Questions tagged [ip-address]

An IP address is a numerical address given to any device connected to a network.

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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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How to give a name to a specific interface in a local network? (Ubuntu 20.04)

I am currently trying to set up (as a total noob) a small home server running Ubuntu 20.04. The server is a Minisforum mini PC (U820 model) with two Ethernet ports. The first port is connected to my ...
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How to set ip address correctly?

I apologize in advance if my english is bad i want to ask how to set the ip address, i have written this command, and then saved ctrl + x > Y > enter but the result doesn't match I've been ...
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Ubuntu 20.04.2…Bonded NICs as TRUNK interface…assign IP from a specific VLAN to the bonded NICs?

I am attempting to setup BONDED NICs (2x 10G). We have 6 total NICs, 4x 1G and 2x 10G, do not plan to use the 1G connections at this time. Looks like I have the NICs bonded (no errors in networkctl ...
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Kubuntu accepts conflicting IP address from DHCP server

I connect my kubuntu to a network in a dhcp scope where some hosts has manual IP addresses. DHCP offers IP to my client which is conflicting with one of manually configured hosts, kubuntu accepts this ...
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1answer
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Bad internet access after defining fix ethernet IP-address

I have assigned a fix IP address to my ethernet connection for some project. Since then, my Wifi is extremely slow and sometimes I can't even access webpages. As I'm not specialist into this, so I ...
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1answer
23 views

Static IP address option on first time run of Ubuntu - Who do I ask?

I've installed many versions on Linux and the latest is Ubuntu on a Raspberry PI. Is there any way that static IP settings can be an option when you install the OS for the first time? Not having this ...
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1answer
43 views

Local addresses not resolved when TP-Link router used

Upgraded from DSL to Cable internet. Previously a 2Wire modem/router was used. Now a Netgear CM500 is the modem and a TP-Link Archer A7 is the router. Machines on the LAN cannot see one another. ...
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Command for determining my public IP? (old question)

Command for determining my public IP? According to "Michael K" who answered the question my computer won't know the public Ipv4 address but it somehow knows the public ipv6 address. Why is ...
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1answer
53 views

Where does dhcpclient store address

I have recently had to replace my motherboard (don't ask, if you don't want to see a grow-up cry ;-) ) New motherboard -> new ethernet -> new MAC address -> new IP address via DHCP. As I had ...
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607 views

Can the newest IPAD-pro run Ubuntu as a VM under an app such as VMware?

We just got a new IPAD-Pro and would like to run Ubuntu on it. Previous posts have very much negated this possibility, however the newest IPAD seems to have all of the speed needed; BTW, there is a ...
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771 views

Direct remote access (ssh) with Raspberry Pi running Ubuntu server 20.04.1

I have problems determining the IP address of my Raspberry Pi for LAN-access between the Pi and my laptop. Equipment: Laptop (Ubuntu desktop 20.04.1 LTS) Raspberry Pi 4 8GB (Ubuntu server 20.04.1 LTS)...
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188 views

Multiple public IP's assignment on same server Ubuntu 18.04

Is it possible to assign multiple public IP's to a single ubuntu server? Below is my requirement and need your valuable inputs. My application is a platform where my clients connect to and they have ...
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1answer
126 views

How to Understand Static IP setting

I am using Beaglebone Black and I want to assign it a static IP address. I have gone through this tutorial and I know how to assign static IP. But question is, what is meant by these parameters; iface ...
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Configuring Internet Access on Ubuntu v18.04

All, To enable static IP, I had to update /etc/network/interfaces file and make the necessary changes in my Ubuntu v18.04 VM for the eth0 vitual ethernet card. I added the static IP of 192.168.56.101 ...
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160 views

What is the difference between hostname -i and ip addr linux command

I wasted almost an entire day figuring out why my newly created vm hasn't been allocated an ip address. I was using the command hostname -i which returned 127.0.1.1, however, after using ip addr I ...
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426 views

Internet only connects to certain websites (Google, Wikipedia, Facebook, Twitter)

I didn't change anything before this problem happened. I try to go to any other websites besides the ones listed in the title and it tells me the site's IP address could not be found. I tried looking ...
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weird DNS resolution problem

I am running Ubuntu 18.04, all updates. I encounter a consistent DNS resolution problem with exactly ONE web address, namely that of my university. It occurs when the following conditions are met: [...
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3answers
190 views

how to find a valid Private ip address of the machine out of all the interfaces?

My main objective is to find out the valid interface's private IP address in Linux machine. e.g. I have 7 interfaces and out of 7 I have two interfaces docker0 with IP address of 172.12.2.1 and eth0 ...
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1answer
503 views

Remote desktop conection from Ubuntu 18.04 to Windows 8

I am trying to establish a connection from my Ubuntu 18 to a client's machine via Internet (for support purposes). My problem is how to specify the remote machine using IP address since they share one ...
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1answer
8k views

Only allow access to nginx server when using the full domain name and not the IP

I have an nginx server serving http://example.com which resolves to the IP 1.2.3.4. At the moment, users can connect either by going to http://example.com or by visiting http://1.2.3.4. I only want ...
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1answer
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traceroute is not installing on ubuntu 18.04 LTS

I tried to use traceroute for my networking project. But whenever I tried to install traceroute it shows that Reading package lists... Done Building dependency tree Reading state ...
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1answer
128 views

Ubuntu Server 16.04 ismissing enp3s0 section in ifconfig

This morning our server encountered an error. The IP Add was changed to dhcp, and I tried to set it as a static IP, the one we reserved for the server to be accessible by the local network. After ...
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178 views

Connect Linux Ubuntu to network via Ethernet

I have a laptop with Linux Ubuntu 16.04 on it and I would like to have an Ethernet connection in order to access Internet. The problem is - in 95% of tries to connect via Ethernet, laptop takes VERY ...
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no IP address for certain MAC

Please assist- I have a wifi radio that will not obtain an IP via DHCP. Basically, a DISCOVER packet is sent to the DHCP server, the DHCP server receives the packet, then responds with an OFFER but ...
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What is the most authoritative file/process for managing IP addresses on an 18.04 server?

The 18.04 server installation process creates /etc/cloud/cloud.cfg.d/50-curtin-networking.cfg, which, in turn, seems to generate /etc/netplan/50-cloud-init.yaml. I can't seem to find exactly how 50-...
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1answer
101 views

Cannot WOL dual-booted PC - Firewall?

I cannot figure this out; I swear I am doing everything correctly: In BIOS: Wake from Onboard LAN -> Enabled In windows: I have enabled every capable NIC to Wake on LAN (Magic Packet) I have ...
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1answer
939 views

List all wifi devices on VPN network

I have an OpenVPN server on my Rasberry Pi that I have working successfully. Granted, I don't know a whole lot about networking, but, when I connect, I expect to see all devices (ethernet or wifi) ...
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2answers
6k views

Ubuntu Core wifi configuration issue

My static IP address settings are being wiped out each time I reboot my Raspberry Pi. I just installed Ubuntu Core on a Raspberry Pi 3 but I have struggled to establish a wifi static IP address. The ...
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1answer
5k views

Defining Static IP addresses for Multiple NIC adapters

Just would like to understand how you define static IP addresses for Ubuntu 17.10 server with multiple NIC adapters (i.e.eth0 and eth1) using the /etc/netplan directory. (basically a continuance from ...
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1answer
16k views

ifup returns an unknown interface error

I'm still learning Linux and I'm less familiar with Ubuntu. I have a Ubuntu image that I'm using in VirtualBox on a windows machine. It was able to connect and get an IP address up until about a week ...
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444 views

Ubuntu 16.04 Multiple Network Adapters, Same Network

I need to configure a gateway PC working with Ubuntu 16.04 so that multiple LAN adapters (eth0,eht1,wlan0) communicate within one same network addressing scheme. How can such a configuration be made ...
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1answer
3k views

inet addr missing after ifconfig

I am making a cloud server and am following this video tutorial. Everything went FUBAR when I used the ifconfig command in the terminal and did not receive the IP of my server. I have also tried ...
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197 views

Could I use port 8080 - 8100 (if they aren't in use)? Are open ports fair game?

I am building a reverse traffic server. I have an external static ip address for a server that hosts multiple VM's what I am wanting to do is call that ip address (or domain name) and add a port to ...
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42k views

How to find the IP address for a device on a network

I am trying to get an IP camera connected to my Ubuntu Linux (16.04) machine. At work I am responsible for a camera network of more than 60 cameras, however there I use some window tools to determine ...
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115 views

How can I add an IP adress to a network interface on Ubuntu Server?

I'm currently using Ubuntu Server 16.04.2 in Virtualbox and I'm trying to set up a web server. It seems like my server or rather the network interface "enp0s3" doesn't have an IP address or an "inet ...
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2answers
700 views

2 computers with the same mac address, router won't assign a different ip address after I spoof the mac

ok linux jedis...this one is killing me . I am running ubuntu server 16.04 i have 2 nic adapters with the same mac address. they keep getting assigned the same ip address by my router which is ...
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1answer
2k views

Stop IP-address from changing after reboot [closed]

My internal IP-address (hostname -I) changes every time I reboot the unit. How can I prevent this?
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1k views

Ping LAN computer with hostname

I have setup my LAN and there are a couple of computers connected through a router. Every computer gets their IP address automatically by DHCP running in the router. Each computer has their own unique ...
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1answer
168 views

I need to assign specific static IP in ubuntu server

i have one ADSL Router and static IP for ISP's public ip..i need to set this public ip in ubuntu server and i can access out site world of this server. Please guide me am new to ubuntu server
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RFC7217 (stable privacy addresses) implementation in Ubuntu 16.10

I'm the author of IETF RFC7217, and I'm trying to figure out whether Ubuntu 16.10 implement support for RFC7217. It seems that there is no support in the version of NetworkManager Ubuntu is using, or ...
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2answers
171 views

Can I assign any IPv4 address I want to a network interface in Ubuntu?

Title basically reveals what I want to learn. Theoretically, I can assign an IPv4 address via ifconfig <interfaceName> <IP address>, for example ifconfig myInterface 172.16.25.125. However,...
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How to assign two different interface name on the same NIC card (Hardware MAC address)

I am using a Ubuntu Linux system. For my task I have to run some modules by executing the respective scripts. All the modules must run at the same time in the background but all have different ...
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I've rented a subnet and assigned the IPs to my server. Why aren't they working?

like I said I've rented a subnet and I've set them up with a host on an Ubuntu 14.04 server. I was told I need to change the interfaces file to get the new IP addresses to work, I have tried this and ...
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Scan IP addresses on a wired network

My computer is connected to two wired networks and a wireless network, as you can see in the network settings: The currently selected network is actually a Raspberry Pi Zero connected via a USB cable....
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1answer
3k views

IP address for updates

Our security groups are pretty locked down by IP address. I've been asked to try to find the IP address that any updates would come from so we can create a security group for it. I can't seem to find ...
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Error: java.io.IOException: Communications link failure

I am doing a small project to achieve auto-completion on ubuntu. I run the code in Docker with hadoop. I also use Ampps downloaded from http://ampps.com/download. But I have a problem that I can't ...
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2answers
63 views

What do I share when I connect to a public wireless network

Is there a list of data/infos Ubuntu (or other Linux distributions) share when connecting to a (public) wireless network? Such as mac address, hostname, ...
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47 views

Windows connects, Ubuntu doesn't

I'm trying to connect to a school network that uses MAC filtering (and other restrictions?). I've been given an IP address specific to this machine, and it connects without problem in Windows 10. ...
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441 views

SSH myself using public IP address does not always work

I am running Lubuntu 14.04 and have set up an SSH server. It has taken me ages to troubleshoot because of a confusing fact. At home I can SSH my laptop from itself using either my local IP address (...