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Questions tagged [ip]

IP or Internet Protocol. Use this tag for questions about IP addresses or configuration, or the protocol as applied to Ubuntu.

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Ubuntu gets/has wrong private IP address

When I log in via SSH to my Ubuntu server (current LTS 20.04), I get a greeting message with the eth0 private IP. I now needed to change my IPs in my home network from the default 192.168.178.0/24 to ...
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podman container ip address should remain same with disconnect and connect

Assume podman network net1 and container cont1. I connect podman network to a container during creation with --net net1. Also use podman network disconnect/connect net1 cont1 commands to dis-and-...
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How to set static ip of wifi on Ubuntu 20.04 LTS Server

I have a Raspberry Pi 4 (8GB RAM), I want to set static ip in it but I have Wi-Fi connected. Can anyone help me with this as I was not able to find any video on YouTube on this
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ubuntu with firewire enthernet card to ping eachother

I have two PCs with the same iEEE1394a card. Operating system is ubuntu 20. Ubuntu find the IEEE1394 by firewire0. I already insmod firewire-core, firewire-net and firewire-ochi.ko But I can't ping ...
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Connect openVpn

I'm trying to connect via openVpn. I have ubuntu 20.04. My client.ovpn: client dev tun proto udp remote vpn.stend1.vs.com 1194 resolv-retry infinite nobind persist-key persist-tun ca ca.crt cert n....
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connecting to ssh on different network

I want to be able to connect to my server when I am not home, but when I try connecting with my public IP, it shows the message: 'ssh: connect to host ...** port 22: Connection refused' I have ...
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Remmina RDP - Issues with IP range on VPN

I've recently switched to ubuntu after many year using windows 10. After this switch, I couldn't remote connect to my work server (over VPN - OpenVPN). The error in Remmina was "Couldn't connect ...
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Policy based routing rules not respected

My local VM has the IP address 10.2.X.X/24, and I have the following rule/table set up. root@localVM:/tmp# ip rule show all 0: from all lookup local 32765: from all to 192.168.10.0/24 lookup 200 ...
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How to have a same static IP address in all the networks

Imagine, I have an application at office which is bound to use 10.x.x.x IP address once it is installed. The gateway of this address will be 10.x.x.1 and this IP is set as static. So, when I move the ...
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I'm trying to install nextcloud (with a reverse proxy (nginx)) in ubuntu server 20.04 and I have some issues (concerning ips and redirects)

Okey so, basically, I already installed nextcloud a couple of times I managed to make it work locally and there's no problem with that, I even tried it in other server configs like with truenas and I ...
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iptable rules to allow downloading stuff while default policy is on DROP

I was trying to install bind and for some reason I was getting issues most likely due to my iptable rules , I can ping google.ca anybody have any reccomndations down below are my current rulesets ...
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How to disable temporary dynamic ipv6 addresses in Ubuntu 21.10?

By default Ubuntu 21.10 (should be the same for 20.04) does generate temporary/privacy IPV6 addresses. I would like to disable this behavior in order to make my computer into a server, and to do so I ...
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Setting up Mail Server for multiple domains mapped to different ip addresses

We have taken dedicated hosting and using it for hosting multiple domains. The different domains are mapped to different ip addresses. for example example1.com mapped to 1.0.0.1 and example2.com ...
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Connection logs from previous day

I have a problem. I have a vps running Ubuntu server that got ddossed yesterday and I would like to know what ip address it was coming from. We have an ip that we think might be the ddos, but we don’t ...
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How to setup netplan/networkd to detect an IP conflict being putting networking online?

We've hit an issue where our Ubuntu 20.04 systems seem to bring networking up without verifying there's no IP conflict that will occur. Our Red Hat based systems check for any collision and if ...
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Problem on open my Plesk panel from specific IP

I have a Plesk panel that is installed on Ubuntu 20.04. I can open websites, mail, and Plesk control panel from anywhere. But I can't open the website, mail, and Plesk from a specific IP. I trusted my ...
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HPLIP Catch-22: Need IP to install printer / need to install to get IP

I'm installing an HP Officejet 4155. There are no usb ports on it, and HPLIP can't find it on the wifi without having the IP address first. Of course, to get the IP, I need to access from a computer. ...
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Configuring VLAN QoS Mapping through netplan

I am trying to setup a VLAN via netplan with a specific QoS mapping so that I can prioritize traffic through that (virtual) interface. However, I cannot seem to find any way to do that given the ...
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How to cut electricity to USB dongle

is the Huawei E3372 LTE USB stick unlocked, I have a sim inserted in the dongle. The thing is to completely turn off the device to change the external IP of the sim. When I unplug and plug again the ...
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How to access HTTP service by typing IP address in Firefox?

My ip is 192.168.142.128. But I can't access it. I'm running Ubuntu in Virtualbox. How can I fix this?
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Raspberrypi 21.10 Server static IP but boots with 2 IP (one from DHCP?)

Set up pi with a static IP (10.0.0.180/24) following https://ubuntu.com/tutorials/how-to-install-ubuntu-on-your-raspberry-pi Raspberrypi4 -4 with 8g At boot it displays eth0 IP 10.0.0.180 eth0 IP 10.0....
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Splitting traffic between two networks

I have 2 network adapters in my computer, I want to redirect all (internet) web traffic to only one network, how can I do this? I would like to ensure that all web requests go through a specific ...
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When I changed my IP address, ros packages are broken. (Failed to run '"/opt/ros/melodic/_setup_util.py" ': return code 132)

Failed to run '"/opt/ros/melodic/_setup_util.py" ': return code 132 Failed to run '"/home/aoc/catkin_ws/devel/_setup_util.py" ': return code 132 Failed to run '"/home/aoc/...
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Temporary failure in name resolution Ubuntu 20.04.3 LTS

I have a brand new machine and get this error after every reboot. $ ping google.com ping: google.com: Temporary failure in name resolution $ cat /etc/resolv.conf nameserver 8.8.8.8 nameserver 8.8.4.4 ...
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-1 votes
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What's the difference between address 0.0.0.0, [::] and *?

If you run something like ss -tunlp (or netstat -tunlp) you get a list of listening ports. The standard format should be <host>:<port>, eg. 127.0.0.3:5000. But you also see 0.0.0.0:<...
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is it possible to alias a port number?

I want to run a service on a custom port (e.g. jenkins on 8080) and I prefer to access it via browser with a name I can remember, e.g. http://localhost:jenkins which will be an alias for http://...
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Wired interface (enp2s0)

For some reason my internet won’t connect and kubuntu is giving me the error: ip configuration not available I don’t know how to solve the problem and if anyone does please help.
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Implementing IP Source guard feature in linux?

I'm running a Linux router box that I'm playing around with. It's just a standard PC. Do any of you know HOW to achieve "IP Source Guard" functionality in Ubuntu ? I'm thinking something ...
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How to detect router switching in daisy chain network?

We have an embbeded Linux device product which supports the built-in network switch. The device has 2 ethernet ports. By using "daisy chain", 2 or more devices can be chained together. The ...
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Disable ipv4 for a specific process

Is it possible to disable IPv4 on a per-process basis? I would like that a specific process only uses IPv6 for resolving DNS and then for making TCP connections, but without disabling IPv4 for the ...
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1 vote
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Some Websites/Pings return network unreachable 20.04

I am a fairly new user working through the set-up of a dual boot on my PC. The Windows OS is able to reach all websites, and I am using the same connection. (Ethernet into a wireless adapter). The ...
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server address and ip in ubuntu 20.04

I have not used ubuntu much, only when I have to deploy a web. Right now I am trying to deploy a python django web, but I have an issue with ip address. So, I tried python manage.py runserver at first,...
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DNS server (and reverse proxy) with Ubuntu

I have a bunch of Docker containers running on my Ubuntu server. Each one is accessible within the local area network via IP address and port. Is there any way to setup a local DNS server for each one ...
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1 answer
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Multiple IP addresses assigned to the same physical interface AND unable to access internet

Skip this paragraph if you don't want to hear about me. I am not a network engineer, I am not a software engineer. I am a video editor. I maintain a small network of storage servers, and have for ...
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Hot to use a range of IPs on my server?

I need to have access to all IPs of an /26 block assigned to my Ubuntu 20.4 server. Already tried setting the block with netplan, but I only have access to the first IP in it. I've tried with ip too, ...
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1 answer
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ubuntu server 18.04 set dns server name without change after reboot

I am new in ubuntu. When installing Ubuntu, I set the network settings manually and manually set up the IP and DNS server in installation wizard , but now I after installation complete can not change ...
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How can I make Lamp Web Server Stack discoverable to others devices in LAN?

I've followed official Canonical Community tutorial about setup basic Lamp Web Server stack to host WordPress sites (For local development). I tweaked it so it could work well with files permissions. ...
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I am trying to restrict Azure NSG outbound internet traffic and allow only traffic for ubuntu updates for a VM. Do we have static IP for update server

We are checking if there is static public IP which is not changed frequently for the ubuntu automatic updates in Azure VM to configure the same in allowed outbound traffic in NSG.
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PXE server - broadcast port restriction on boot client demand

I would like to setup my PXE server to attribute a correct IP-address, only for clients requesting network boot. Therefor I've configured my network adapter with 2 IP addresses on a different range. ...
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how to change IP Address DNS Only?

I want to change the DNS IP to other than Indonesia, can that happen? because I can only use a VPN, the IP Address and DNS will change according to the VPN. but I want only DNS to change for example ...
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Connection timed out problem

I'm new to ubuntu .. i tried to connect pc remotely using ssh and checked firewall to allow port 22 work .. i used this command to cnnect ssh user@111.111.111.111 but got ssh: connect to host 111....
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Logged into remote server with key but can't upload file with scp

New to Ubuntu, I logged into my institution's remote server having generated a private/public key pair. I was set up with a username after sending the administrator the public key. I should have been ...
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1 vote
1 answer
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Where is the Internal IP address stored in Ubuntu?

Is there some file in the Linux-Ubuntu filesystem that contains the internal IP of the machine running it? Ideally, is the output provided by the following command hostname -I saved somewhere in the ...
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Network Connectivity Problem after changing IP

I have a weird problem I have two networks (Site A) and (Site B) connected via a cisco router Site A has pcs like A1, A2, A3 Site B has pcs like B1, B2 (Windows Server) , B3 (Ubuntu 18.04.5) All pcs ...
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Can't set MTU lower than 1280

I'm using OpenVPN and it only works when my network interface MTU is 1200, I can change MTU to 1200 with this command with no problem: ip link set dev eno1 mtu 1400 But as you know it's temporary, ...
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Container can't connect to host public ip after ip change

First of all hello y'all. I've been working on a docker server for my company with several containers. One of them is an apache container with proxy enabled in order to proxy reverse the adress of the ...
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vsftpd LAN and WAN access configuration

I'm using Ubuntu Server 20.04 LTS baremetal, with the latest version of vsftpd. I have a very small FTP server at home, but I'm facing the following issue: If I set the local IP on pasv_address (...
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Giving user privileges to setup can bus

I would like to give a user the rights to be able to create a virtual can bus without having to be sudo. The command I want to execute is ip link add dev vcan0 type vcan For this I have used sudo ...
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NetworkManager is supossed to create a file everytime it connects to a wireless connection?

Here is the NetworkManager.conf NetworkManager.conf [main] plugins=ifupdown,keyfile [ifupdown] managed=false [device] wifi.scan-rand-mac-address=no My question is why the constant reconnection to ...
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Can't ping or access specific website

I have tried pinging this website: www.epfl.ch or accessing it in my browser on ubunut but I can't. I know as a fact that the website is running since I can access it from my android phone. Also if I ...
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