Dynamic Host Configuration Protocol (DHCP)

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Windows DHCP server not sending all options

I'm facing a strange problem with Windows Server 2003 and its DHCP server. Here is my scope and its related options. However when I look at the traffic using Wireshark, here is what the server is ...
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1answer
120 views

Forwarding all HTTP/HTTPS traffic to a port with iptables

I'm trying to setup a wireless network that routes all traffic to a local webserver (basically a hotel wifi login page). Here's my dhcpd config: $ cat /etc/dhcpd.conf ddns-update-style none; ...
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1answer
2k views

deny unknown-clients dhcpd.conf

I'm having troubles figuring out how to set up my dhcpd.conf. I am rather new to this. I want to allow booting and only allow the clients listed below to get their fixed address. I do not know how to ...
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1answer
2k views

Cannot find the DHCP Server

The network was fine yesterday and as far as I know nothing has been changed or added. This morning some computers are connected to our domain but most of them are reporting limited connectivity. On ...
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2answers
229 views

Set up DNS and DHCP roles on Win 2008 server. Why don't clients show up in Explorer?

I disabled the DNS/DHCP on my router and activated those services on a Windows 2008 server. Everything is working fine, but when I go to browse the network none of the machines can see any other ...
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1answer
1k views

How could I fix “No subnet declaration for restart (0.0.0.0)”?

I have a DHCP service installed on my distribution, Backtrack 5 R2 (ubuntu 10.04) and it was working fine, but when I began to configure DNS it suddenly stoped working, how can I make it work again?? ...
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1answer
92 views

DHCPv6 Server IP address

I am new to DHCPv6. In dhcpv4 we have Option 54 to retrieve the Server Identifier (ie. Server IP address) in DHCP message. Similarly how to retrieve DHCPv6 Server IPv6 address in DHCPv6 Message. I ...
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1answer
622 views

Error - reading DHCP configuration file. No such file or directory. Solaris 10

I'm currently working on a Sparc Sun-Fire-280R running Solaris 10 8/10. The machine has dhcp-server preconfigured to use NIS from the onset but I don't have any knowledge of where those config files ...
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1answer
420 views

Combine static and dynamic setup in dhcpd.conf

I'm trying to migrate from a situation with static ip addresses and a dhcp server on a router to one new dhcp server. My idea was to add the current static ip addresses as static ip addresses in the ...
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1answer
473 views

How do I setup Ubuntu interfaces so one interface is “mapped” to another?

I have recently setup a DHCP-Server on an Ubuntu 10.04 server machine. The machine has two interfaces (eth0, eth1). I have the DHCP server setup correctly because computers connecting to the network ...
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1answer
68 views

Setting Windows Server 2003 DHCP

I have a Windows server 2003 with two NIC one is setup to connect to the network with static IP/internet, and the other one is supposed to be used internally as DHCP server. However I am having ...
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1answer
503 views

Is it possible to make ISC dhcpd (IPv6) 4.2.2 unicast-only?

I ask because the server is handling DHCPv6 for two VLANs and I can see some requests both via DHCPv6-relay from our ProCurve switch and via the ff02::0:2 anycast address and responds to both ...
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1answer
757 views

dhcp-server + iptables: Can't share ppp internet connection

I had this configuration before, and it used to work well, but now I got a new server and I can't setup it to share the internet connection from ppp0. I'm on Debian testing. The client connects ...
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2answers
402 views

Ubuntu server as DHCP Server and Internet Gateway

In my work environment there is one ubuntu server (dynamic ip) and 6 win7 systems all connected to a switch which is connected to a modem(isp internet). Right now the modem acts as dhcp server and ...
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2answers
264 views

Questions on DHCP server setup

I'm fairly new to networking of this so I have a lot of questions... any help is appreciated. I'm setting up a DHCP server and I've run into a few problems... Here is my current setup: Router IP: ...
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1answer
1k views

How to configure vlans with server 2003 DHCP

How do you configure Server 2003 to handle vlans? I believe I need to use the IP Helper in DHCP, but am unsure and am unable to find a decent tutorial or guide on doing this. Can someone help me or ...
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1answer
307 views

Linux DHCP Server - Interface Association

I have a question about the dhcp server on linux Basically my server has 2 interface cards eth0 : 192.168.2.201/255.255.255.0 eth1 : 192.168.4.1/255.255.255.0 eth1:0 : 10.1.1.0/24 On this server ...
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1answer
149 views

Enterprise DHCP server solution? [closed]

I have a network of about 1000 assorted devices, all of witch are running by static IP addressing. Given the size of the network and the lapse of technical advice, the addressing scheme is in chaos ...
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1answer
114 views

DHCP messages in LAN [closed]

I run a Mac and release/renew my IP with: sudo ipconfig set en0 DHCP In wireshark I get the following with udp.port==67 as filter: Why are the messages sent from my computer broadcasted, but ...
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1answer
2k views

Windows Server 2012 AD DC/DNS/DHCP in single server

I have to say I am not a system admin but I had to setup the development environment in my company and I ran into many issues and after searching for many hours I hope somebody can help me out here! ...
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1answer
27 views

XenServer 6.2 DHCP Setup

I have a XenServer 6.2 running on a dedicated OVH Server. For this dedicated server I have 2 additional IP blocks. Whenever I setup a new VM (mostly CentOS 6.6) i have to skip the network ...
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2answers
64 views

how to get a connection between Windows and Linux without an existing DHCP server

Scenario: In general a ubuntu machine (called server) runs in a network and gets an IP from it. Due to testing, sometimes a windows machine (client) is physical connected to the ubuntu machine ...
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1answer
193 views

Cisco Router not displaying DHCP client hostnames

I've got a branch office configured to issue IP address from a Cisco Router (IOS 15.0). The router is successfully issuing DHCP addresses just fine. My questions is that when I issue the command "sh ...
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votes
1answer
103 views

Create separate Network for testing purpose [closed]

I have installed Windows Server 2012 on a VM (ESXi) for testing/learning purpose and I also like to install DHCP Server as well but this will conflict with my ISP router and I don't want to disable ...
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3answers
194 views

Temporary DHCP Static Leases [closed]

I want to set up a DHCP server that gives out semi-static leases. Allow me to explain. I want the server to give out static leases (I think these are also referred to as "sticky" leases) to users, ...
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2answers
2k views

Using Windows Server 2008 R2 and PfSense [closed]

Hey I want to setup my personal home network so that R2 is dishing out DHCP and currently my PfSense box is doing this for me. my setup is motorola surfboard to PfSense to switch. How do I configure ...
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0answers
34 views

detect DHCP server on a wired network [migrated]

On Windows 7, how can I check if there is a DHCP server ruling the LAN on which my computer is running ? How to detect its IP address ? I would prefer a CMD command line, however other solutions are ...
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votes
0answers
20 views

DHCP Policy based on CalledStationID / SSID

Setup: Server 2012R2 Server1: DNS, DHCP, NPS WLAN-Acces point configured as radius-client with two SSIDs 1 DHCP-Scope (lets say 192.168.0.1/22) SSID1-users should be assigned to DHCP-Subscope1 (lets ...
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votes
1answer
109 views

Access Control Lists & DHCP

Please take a look at this image right here. In the image above you can see a virtual netwerk simulation program (CISCO Packet Tracer 6.0) where I'm trying to setup a network and secure it. However ...
-1
votes
1answer
136 views

Get/Assign IP addresses assigned by the DHCP sever with DLink switches in between

In our office the setup is like we have a UBUNTU server with DHCP Server connected to all the PCS via 24 port and 8 port DLink switches. How can I find all the PCS(with client name, ip and mac ...
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3answers
4k views

Windows 2008 R2 DHCP for two scope on two interfaces

I'm setting up a brand new DHCP Server over Windows 2008 R2 Standard edition server, and I'm planning to serv two differents lan with this one. Here is my configuration: 1 AD/DNS/DHCP Server with ...
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3answers
208 views

No route to host after changing interface to static ip [closed]

I installed a Linux (Ubuntu) server inside my home LAN, initially it's automatically configured to use DHCP interface. I'm connecting to this server from another computer using that server's hostname. ...
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votes
1answer
76 views

domain-search value on my clients computer [closed]

I need help with configure my DNS and DHCP server - I have spent some time searching on google but have not got any informations regarding my problem. I have an Ubuntu 12.04 server running and use ...
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votes
1answer
14 views

DHCP server with 2 NICd

I have windows 2012 r2 x64 standard server. That server has 2 NIC nic1 gather IP from LAN1 nic2 - here i need run dhcp for LAN2 (black network) This server will have firewall which will be use ...
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votes
3answers
275 views

How to get machines to use a DNS without a fixed IP, which does not appear in the DHCP lease? [closed]

I have some machines on a network. This network has a DHCP server - which I have no control over, and no DNS server, i.e. the DHCP lease refer you to some ISP's server and do not serve IPs for local ...
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votes
2answers
74 views

How to force the network machines to get the ip from a DHCP server? [closed]

How can I force all the network machines to get the IP from the DHCP server and prevent them from manually editing the network configuration. There are both Linux and Windows machines. The DHCP server ...
-4
votes
1answer
107 views

DHCP IPV6 Environment [duplicate]

Possible Duplicate: DHCP IPV6 Environment in DHCPV4 for discover, request we mention the source ip as 0.0.0.0,what it could be the in DHCPv6.Similarly we mention the multicast address as ...