The Dynamic Host Configuration Protocol (DHCP) is a network configuration protocol that assigns IP addresses and gateway configuration automatically.

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MAC filtering for DHCP3 server

I am setting up a school network and i have an ubuntu 13.10 sever. I am looking for a way to deny all devices to get an ip, except for the devices which MAC address I specify in a certain list. As I ...
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Question about dhcp server in ubuntu server 12.04

I configured a dhcp server , i then configured a client to take a dhcp ip . I need from server terminal to know the addresses released to my domain Pcs .
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adding request to DHCP starvation using Scapy?

using this code for DHCP Starvation conf.checkIPaddr = False ...
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dhclient.conf supersede stanzas ignored

I'm putting the following lines at the top (also tried the bottom) of my dhclient.conf file: send host-name "hostname"; supersede domain-name "my-domain-name" supersede domain-search "my-domain-name" ...
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How can I share my internet connection from windows to ubuntu?

Okay, so I have a mobile connection attached to my main pc (windows 8.1), the address range is 192.168.43.1 - 255 with the gateway being 192.168.43.1 and I want to share this to my Ubuntu server which ...
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Configuring a network on a multi ethernet port server

Hy to all: I have just installed Ubuntu Server 12.04.3 on a Sunfire X4100 This server has 4 ethernet port, my target is to use: eth0 to connect to the modem and so to internet eth1, eth2, eth3 to ...
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No network out of the sudden on Ubuntu 12.10

Recently, I replaced my network card and had few issues with the new card and the network connection on the office Intel Xeon 5500/Core i7 white box server running 64-bit Ubuntu 12.10. I ended up ...
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DHCP Configuration in ubuntu server 12.04 LTS

I know i can configure DHCP in terminal by installing isc-dhcp-server but what i need is the best GUI program that allow me to configure DHCP settings graphically . Any Suggestion is thankful ?
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Problem configuring dhcp server: Job failed to start

I m trying to configure dhcp server in ubtuntu onto my virtual box and connecting other virtual instance of ubuntu to this dhcp sever i have installed dhcp server using sudo apt-get isc-dhcp-server ...
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LTSP Thin clients Login problem

The situation is: I have created an Ubuntu LTSP 64bit Server with 32 bit clients using steps in this tutorial. I used Virtual Box machine as thin client using same procedure in this tutorial. Every ...
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ssh backup host [duplicate]

I have a pc called MONKEY, when MONKEY is connected to the lan of my network it has ip address 192.168.1.101, when MONKEY is connected to the wlan of my network it has ip adress 192.168.0.107. Now in ...
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Sharing Internet Connection (DHCP) through a Wireless Hotspot

I have an internet connection through a cable modem. The IP address on the cable modem is not static and is perhaps obtained through a DHCP mode. I wish to share this internet connection through ...
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How to reserve IP Address in DHCP Server

I install DHCP Server with https://help.ubuntu.com/lts/serverguide/dhcp.html but I need to make reserve IP addresses for specific machine (192.168.1.XXX) and further to assign a name to each machine ...
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ubuntu 10.04 DHCP server upgraded and now severe problems

We have an Ubuntu server at work. It acts as a DHCP server for 5 machines connected to a private 172.x.x.x network for internet access. The machines netboot from an image on the server. I tried to ...
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Can't resolve local hosts

To start with, my Linux or networking knowledge is fairly basic, so it's probably best to assume that I know nothing. I've been trying (for my own furtherance) to put together some sort of home ...
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Ubuntu 12.04 LAN settings after changing ISP and modem : The Network Path was not found !

There is probably a very simple answer to this but it has me stumped. I have a Ubuntu 12.04 machine on a windows LAN. Previously I could find the shared folders on the system by using ...
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configure dhcp server in Ubuntu 13.10 and other version?

salam (Hi) What is the difference between install / configure dhcp-server in Ubuntu 13.10 and other versions? I see a video about configure dhcp-server in Ubuntu 12 but I can't configure it in ...
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408 error in browser using Google or openid on some networks in Ubuntu [duplicate]

I have searched here and the web and many other people have similar issues going back a few years (My Google Account not working properly with Ubuntu for example), but no one seems to have fixed it. ...
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DHCP for multiple subnetworks with one NIC

I am trying to run DHCP server on Ubuntu 12.04. I need to configure several pools (different sub-networks) using one interface card. So I have configured below: sudo nano /etc/network/interfaces ...
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Ubuntu 12.10 won't use dhcp static lease from my router

I have a Buffalo router running dd-wrt (came stock from the factory with it). I have a DHCP static lease setup for my computer which dual boots Windows 7 and Ubuntu 12.10. When running Windows, there ...
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How to assign unique MAC addresses to sub-interfaces

I'm in a corporate environment with a DHCP server with static assignments for my server. I have one physical nic with several sub-interfaces. I statically assign different MAC addresses for each ...
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Why fixed address assigned to DHCP server doesn't work?

I have an Ubuntu server that runs DHCP server. DHCP server works good normally, but when I want to assign fixed IP address for my clients, it doesn't work. My codes in dhcp server in dhcpd.conf look ...
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How can I stop sending my hostname via DHCP?

Ubuntu sends my computer's configured hostname to any DHCP server it tries to use. How do I stop it from sending a hostname?
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What IP address does Ubuntu assign itself when it cannot reach a DHCP server?

When Windows is attached to a network but cannot reach a DHCP server, it defaults to an IP address of the form 169.254.XXX.XXX. Does Ubuntu do something similiar?
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Thin Client Lubuntu over PXE Server with DHCP and TFTP

I have 10 old computers (like thin clients) without HDD. So i decided to use Lubuntu as Operating System. In my work we have a PXE server with DHCP and TFTP, they built a debian distro before and for ...
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MaaS dhcp cannot be detected at node installation

I am installing a MaaS Ubuntu 12.04 by ISO with virtualbox as the host machine. I have a problem on the cluster management during the process of adding the node. The node cannot detect the dhcp ...
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Ubuntu networking - DNS/DHCP

How to configure Ubuntu 13.04 as my DNS (Domain Name Server) and DHCP server for other Linux client machines? Master server ip configuration- ip address: 192.168.200.100 gateway: 192.168.200.1 name: ...
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Ubuntu Server Static IP Problem

Hi I've been trying and trying to chang emy ubuntu servers IP to static so I can have people join my Minecraft server that I have set up, I've been working on it for 2 days straight with no luck, when ...
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domain-name dhcp option not applying to hostname -f

My Ubuntu 12.04.3 machine is not getting the domain-name option from dhcp applied to the FQDN returned by hostname -f (dnsdomainname returns nothing). Ip config: # ip a 1: lo: ...
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wicd Failed: Unable to get IP address

I have an old laptop (Thinkpad T30) and I have installed lubuntu 10.04 on it. NetworkManager could see the available wifi but the bottom was gray out. It seems that it is an unsolved-bug in wifi and ...
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Why is my network broken, although my computer has an IP address, and firewall disabled? [closed]

Short summary (added after the problem was solved) Apparently some wireless USB network adapter drivers were incompatible with my Linux OS, and in the end I worked around the problem by buying a ...
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How do I override an MTU provided by DHCP?

I'm running Ubuntu Server 12.04 LTS, and I want to override the MTU my cable company provides via DHCP. They provide an MTU of 576 and I want to use 1492. I can change it with ifconfig, but it ...
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Website access only with ip

I recently installed Linaro Ubuntu 12.04 on my cubie development board and I can access websites only with ip adresses, for example I can access google with 74.125.224.72. I also can ping only ip ...
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How can i give internet access to local network via DHCP/Gateway server?

I think i now find myself somewhere between cognitive overload and like a babe lost in the woods. Thus i hope someone out there can assist me! :) I setup a Ubuntu 12.04 server on my home local ...
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Networking stop/waiting error

I wanted to set up a bridge connection for my VMs (I am using KVM). I modified my etc/network/interfaces file and its contents are: auto lo iface lo inet loopback auto br0 iface br0 inet dhcp ...
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Limited or no connectivity on windows clients

here's my scenario Using ubuntu server non gui, I would set up a server with static IP on eth0 then share the connection on eth1 -> connected to a network switch. i did set up eth0 as static, ...
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How do I perform maintenance on a master DNS/DHCP (BIND9/ISC-DHCP) Ubuntu server?

I'm running non-GUI Ubuntu Server 12.04.2 LTS (64-bit) on my 2 DNS/DHCP servers. Both servers are running BIND9 9.8.1-P1 and ISC-DHCP-SERVER 4.1.ESV-R4-0ubuntu5.6. Please note that for DNS I'm ...
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Virtual Box guest (Windows7) in Ubuntu 12.04 (host) not connecting to the internet.

Have a Virtual Box running Win7 inside an Ubuntu host - the guest does not connect to the internet, but the host does. It is using an intel pro/1000 MT Desktop adapter with settings set to ...
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Can't set DNS with Static IP

I'm running Ubuntu 13.04. I uninstalled DHCP. I set my IP address to 192.168.1.200 and it's working just fine. I can connect to it via my other internet network machines. However, I've tried to ...
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Changing/Setting DNS settings on boot

I have a situation where i do not give access to a machine, but there may be circumstances where the IP settings need to be changed. I have overcome this by providing a USB stick with a file with both ...
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Ubuntu 13.04: Ethernet works at office but not at home. DHCP issue maybe?

I am fairly new to Linux and just installed Ubuntu 13.04 on an external USB HD (using the liveCD). The computer the drive is connected to is a Dell Precision M4500 (laptop). After the fresh install, ...
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How to send DHCPD leases to remote syslog-ng

I want to query a DHCP server for logs about leased IP’s every 5 minutes. I am not sure how to run the query from my server or which file to edit. The queried logs will be sent to the server ...
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machine goes to DHCP after reboot

Our server if rebooted goes to DHCP even if we have provided static IP to the server. What all changes needs to be done so that even machine reboots it will boot with static IP. Pl. help.
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ubuntu 12.04 pxe boot fail with message “IP-Config: no response after *** secs - give up”

I followed the DisklessUbuntuHowto and set up my pxe boot service. When configure the dhcp server in /etc/dhcp/dhcpd.conf, I tried to use static IP address as follows, in which "00:22:15:F8:D9:1A" is ...
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Force lease renew for leases in /var/lib/misc/dnsmasq.leases

I have a Raspberry Pi connected to my laptop (running 13.04 with Gnome) via direct ethernet using these instructions. Normally, the RPi will connect and work just fine. However, if I disconnect the ...
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Is there a safe way to disable DHCP from command line?

Short version I know this question is very similar to others and I did really search the Internet for answers, but it seems that no approach is working or the solutions seem to be "to complicated to ...
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Ethernet over GRE setup is not working

Click here for Netwrok Topology I am having problem setup the L2 over GRE tunnel with above hyperlink. The following is the setup commands I used to setup GRE tunnel. create and enable the GRE ...
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Ubuntu FQDN Not pingable on Windows Network

My problem is that my Ubuntu machine seems to have its FQDN setup correctly, yet I cannot ping the FQDN from a windows machine on the same network. Output of various commands on my Ubuntu machine: ...
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Setting up DHCP without ethernet

I'm a noob to networking so bare with me. Since I want to learn how to network, I asked a friend about what I should start with. He told me I should learn home networking first such as DHCP and IPv4 ...
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How to fix DHCP and TFTP server?

I do a job in which I need TFTP and DHCP server. The DHCP settings I should adjust is (I have DHCP and DHCP 3, not sure where to set): default-lease-time 21600; max-lease-time 43200; ...