Dynamic Host Configuration Protocol; allows computers on the same network to automatically obtain unique IP addresses and other network configuration parameters.

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two different name servers for home network and vpn network

As a disclaimer: I am new to linux. I have the following setup: At home I have a router (AVM fritz box) that serves as a dhcp server and "dns" server for my local network. I don't know if it is a ...
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1answer
14 views

Win Server 2008 DHCP on Virtual Network

I'm new to network stuff. I have 2 virtual computers running in VirtualBox: 1 on Win XP and 1 on Win Server 2008. I'm trying to create a DHCP server and DNS server on my server. I know how to add ...
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3answers
67 views

Windows remembers old DNS suffix

I just changed the DNS domain of my local network from home.local to mydomain.local, after purchasing mydomain.com. I made all the necessary changes in my BIND and DHCP server, and linux clients on ...
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30 views

How to force “DHCP Discover” on Windows 7

I found that at certain network, Ubuntu, installed in my laptop, could not get DHCP address, whereas Windows 7 can get DHCP address. Thus, I tried to dump packets related to DHCP address acqusition ...
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23 views

Trouble with Static Leases on DD-wrt router

I'm having real issues trying to set up a new DD-WRT router. It is a netgear R7000 with build DD-WRT:- v24-sp2 (12/15/14) std - build build r25344 My set up is basically:- BT Home Hub 4 (Using just ...
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8 views

Autoresolve a hostname via “closest” network - how?

Having all linux(redhat) machines always on one VPN network and moving them between different LAN networks, how to setup hostname resolution(/etc/resolv.conf?, and DHCP server?, and DDNS server?, and ...
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39 views

Could not start DHCP client on windows 7 home premium. Error 5 access denied

DHCP client didn't start automatic. Trying start from services: Windows could not start the DHCP Client service on Local Computer. Error 5: Access denied. What should be fixed please?
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12 views

Linux IP aliasing with single DHCP and single STATIC IP address

I'm working on an embedded system with a single physical ethernet device. Using aliasing, I'd like the device configured such that one static IP address (call it s.s.s.s) is ALWAYS available. The ...
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1answer
59 views

Removing DHCP and DNS from Windows AD Domain

This is my first time posting here, so please bear with me. I have been searching for this answer for a few days now with no luck. Maybe my google-fu is not strong enough. I am a software engineer ...
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3answers
74 views

How to get an unused (on another host) IP range

I'm working on an embedded system that will feature a ethernet connection to a PC host. The product contains a DHCP server so the PC can automatically get an IP assigned. In order to not interfere ...
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1answer
46 views

Why unconnected network card periodically sends DHCP requests?

I have a PC with windows 7 OS. The PC has two network cards, one built-in 100Mbit, one PCI-E 1Gbit. The 1Gbit interface is connected to a linux-based router with DHCP server. The server provides valid ...
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3answers
61 views

What to consider when putting a router inside of another network, not controlled by me?

this question is a question from an users point of view, and a noob regarding network technology. I am living in an appartement block, where the internet is routed central (lets call it that way). ...
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1answer
15 views

DHCP List not empty after disconnection

I have a wimax modem connected to a router, a TP LINK router, the weird problem I am having is that it keeps dropping wifi, and I cannot reconnect to the wifi again. I connected the router by wire, to ...
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3answers
47 views

Why does my router stop giving out IP addresses

I've got a Cisco Linksys X3500 ADSL2+ router which we have been using fine for a long while, until all of a sudden, the router stopped providing IP addresses after a certain amount of clients were ...
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34 views

Wireless Range Extender cannot connect to the internet

The Wireless Range Extender improved the internet signal, but the internet cannot be accessed. Router IP Address: 192.168.0.1 Subnet Mask: 255.255.255.240 802.1d Spanning Tree: Disabled DHCP ...
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17 views

With new DNS settings, certain webpages break

I administer the network at a school. I recently changed our router's DHCP settings to use the DNS servers 208.67.222.123 and 208.67.220.123, the former of which is the OpenDNS FamilyShield server. ...
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2answers
52 views

How to ignore DNS servers coming from DHCP

I use one of those dns services that let you bypass region restrictions on Netflix and similar sites. However I noticed that recently it stopped working, even though I set up the service's dns ...
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30 views

DHCP server in separate broadcast domain and option 82

Recently studies of DHCP servers raise some questions, which I cannot find the answers to using Google. Many documentations state: "If there is only one subnet declaration, and no network interfaces ...
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18 views

What should /etc/dhcp/dhcpd.conf look like for a single router when configuring shared-network

Hi I'm just doing some tutorials to learn about networking, and I came across segregating a safe and unsafe network with DHCP using isc-dhcp-server This is what my config file currently has: ...
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1answer
36 views

Ignore DNS servers from DHCP lease

I've an Ubuntu box. When I connect to a wifi network, I get the IP address for wlan interface using dhclient. The problem is, I don't to use the DNS servers provided by the DHCP lease. How can I do ...
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1answer
34 views

DD-WRT sends itself as the DNS server to DHC clients

I'm using DD-WRT on my router (version DD-WRT v24-sp2 (12/11/14) mega). WAN is configured to have static IP and LAN is configured to have a DHCP server provide addresses/DNS, etc to clients. All of ...
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1answer
75 views

Change DHCP IP Pool Starting Address

How can I change DHCP IP Pool Starting Address from 192.168.1.xxx to 192.168.10.xxx?
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1answer
98 views

Two routers, same network, different SSID and password

I have a question about router configuration that I haven't really found an answer to. What I have: SSID: House A: A ZyXEL DSL-modem (660 Prestige) with built-in WLAN and DHCP-Server. IP: ...
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1answer
27 views

Tomato firmware with separate DCHP server

I've got a Tomato router which works wonderfully, but I've also got a Windows server that I would like to use as the DHCP server instead of the Tomato router. I know that I can configure each client ...
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39 views

Java permissions & CLSID for an Agilent 34980A multiplexer unit

I am using a 34980A unit as a multiplexer, that requires Java to view the multiplexer switches through an Internet browser. To operate the instrument I have to be offline and use DHCP, to enable the ...
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2answers
71 views

Specific ip settings for different wifi access points

I have a situation where I want to connect a tablet to two different networks, not simultaneously but switching from one to the other (and at different locations). The tablet is running on Windows ...
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51 views

Netgear WNCE4004 Wifi Adapter Connection Trouble - Static IP Issue?

Here's my situation: I'm in the military and live in an accommodation block where internet is provided by an unprotected wifi network (I'll call this 'service wifi'). To get internet access, I login ...
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15 views

ddclient updating to public IP instead of private IP

This is the antithesis to question 389125 I have private services (apache, ssh, synergys for example) accessible on a desktop on the local network. This is not with centralised login (ldap/AD for ...
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1answer
56 views

How does client know which wifi router to use?

I have two questions regarding my home network. It is currently set up as follows: Cable broadband -> NetGear CG3000v2 Modem (ssid:WIFI0) -> eth -> TP-Link WDR3600 (ssid:WIFI1) -> Netgear Router2 ...
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1answer
41 views

How can the DHCP routers option work if it's my own IP address?

I'm setting up a T-Mobile USB 4G data modem on Ubuntu 14.04 and I'm not making sense of the DHCP lease that T-Mobile gives me. Specifically, the value of the "option routers" is identical to the ...
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72 views

DD-WRT to push alternate Name Servers to clients over DHCP

In order for WiFi DHCP clients to use directly 8.8.8.8 and 8.8.4.4 as name servers, DD-WRT has been configured as follow add dhcp-option=6,8.8.8.8,8.8.4.4 in /etc/dnsmasq.conf (reboot) since that ...
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59 views

How to set up Networking and DHCP in windows server 2012 inside VirtualBox?

Background: Three operating systems are installed inside VirtualBox: Windows Server 2012 R2 Windows 8 Pro Windows 8 Enterprise So, I want to set up the Server 2012 R2 as Domain Controller, DHCP, ...
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1answer
92 views

Network Config (Alcatel GPON (I-241W-S) & TPLink TL WR1043ND)

I have a fibre to home internet solution configured at my place, the Alcatel GPON receives the fibre cable and a LAN cable is fed from it to the TP Link router where the ppoe connection is etablished ...
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0answers
14 views

dhcpd3 not reusing IP for mac

I have an ip range with two ip-addresses defined as follows in my dhcpd.conf: subnet 192.168.1.0 netmask 255.255.255.128 { range 192.168.1.10 192.168.1.11; default-lease-time 600; ...
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1answer
48 views

Can I make my Router (DD-WRT) act as DHCP server for an unmanaged switch that is not connected to it?

+-------------+ +----------------------+ | | | | +------------+ | Cable Modem ...
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29 views

How does DHCP work when it's not “between” your modem and devices?

I've been looking into different options for running some services on a home server. One such option is Amahi. During the setup process they recommend shutting off any other DHCP server on your ...
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0answers
23 views

Domain name is not appearing in “work network”.Instead it displays “Network 9” [duplicate]

I have configured isc-dhcp-server and provided a domain name "anbu.com" along with the IP addresses and other details. My Windows 7 client got its IP address from the DHCP server. In the Network name, ...
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7 views

Cisco 1131AG: Wireless clients randomly unreachable

I have a weird issue with my 1131AG-E-K9. I set up a lab at home to get back into the topic after a few years break. My 1131AG is connected to one of the PoE ports of an ASA5505. Clients are 2 ...
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41 views

Split current network installation in two Vlans

here I got a (really) tricky problem In my home I have a basic router from my ISP and the DHCP Server that serves every mac address with a static IP in this configuration : Family devices : ...
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1answer
224 views

Network interface configuration on Debian 6 (No DHCPOFFERS received)

I am trying to configure an interface to allow internet connection on a home server which runs Debian 6 x86. The server is behind a router which has DHCP enabled. The router IP is 192.168.1.1 with ...
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1answer
46 views

Internet access without NIC card?

If have a USB modem dongle for INTERNET connection. Can i access INTERNET from a brand new desktop/laptop without NIC card using this dongle? I feel that the dongle is just a modem ( with a DHCP ...
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0answers
116 views

Windows 7 DHCP flooding server with requests

Am attempting to connect a Windows 7 laptop to a Debian server running dnsmasq. The Windows 7 machine doesn't seem to like the DHCP info it's getting as it re-requests it every ~10 seconds. The log ...
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1answer
35 views

Unable to Set up DHCP and TFTP on Ubuntu

I want to transfer my kernel image to beaglebone black, and the guide mentions that I should have already set up DHCP and tftp on the host machine. I have set up the TFTP using: sudo apt-get ...
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1answer
61 views

How to setup this home network to allow connection between two subnets?

I have my home network currently set up like this: The Thomson router (192.168.0.1) is from my ISP and is pretty crappy. I have a much better Draytek Vigor 2820vn router that allows me to use ...
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1answer
26 views

Why doesn’t Windows Vista get an address from the DHCP server?

My Windows Vista PC does not get an IPv4 address from the DHCP server; viewing the network properties shows something (likely the DHCP request) being sent, but no packets being received. Manually ...
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1answer
34 views

DHCP with SOHO Routers turned off with DHCP Server

I am trying to learn some networking right now. I currently have a DHCP service running on my SOHO CISCO Router. If I turn off my SOHO's DHCP service and setup DHCP on a physical ...
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39 views

DHCP configuration for local DNS server

I have a server at home with several other computers/devices using DHCP to connect. The DHCP service is provided by the router. My ISP gives me a dynamic IP address so I use no-ip to get a fixed DNS ...
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56 views

Arch Wifi - Connects but doesn't stay connected

Arch x86_64 (plain install on mSATA via USB) Linux 3.17 NetworkManager DHCP enabled at boot via systemctl Generally, the host computer is a Surface Pro 1 w/ Marvell Avastar Wifi Card and connected to ...
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1answer
52 views

What could be disturbing DNS lookup on the local network?

Three windows computers setup to use hard coded 8.8.4.4 and 208.67.220.220 as DNS servers are not experiencing any problems. These servers were found using the DNS benchmark utilitiy found here. ...
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1answer
168 views

Windows Server DHCP role not working correctly in VMware Player

I've got a Windows Server 2008 running in VMWare player with the following roles: Active Directory Domain Services DHCP DNS The server is using the following credentials: The IP of the (DNS) ...