Questions tagged [networking]
Managing and using network connectivity on a unix system
8,131 questions
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How can I configure VirtualBox network settings so multiple Linux VMs can communicate locally?
I am setting up several Linux virtual machines in VirtualBox to practice for the RHCSA exam. I want them to communicate with each other for testing networking commands such as ping, ssh, and file ...
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Was there ever a dedicated device for NAT? [closed]
When I'm making network diagrams and things of that nature, often I need to put firewalls and routers in them, and I never know what to do with NAT, often I just draw it as an enclave within a ...
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cannot assign static ip to ubuntu machine using nmcli
I am assigning a static IP 4 address to ens33 interface on Ubuntu 24.04 using nmcli. But I'm getting the error.
Error. unknown connection 'ens33'
The commmand I am exceuting on terminal:
sudo nmcli ...
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Ping not outputting all Transmitted Packets
I am trying to log ping results and graph/analyze the results over an extended duration. I have been using:
ping <address> -D -O -i 0.1 > output.txt
When analyzing the output log I noticed ...
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How to fix a libvirt network setup error
I am creating a new QEMU/KVM virtual machine using libvirt CLI in Debian Linux.
According the tutorial, I must activate the default network using the following command:
sudo virsh net-start default
...
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Automatically connect to ethernet when available
I want my Linux laptop to connect to ethernet automatically when the ethernet cable is plugged in. Right now, if the laptop is connected to wifi, it will stay connected to wifi even after the ethernet ...
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Why is Arch Linux blocking all external connections, even without any firewall enabled?
I've recently installed Arch Linux on my PC, and am having a very hard time hosting any network services from it. I have the firewall disabled, but still, every connection appears to be completely ...
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Is it perfectly safe for the host to build any network structure of bridge type under a Docker container?
I'm thinking about using a Docker container to present complex networks, some causing some trouble, being misconfigured or else: it's for testing purpose.
networks:
frontend:
driver: bridge
...
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Ubuntu server can't get networking set up in university data center
I'm trying to set up an IBM Power 8 server in my university's data center to be used by my department. This is great for us because we don't have to pay for electricity or colocation. However, this is ...
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What is a bond port queue ID?
In Network Manager, there is a property for bond ports bond-port.queue-id. I suspect it's an optimisation setting used by the kernel, but this is just an educated (barely) guess.
What does this ...
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Why is the root distance to my router 2 minutes when pinging it takes 300μs?
I have an Arch Linux system and I am using systemd-timesyncd.service to poll my router for time sync.
My router is a MikroTik one with NTP server set up. The router and Arch are connected directly via ...
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Troubleshooting iwctl / networking , unable to start on arch linux (wlan)
I am unable to start iwdctl on newly installed arch linux. I have both wireless and wired connection. But i want to make sure the wired one is properly working. Prior to this, I had an unusual setup?
...
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manage route redirects received from the default gateway
tldr;
where does a Linux system store route redirects from its default gateway?
First some context:
network1 192.168.1.0/24
default gw: 192.168.1.1
host1: 192.168.1.10
host2: 192.168.1.20
network2: ...
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Ubuntu 24.04.3LTS server lost network access
I've a simple server running as an backup server for my work laptop. It runs Ubuntu 24.04.3LTS with an added LXQt-desktop.
A few weeks ago, I couldn't SSH into it anymore. After inspection, I noticed ...
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Service on raspberry pi only starts working after ssh
I have a rather weird and repeatable issue. I have 3 pi's, left, right, and base. The left and right have cameras and perform computer vision. They regularly send UDP packets to the base. The program ...
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