Dynamic Host Configuration Protocol (DHCP) allows computers on the same network to automatically obtain a unique IP address.

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Set up internal DNS to point to that DNS server?

I have Windows Server 2008 running on my network with the following properties: Internal IP: 192.168.1.100 External IP: 242.24.124.12 Now I have registered a domain (example.com) and have it ...
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3answers
104 views

How to retain a unique IP on a client with a static IP in a DHCP subnet?

When I say DHCP subnet I mean that the clients are intended to receive their network configuration via DHCP, not statically. Let's observe the following situation: I set up an IP address ...
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1answer
636 views

How can I find out IP adresses of DHCP clients when I setup internet connection sharing with Network Manager (Linux)?

I sometimes configure routers with my laptop and use connection sharing with Network manager and so my laptop acts as DHCP server. I then need to connect (via ssh usually) to the servers that are DHCP ...
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0answers
201 views

How to set up a VM gateway/DHCP and virtual network in CentOS KVM?

Today I have a working setup where the physical host runs W2k3. It has 2 physical NIC's. It runs Vmware server and I have a ClearOS VM installed acting as a FW/DHCP/DNS for both the host and all the ...
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3answers
4k views

How do get Ubuntu to stop modifying /etc/resolv.conf [duplicate]

I want to manually set my resolv.conf and have Ubuntu not automatically change it later. How do I get Ubuntu to stop modifying resolv.conf? I have already set "Automatic (DHCP) addresses only" in ...
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1answer
3k views

Connecting router (SMCWBR14S-3N) to modem (SB6121)

We recently purchased a Motorola SURFboard SB6121 modem and activated it with Comcast. After the technician activated the modem, she instructed me to connect a computer to it and try to go online. ...
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3answers
743 views

Does NAT Map to the MAC Address, or to the Local IP?

I would like to set up NAT to put a service on internet using my Technicolor TG 582 router. I mention the specific router model just to have a reference, but the question goes in general as I may ...
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0answers
238 views

Onkyo UWF-1 networking issue

I recently bought an Onkyo TX-8050 network stereo receiver http://www.onkyo.ca/Products/model.php?m=TX-8050&class=Receiver and a UWF-1 wireless dongle ...
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1answer
63 views

My computer does not use DCHP, it only uses default adress? No network access

Recently one of my computer's network connection stopped to work. When I did an ipconfig I saw that the NIC was using the IP address outside the range of my DCHP server, something like ...
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0answers
169 views

why does my network disconnects from internet every couple of hours?

I have a broadband that here you can see its details. It provides wireless and also I got two more routers that use them as access points. DHCP is disabled on them and these two routers work are set ...
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3answers
870 views

Network is not connecting after startup automatically in Windows

After some perturbations with network drivers now I have a situation where the network is not connecting automatically after the boot-up. It indicates, that the connection is limited or no ...
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243 views

can't obtain ip-address from my dhcp

I can't obtain a ip-addres from my dhcp-server and it's going trough a firewall (pfsense), The firewall(pfsense) and DHCP server are two virtual machines on my physical server(ESXI). As rules i use ...
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23 views

Create a Home Network for File Sharing and access Internet at the same time

I have 2 hosts A (Windows) and B(OSX) with a couple of mobile devices in my network. When I enabled File Sharing on my hosts, I noticed that their IP's keep on changing which is annoying sometimes. ...
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2answers
5k views

“dhcpd failed” error when starting DHCP server

I am setting up a DHCP server on Debain (virtual machine) on Ubuntu 12.04 host, but unable to get it up and running. My configuration is like this, dhcpd.conf ddns-update-style none; option ...
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1answer
37 views

DDNS in BIND9 with custom records

I have BIND9 and DHCP configured to communicate with each other for providing DDNS in my network but I need to also setup custom records as some machines need to respond to more than one hostname. ...
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0answers
558 views

Can't access domain shared folder by name but I can by IP

I have computer with windows server 2008 r2 and a router works as dhcp server. I created a domain on the server and I created users. I made the clients access the network via new users of domain then ...
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1answer
275 views

Wireless to Wired Bridge with Bonjour Service Clients

I want to create a wireless to wired bridge on my rasbian powered Rasperry Pi to connect my DVB-T box to the network. The DVB-T box sends the signal into the network using Apple's bonjour service. To ...
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3answers
5k views

dhcp option 252 what is it?

All over the internet I see example of how to set up dhcpd with WAPD proxy auto configuration using DHCP. In the /etc/dhcpd.conf file There are statements like this. option wpad code 252; ...
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2answers
348 views

DHCP and 169.xxx.xxx.xxx [duplicate]

I have been seeing this a lot at work and at home. At home, a single device will not obtain an IP from the DHCP so it self assigns an IP in the 169.xxx.xxx.xxx range. If I put in a static IP it works ...
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1answer
411 views

In Windows 8, How do I make a static IP for each network?

I would like to have it so that my computer sets its IP address statically depending on which network that it is connected to. I have 3 Networks that I regularly use and it seems that with Windows I ...
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1answer
574 views

DHCP server with multiple interfaces on ubuntu, destroys default gateway

I use Ubuntu, and I have many interfaces. eth0, which is my internet connection, and it gets its info from a DHCP-server totally outisde of my control. I then have eth1,eth2,eth3 and eth4 which I ...
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1answer
581 views

Stop DHCP services on Linux - Ubuntu

How do I stop DHCP services on a particular ethernet port in Linux ? I was trying to take full control of an ethernet port of my computer to inject packets into the device plugged into it without ...
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2answers
951 views

How to configure my 2 router to make them as access points

I have this broadband and the main wireless router: Main Router Also I have two other routers and would like to make them as access points. So All with the same SSID, then the device can choose the ...
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1answer
504 views

Router's DHCP not working after a Windows machine is connected

In my office, there are several computers that are connected to a router/access point. Everything was fine until my wife came in with her laptop. It's on Windows 8. Sometimes, other computers cannot ...
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4answers
5k views

Can I Chain Two Routers Together Keeping DHCP on Both?

I have read that I can connect a second router by turning off DHCP and NAT, but I want the second router to assign DNS (I'm using it as an access point for my kids, and will use OpenDNS family service ...
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859 views

How to fix DHCP giving out numerous bad addresses

Where I work we have run into a major issue a few times in the past month. Our DHCP server will randomly start filling up with BAD_ADDRESS. We have 3 sections in the subnet. (4.x, 5.x, and 6.x) Aside ...
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2answers
394 views

Connection loss to random websites on LAN

I work in as an IT manager in an office where there are 10+ computers. What my question is that, a particular computer has a connection to some websites. The network setup is a LAN connected to a ...
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1answer
5k views

How to run a DHCP server on an ethernet port of a MacBook successfully?

I aim to have an ethernet switch on my MacBook ethernet port from which I will have several Raspberry Pi's connected getting their IP via DHCP, each will have a VNC server running on them for remote ...
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1answer
2k views

Find out dhcp assigned gateway and dns settings in Linux (CentOS)

How to find the gateway and DNS IPs in a DHCP configured network in CentOS? I'm using CentOS installed in vmware using NAT connection and I want to make the ip static.
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1answer
342 views

ASUS RT-N10 router and a 8 port wireless switch to make a network of 10 PCs

I need to set up a 10 PC network for playing games and sharing files. We all use windows 7. I've heard that if I connect a switch to a port on the router and others to the computers then the ...
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1answer
319 views

Separate DHCP scope for domain/non domain computers Windows 2008R2/2012

Is there a way that DHCP role in Windows Server will be giving a different settings (in this example different primary DNS server) to computers that are a part of Windows domain, and computers that ...
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71 views

VPN failure after ISP switch

We are a small library and are trying to switch our ISP, but after the switch we have VPN and SIP failures. We have a DSL modem set up in bridge mode, we have a Juniper firewall, and Windows Server ...
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5answers
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How can I tell if my IP is static or assigned by DHCP on Windows 7?

I don't know if my IP is static or assigned by DHCP. How can I find out which it is? I'm running Windows 7.
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229 views

Can I configure and use 2 DHCP servers in my Home Lab Setup

I am setting up a Home Lab environment for development and testing. The purpose of this lab is multifunctional and the hardware involved is : Cisco ESW 540 24 Port GB Switch with VLAN etc... HP ...
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0answers
159 views

Windows 7 RNDIS client sends REQUEST without DHCP server IP

My linux based board is running a DHCP server on USB0 port to assign a fixed IP to the connected RNDIS client. When I connect Win XP or Ubuntu machine with this board, host machine gets the fixed IP ...
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1answer
809 views

Windows 8 : Force a static IP adress only for a specific network

I am a developer. I need to have a static IP adress when I'm at my office, and would like to use my DHCP at home. Making a reservation on the office's DHCP isn't possible (the router they have ...
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1answer
275 views

What to do if the dhcp server on a home router doesn't update the hostnames?

first question here... Premise: this started trying to setup a VM for mucking around with some completely unrelated software... since i want to connect to it through ssh, for ease of configuration ...
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1answer
577 views

Is it possible to connect to routers configuration if your DHCP is disabled?

I have a router and when I turn the DHCP off I can no longer connect to the configuration page. Is there a reason that I shouldn't be able to connect or is the router broken? If I am doing something ...
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1answer
144 views

Computer connects to the wrong router

I have 2 routers connected together and multiple computers connected to each router. (see image) The problem is that when I connect a computer to Router 1 and let it get the IP automatically, it ...
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2answers
286 views

Can I disable warnings about IP conflicts?

Running Windows 7 x64 Ultimate. I travel with my laptop back and forth between home and the office, and usually hibernate as opposed to shutting down, so I do not need to reopen all the documents and ...
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2answers
312 views

How to use DHCP with manual address in Windows?

In OS X there's an option for use DHCP with manual address: is there any way to do that (or something similar, with any program) in Windows? image: http://i.stack.imgur.com/Lyn0b.png Here's my ...
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2answers
247 views

DHCP Reservation vs Mac address filtering. Are they the same security?

I am able to give an ip address to a wired/wireless device based on the mac address. Other automatic DHCP is turned off. Is this as effective as a security measure as MAC filtering? It just seems ...
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1answer
1k views

Using Macbook pro ethernet as a DHCP server

I'm developing an arduino project with an Ethernet shield. In order to simulate that the arduino is connected to a router i simply want to make the Macbook act as a DHCP server and give the IP to the ...
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3answers
842 views

Why does my computer not always automatically request a new DHCP lease when switching networks?

I've noticed an interesting problem recently where my laptop will not automatically refresh my DHCP lease when changing between wireless networks. Instead, it will attempt to use the existing lease ...
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0answers
57 views

Two wireless extenders with same mac address…How to assign IP address dhcp

I have two wireless extenders, and they both have the exact same mac address (same make and model) Now, they work fine in the network, I just wanted to know how can I assign them specific IP ...
2
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1answer
460 views

Failed to connect to server: The requested address is a broadcast address, but the appropriate flag was not set

My server IP address starts with 128.xxx.xxx.xxx and my laptop gets its address as a DHCP and is of the for 10.254.xxx.xxx I configured the server to look for my laptop and when I start the server it ...
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2answers
79 views

Why APIPA doesn't work with multiple network adapters?

I connected 3 cameras to 3 network adapters in my PC. I don't have DHCHP, so I thought APIPA will do the work. But, camera's installation guide says "If a PC is equipped with multiple network ...
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0answers
264 views

dhcp static assignment doesn't clean bind after DHCPRELEASE

I've got a set of virtual machines inside VirtualBox on a OSX host. My Gateway-VM is Ubuntu 13.04 with 4 NICs. On this machine ISC-DHCP-Server and Bind9 are running and DDNS-updates work fine when ...
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2answers
77 views

how to know what computers are connected to an AP?

The access point doesn't have DHCP enabled, so I can't look the DHCP table. Is there a way to ping an IP and know what AP is using? Edit: I know what IPs are on the network using nmap, but when I ...
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1answer
597 views

Ping retrieves an IP from DNS, but loses all packets

I'm working with a minimal installation of RHEL 6. When I first turned this machine on, it couldn't ping anybody. It turned out that I needed to add the GATEWAY under /etc/sysconfig/networking and ...