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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open port for ip from outside local network

I am very new to the world of ubuntu so I hope my explanation of the issue comes across correctly... I am trying to connect to my Cassandra instance from outside the network of my ubuntu instance. ...
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0answers
11 views

Ping request returns DUP! error with 8.8.8.8 server

If my information is correct, DUP! error, happenes when there is an IP conflict or simply when two devices respond together to ping request. But here the Google Public DNS itself returns DUP! ...
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2answers
126 views

Ubuntu can't set IP to static

Despite my greatest efforts I failed to set my destinated IP on my Ubuntu machine. I did the following: This is my ifconfig result: enp4s0 Link encap:Ethernet HWaddr 28:d2:44:f9:03:a1 ...
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1answer
31 views

Ways to find if a server is infected by a bot

Seeking a method to discover if & where any malicious bot could be running on my Ubuntu desktop and server...and how to safely remove any.
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0answers
26 views

IP connections times out after “Internet usage”

let's start with the typicall: My computer is behaving weird :-( I have been looking for the source of the re-occuring error for weeks, hopefully you guys can help me figure it out :-) What is the ...
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0answers
14 views

How to find IP addresses of devices connected to a bridge?

I have created a bridge name called 'mybridge'. I have added some devices to mybridge. Now how to get IP addresses of the devices connected to this mybridge?
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1answer
53 views

Iptables block all incoming IPs

Is it possible block all incoming IP addresses, allowing only one or two IP addresses access on Ubuntu server?
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21 views

Use endpoint instead of IP in iptables

I am using AWS ElastiCache and I am trying to configure it so that I can access it outside of AWS. Long story short, I have to execute the following command on an Ubuntu instance (AWS NAT instance), ...
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2answers
98 views

issue with settingup multiple ipaddresses on ubuntu desktop (v14.04 and v16.04)

I am trying to setup my desktop such that I have multiple IP addresses using a single NIC. First, I tried to do this temporarily using ip, this works fine, however is only temporarily. To try to set ...
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35 views

How do I connect to my dns server (via gui)?

I'm on lubuntu 16.04 LTS, and want to connect using both ipv4 and ipv6. I'm a linux noob and don't understand the answer given here I prefer to change settings via gui, if thats possible. edit: ...
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1answer
47 views

How to assign IP when a machine is connected to the same network via two interfaces?

I have a Ubuntu 14.04 machine connected to the same subnet via two different interfaces, wlan0 and eth0. The machine is used for normal browsing of internet only. I am to manually assign IP addresses ...
4
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1answer
25 views

Setting up a server with IPv6

I have just upgraded my internet and my ISP (Comcast) sent me a new modem/router in one. I have managed to set the static IP of the server but after searching all over I can't figure out how to do the ...
0
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1answer
26 views

Why am I getting multiple IPs in Hostname -I [duplicate]

I am trying to get the local ip of the system using hostname -I. However, it is showing three IP addresses, instead of one. So, I would like to know what does more than one IP address signify? Also, ...
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1answer
52 views

Get IPv6 address from IPv4? [closed]

Is it possible to do this? I don't care what tool, ping, nmap, nslookup. Hell, i'll even write a bash script. I just need to figure this out. Edit: All I know are IPv4 addresses and I want to see ...
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1answer
27 views

Why is my ubuntu ip always changing?

I have my ubuntu running in a hyper-v vm instance which I access the default apache website from the windows 10 host. everything works great but very often the ubuntu ip is changing I dont know why......
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0answers
12 views

How to achieve resolving of the same hostname to different IP addresses based on location

I have personal webserver with ownCloud installed. This webserver has no public IP address because my internet connection does not offer it. I ordered virtual linux webserver with a public IP address ...
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2answers
10k views

Set static IP Ubuntu 16.04

I am a new with Linux, having years experience with Windows servers/desktops and am having issues setting a static IP. I am using a method used for previous versions of Ubuntu, which doesn't seem to ...
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1answer
22 views

Can I use two differetnt IP addresses for same system

I have created one Ubuntu server for online examination the IP for this is 192.168.104.3 so my clients have range within 192.168.104.1 to 192.168.104.255 this is not internet ip.. I want that same ...
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2answers
1k views

MySQL istallation problem on Ubuntu 16.04 (my.cnf public ip problem)

I follow these instructions to install mysql in Ubuntu 14.04 and it works great. But I make a clean installation of Ubuntu 16.04 and make the same steps to install MySQL and I have problems. The my....
0
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2answers
28 views

IP Address Command Line [duplicate]

What is the command that shows your computer's personal IP address? I have tried ip addr show But that shows much more than I want to see.
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1answer
48 views

Cannot set IPv4 address

I am trying to install Ubuntu 14.04 in HP EliteDesk 800 G2 SFF, in which Windows 7 is also installed. While wired network connection works well on Windows, it doesn't on DVD-booted Ubuntu. Then I ...
1
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1answer
62 views

Ifconfig does not show my IP [closed]

When i'm putting the code on: ifconfig ifconfig results in a terminal shows: eth0 Link encap:Ethernet HWaddr: f8:a9:63:64:3f:1c UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets: 0 errors:0 ...
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0answers
9 views

Alcatel SIP on ubuntu

I want to know if is possible to connect to an alcatel IPX I know that the IPX server that I'm trying to connect use a codec that only the alcatel softphone and phisical phones has...
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0answers
31 views

iface order and influence of empty line

case: # eth0.cfg The primary network interface auto eth0 iface eth0 inet static address IP-1 netmask 255.255.255.255 broadcast IP-1 post-up ip addr add 192.168.100.254/24 dev ...
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0answers
13 views

How to route external traffic via mobile-phone usb modem and use ethernet for internal traffic?

Suppose my internal traffic all goes through some ip like 10.0.0.1 for example. I want to tether internet connection from my mobile phone to my desktop while still have the access to internal network.
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21 views

How can I have the same IP address for Django and WordPress application?

I am currently developing a Python/Django based application on Ubuntu. It is hosted on a dedicated server in a docker. Let's say the IP for this application is www.myapp.com. I also have 10 landing ...
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1answer
33 views

How to supernet Class C IP address with isc-dhcp server?

Is this possible? subnet 192.168.1.0 netmask 255.255.248.0 { range 192.168.5.1 192.168.5.254; }
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1answer
49 views

Why can I only choose 1 IP instead of using 2 at the same time?

I've setted up multiple virtual IP's , but I can only choose either eth0, eth0:1 or eth0:2 . It wont use all IP's at the same time, so I can access my server only with the IP active at this moment. ...
0
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1answer
28 views

unable to give static IP to my machine

I have an issue while assigning static IP to my Machine. I am new to this forum and in Linux world as well, just now I installed Ubuntu Desktop LTS 14.04 on Virtual Machine. When I checked ifconfig in ...
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0answers
108 views

How can i add additional ip on ubuntu?

I have some problem with adding additional IP on Ubuntu. My interfaces file: auto lo iface lo inet loopback auto ens160 iface ens160 inet static address 10.201.120.213 netmask 255....
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0answers
8 views

nm.d already present while launching multiple lxc application containers. Not able to launch more than 1 container

I want to launch lxc application containers on ubuntu. Am able to launch one container with an application. As am trying to launch second container with same application its giving nm.d daemon already ...
1
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1answer
79 views

How can I dynamically determine the IP mask to use for dynamic ranges?

I have a list of ranges for IP addresses that I want to block, the ranges are like 210.80.32.0 to 210.80.63.255 How can I dynamically determine the right 210.80.32.0/NUMBER to capture the full range? ...
0
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1answer
70 views

How to get pc-name from IP address?

Anyone can tell me how to resolve pc-name for a given IP address on local area network ? I went through many answers but no one helped me :/ I am mentioning all tricks I used below :: netstat -a &...
0
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1answer
43 views

How to add multiple ips to ubuntu 12.04 server?

i hope that some can help me here. I have bought 6 additional IP:S and i need to run two gaming servers at same time for same game. So i need to add another ip so i can run these two servers at same ...
1
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1answer
185 views

Setup static ipv6 address in /etc/network/interfaces

After changing to a new ISP last week I got a new IPV6 address at home. The IPV6 address is global so not just for my home connection. Because of this address my mail server isn't working properly ...
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0answers
74 views

Edit wired connections: IPv4 settings: Manual: Routes button

There is a "Routes" button in my Ubuntu 12.04LTS here: Edit Connections>Wired>Edit>Ipv4 Settings>Manual>Routes button Inside the Routes button I can add IP address, Netmask, Gateway, etc. I wonder ...
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2answers
293 views

How to find ip address for the apache2 server on ubuntu?

I have downloaded ubuntu on virtualbox , and I installed apache2 on it ,i did configured the server and it works on "localhost" ,the problem is that i need the ip address of the server ,the command '...
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2answers
46 views

Ssh safe enough?

This question is about ssh Hi i web server for my site, I use ssh :). I know i can port forward port 22 but is it safe enough? Let's say i use a password that takes a million years to crack or ...
0
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1answer
303 views

Permission denied on start-dfs.sh

I am trying to create a 2-node Hadoop cluster, following this guide. The one node is my Ubuntu laptop and the slave node, the 2nd one, is a virtualbox that also runs Ubuntu. I am doing in the master ...
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2answers
39 views

Assign IP Address on DNS

I am a new user in Linux,just started and was given this project to install a new DNS server. I have already installed the server using Ubuntu 14.04.04. Now I need to assign the IP address to the DNS ...
0
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1answer
40 views

Binding a list of IPv4 addresses to Ubuntu Server quickly

Is there a bash script or tool to automatically bind a list of IPv4 addresses to an Ubuntu server quickly? For example, let's say I have a text file named /root/iplist.txt and in iplist.txt, I have ...
0
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0answers
23 views

What is the best way to handle multiple ips safely on a single Ubuntu server?

Previously, I used to add virtual interfaces when I needed to to have multiple ips on a machine. Now, I need to a sign 29 ips to a single machine and virtual interfaces just doesn't seem like such a ...
1
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1answer
135 views

Disable ipv6 in ubuntu 14.04

I found that post How to disable IPv6 on Ubuntu? I need to ask about this file /etc/default/bind9. I couldn't find this file. Where can i find it?
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135 views

How can it bind port with ip address not 0.0.0.0?

I'm new to ubuntu also in networking so if you need more details i can provide you with it I binded port number 7700 , I got error in binding it like error in binding 0.0.0.0/0.0.0.0:7700 I read ...
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2answers
611 views

How to ssh into a server running on a home network, behind a router?

Okay, so I have a PC in my home network, running Ubuntu on a VM with openssh server installed. How can I remotely access it from another computer outside the home network, using the internet? What ...
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0answers
39 views

Access to a service hosted on multiple AP with the same IP/domain

I have a pretty strange problem to solve here. I need to connect to three Access Points at the same time from a single machine with a single WiFi adapter. As you can see here I've done it with a very ...
0
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1answer
52 views

Mask ip on ubuntu

I wat to mask my ubuntu station in the following way:I am having an internet connection with dynamic ip (PPPoE).I want to make some static ip and dns over that connection and use them when I go out.I ...
0
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0answers
29 views

LTSP/xRDP foreign IP address

Is it possible to get the foreign IP address of a user when they connect to the server via LTSP/xRDP - the client IP address? When they are connecting from home their home IP address. Thanks for ...
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0answers
26 views

ip rule problem

i have a weird problem with policy based routing in rule 0, there is some lines appearing and disappearing constantly. below, the output of the command (ip rule list | grep "0:") executed several time ...