as the title says: Is it possible to use Kernel version 5.2+ on Ubuntu 16.04? From a quick search, I find multiple ways to do it on Ubuntu 18.04 and forward, but nothing regarding 16....
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0answers
20 views
Group Policy Objects (GPOs) for Linux
I have a windows server and different platform clients. I want to set up group/domain policy on my network.
Is there any solution to implement GPO for Ubuntu client substitute of third party ...
0
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0answers
37 views
WiFi USB adapter with Linux drivers not detected on Ubuntu
This product.
This repo.
lsusb without the adapter plugged in:
mmkstarr@sqirly-syllybus:~/computers$ lsusb
Bus 001 Device 007: ID 25a7:fa23
Bus 001 Device 006: ID 1a40:0101 Terminus Technology ...
0
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0answers
28 views
Installing Ubuntu Server 18.04 on Intel board S500VSA
I am relatively a newbie level user on Ubuntu. I have a few laptops that run Ubuntu desktop and I was able to get them going (with some forum searching help).
However, this time all my searches did ...
-1
votes
0answers
30 views
server in own network reachabal but not over externel ip
ok i think i have to explain myself. Im running an old build of Ubuntu (18.04.3 lts) but i was to lazy to update. I am now trying to build a homeserver of this mac mini on which ubuntu is running. I ...
0
votes
1answer
59 views
No domain on LAN, local DNS fails
At the moment, I am using a router which has a domain name as part of its settings. Two days from now, I change ISPs, which means a router with no visible domain name in settings.
In preparation for ...
0
votes
1answer
98 views
Ubuntu 18.04 no internet connection
I have internet connection problems using Ubuntu 18.04 on my laptop. It's a dual boot with Windows 10, no problem under Windows 10, same router, same router configuration, same laptop, but no internet ...
1
vote
1answer
93 views
iptables string match does not work whe the --to option is < 52
when I enter iptables rule which match string and the --to option is >= 52
example
iptables -I FORWARD 1 -m string --string anypattern --algo bm --to 100 -j DROP
The above works properly and ...
1
vote
1answer
133 views
Kubuntu can't connect to WIFI
First of all, I would like to say that I have searched and tried everything suggested and still having this problem. I am unable to connect to any wifi available, I have tried my home wifi and my ...
1
vote
0answers
28 views
block flow with iptables
To block packets containing some string we use the following iptables rule:
iptables -I FORWARD 1 -p tcp --dport 80 -m string --string anypattern --algo bm -j DROP
This will block the packet ...
0
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0answers
18 views
How to share one Network Interface's Traffic between several containers(LXC/LXD)
We want to share one Interface's traffic between several containers(LXC/LXD).
The interface is Gigabit with no IP. It works for one LXC.
I was thinking about making several sub_interface and ...
0
votes
0answers
12 views
No Option for Wireless Internet Connection Ubuntu 18.04 LTS [duplicate]
I recently installed Ubuntu 18.04 on my MacBook Pro, this is my first time using a Linux OS. I do not have an option to connect to wireless internet, though I can use a wired connection with an ...
2
votes
1answer
48 views
Strange output for netstat command
I'm getting a strange output for the netstat -tup. What I mean by strange is I never got this output before when nothing connected to the network/internet (connected to the network, but not using it, ...
0
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0answers
26 views
Firefox browser internet protocol leaks?
im using the mullvad vpn client on ubuntu 18.04.
just wanted to ask a question in relation to browser internet protocol leaks-im using the mullvad client on ubuntu with the firefox web browser-is it ...
0
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0answers
20 views
Why use iptables-persistent?
What is the advantage of iptables-persistent over an init script?
I checked the output of iptables-save, and there were a couple gorillion lines, from docker and others.
What trouble might I run into ...
1
vote
1answer
49 views
Troubles Installing
I remember using multiple floppies and taking nearly a week with my young geekie son in the early 90s to install Linux, hardware and all. Off and on used many flavors past two decades or so.
All I ...
2
votes
0answers
39 views
TP-LINK TW-WN821N works at half the Windows speed
THIS IS NOT A DUPLICATE
Why is my WiFi dongle so slow?
I have googled this many times. I can't bear this. I have tried a lot of the commands. A lot of them didn't work. I believe I turned 808.11n or ...
0
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0answers
54 views
Reverse proxy access via wireguard shows external IP
On my ubuntu server I run different services in docker behind an nginx reverse proxy.
Some are accessible from the internet, some should only be accessible via wireguard.
The acces via wireguard is ...
1
vote
2answers
110 views
Unable to see USB wifi
I recently upgraded Ubuntu from kernel 5.0.0-37 to 5.3.0-26 (x86_64). It seems coincident with this upgrade, my wifi USB dongle stopped working (Archer T4U). It normally has some flashing lights on ...
0
votes
1answer
23 views
Why doesn't Ubuntu Server come with wireless-tools package installed?
I am having to haul my giant case downstairs to the living room router when dad's at work not to bother him and lug through my cables bin to find an ethernet cable to temporarily use a wired ethernet ...
2
votes
0answers
61 views
ubuntu 18.04 LTS not recognizing intel wifi card 8260 on dell latitude E7470 laptop
My wifi was working up until today, when I could not turn on wifi and in the wifi settings window it says "wifi adapter not found".
I've been looking at all answers to do with keywords "ubuntu wifi ...
1
vote
1answer
62 views
wi-fi adapter not found on Ubuntu 18.04
I know this (kinda) a repost, but all the other threads on here haven't helped me so far.
I put a drive with an existing dual-boot setup of Ubuntu 18.04 and Windows 10 in a new laptop. The Wi-fi is ...
1
vote
0answers
36 views
Why is my isc-dhcp-server not handing out the router address to clients with reserved addresses?
I'm running isc-dhcp-server on Ubuntu 18.04. Clients without a DHCP reservation are able to get an IP address, subnet mask, default gateway and DNS servers from the pool no problem.
As soon as I ...
1
vote
2answers
81 views
How to fix failing connection to SAMBA print share (Ubuntu 19.10)?
I have lately installed Ubuntu 19.10 and wanted to connect to the printing services on a local network, shared for linux users via SAMBA. While this worked flawlessly with 18.04/18.10, it's stopped to ...
0
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0answers
20 views
I cannot connect to the internet in my Xubuntu vm among other things
I'll go through with you the steps I took before my internet broke and explain to you what I've tried.
I was trying to install ros melodic for use with gazebo and px4 because it wasn't running and ...
0
votes
0answers
40 views
Share Internet over Wif-Fi hotspot network
A Wi-Fi hotspot is created on computer C1. C1 is not connected to any other network. A computer C2 is connected to this Wi-Fi network and to Internet. Is there a way to configure C2 to share the ...
1
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0answers
58 views
Disabling IPV6 leads to default route being lost on reboot
I have a new dedicated server from Heztner. I am running Ubuntu 18.04.3 LTS (minimal).
I have a problem which results in the default route being lost on reboot, killing all connectivity to the server....
0
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0answers
22 views
wpa_supplicant[907]: TDLS:Invalid frame
I'm investigating a system freeze and I came across the following in /var/log/syslog
Jan 22 08:40:41 hostname wpa_supplicant[907]: message repeated 42 times: [ TDLS: Invalid frame - payloadtype=1 ...
0
votes
0answers
59 views
Xiaomi RedmiBook 14" Ryzen Edition broken WiFi
Running
Linux RedmiBook 5.3.0-26-generic #28-Ubuntu SMP Wed Dec 18 05:37:46 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
lspci reports the device
01:00.0 Network controller: Qualcomm Atheros QCA6174 ...
0
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0answers
25 views
UFW blocking even after adding allow rule
I'm running 16.04 LTS for my Unifi controller and have always used UFW.
I've always had UFW enabled and it's always worked. Lately, it seems that some rules don't even work anymore - can't even ...
2
votes
1answer
445 views
18.04 with VirtualBox 6: Need Help installing alfa awus036ach USB attached WiFi
I am trying to install the USB-attached alfa awus036ach WiFi adapter to look at my home network with Kali as a virtual machine.
Very new to Ubuntu, Linux, and command line. I installed Ubuntu 18.04, ...
0
votes
0answers
19 views
Iptables help - How to forward Multicast UDP to LAN interface?
I'm trying to forward incoming multicast traffic to my LAN.
This is the packet I can see coming into the WAN interface.
192.168.60.5.50258 > 234.5.6.7.8910: UDP, length 1000
Wan - eth0.2
Lan - ...
0
votes
1answer
118 views
Windows 10 share no access
Attempting to move media from Windows 10 to Ubuntu folder on the same network. I created a share user name/password and can log into the server, but have no access to the folder from Windows.
Image ...
0
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0answers
13 views
How to configure cups server automatically based on network
I bring my laptop along between different locations and networks, and in order to print, I have a separate .cups/client.conf (specifying the ServerName and user) for each network, with client.conf ...
0
votes
0answers
29 views
why does gnome wifi hotspot window keep popping up?
I have Ubuntu18 LTS running on an old iMac.
I have the wifi hardware disabled and my router doesn't have a portal.
For some reason hotspot login keeps opening and closing and my network icon changes ...
0
votes
0answers
49 views
USB Wifi Adapter FayTun stopped working
my wifi adapter somehow stopped working (together with my graphics card) on my Ubuntu 18.04 machine. After reinstalling my Nvidia driver my graphics are working again, thats not a problem. But somehow ...
0
votes
0answers
19 views
network connection disruppted while installing octave
I was installing Octave on Ubuntu 19.10 based on instructions available here
http://ubuntuhandbook.org/index.php/2019/07/gnu-octave-install-snap-ubuntu/
so after doing
sudo snap install --beta ...
0
votes
0answers
46 views
Bridging two interfaces together, forward traffic
I'm currently trying to create a setup that forwards traffic through a Ubuntu server to a switch, which then multiple servers will be connected to (each assigned an individual IP(s)) The Ubuntu server ...
0
votes
0answers
31 views
Thunderbird fails to connect to all accounts
I have an existing Thunderbird profile that I use across several devices (keeping in sync the directory). Today I installed Ubuntu 19.10 and Thunderbird 68.4.1. I imported the existing profile with no ...
