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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Telephone Server, Telephones, Printers, PCs & Servers on Individual VLAN's, DHCP clashing

Stuck at work tonight with a big issue. As a requirement for being taken over by a corporation we have been asked to stop using a firewall (juniper ssg-140) to separate our telephone system from the ...
2
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1answer
111 views

Reliable cross-platform way of determining hostname from IP address

Within the DHCP table of a router, clients that have sent their network name are listed with IP and MAC addresses. I need a way to get the host names that clients have sent. The router does not store ...
2
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0answers
48 views

Correct usage of Windows Server on network?

I have two routers, one with dhcp turned on and the other with it off. this is a functioning home network. Now, I am trying to integrate into it a windows server. Should the windows server be doing ...
2
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1answer
735 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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0answers
3k views

Windows 7 machine not pulling DHCP-issued address

Not sure where to go on this one. netsh winsock reset and netsh int ip reset did not help. If I set a static IP on the machine, it communicates fine. But it won't pull a DHCP address. Here's where ...
2
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0answers
148 views

How to only obtain information from DHCP server without applying it on Linux [duplicate]

If I do dhclient eth1, it obtains the information (IP address, router, DNS, etc.) and applies it to routing table, /etc/resolv.conf and so on. How to only get and print the information from DHCP ...
2
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2answers
639 views

Laptop kicks other users off the wifi when it connects, then gets disconnected itself

I've got an Acer Aspire One running Linux. When I connect to my building's wifi, everything seems fine for a short period of time (I can google a few things or start downloading an Apt package), but ...
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1answer
1k views

Two DHCP interfaces asigned to two default gateways to OS

I have a Ubuntu box that has two networking interfaces (eth0 and wlan0). They are both configured for DHCP in /etc/network/interfaces, but they both assign a default gateway: /etc/network/interfaces ...
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1answer
244 views

Change IP based on AP

I connect to 8 different Access Points, each with a separate subnet and each location does not allow DHCP. I want my computer to change my IP address to an assigned IP address per location based on ...
2
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1answer
647 views

dhclient overwriting resolv.conf

I'm setting up virtual dev environments and I want the hostname.domain to be something specific, eg- "barney.local". However my /etc/resolv.conf file keeps getting nuked because i'm using DHCP. I ...
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0answers
1k views

How do I configure Windows 7 to get its timezone from DHCP?

The DHCP protocol supports setting the time zone and the Windows DHCP Server implements this feature. The time zone on my company laptop (a member of a Windows domain) never changes when I connect to ...
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3answers
484 views

How do I PXE Boot Only when I want it to without user intervention?

I would like to setup a PXE environment where I can re-image machines remotely without any user intervention. Only problem is when the re-imaging is completed it will do the re-imaging again and again ...
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2answers
767 views

Ubuntu 8.04 server is not retaining a static IP address

I recently setup a linux box running Ubuntu 8.04 (to match another server with 8.04). I need to insure that this box has a static IP address and I changed /etc/network/interfaces to set up the static ...
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9answers
21k views

cannot renew ip unable to contact dhcp server

Hey all, I'm trying to switch up a home network from one computer (XP Service Pack 2) directly connected to via a modem to 2 computers (adding a Macbook) connecting through a router. The Macbook is ...
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3answers
11k views

How to assign multiple IP addresses to a single computer?

The dhcp ip range is 192.168.0.255/24. I wanted my computer to get multiple ip addresses from this dhcp. So I can have multiple connections through different ip addresses with just a single computer! ...
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3answers
116 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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3answers
3k views

DHCP Reservation vs Static IP address

So after browsing some websites, some people are telling me that static IP address is the best. But others say the DHCP Reservation is just as good if not the same. So what is better? Or are they ...
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3answers
7k 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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6answers
53k views

How to run a DHCP Server on Windows XP? [closed]

How can I create a DHCP server in a Windows XP environment?
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3answers
1k views

What does asterisk meant in route command

I have two network interfaces present in two different subnets and are configured as DHCP. When I run route command I am getting following output with asterisk in Gateway. What is the meaning of it? ...
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4answers
5k views

Mac OS X 10.5.8 gets wrong IP address from wireless router

My Mac OS X system is mostly getting the wrong ip address from any router. It gets an IP address starting with 169.254.59.233, when it should be getting a good, old 192.168.1.5 or something. Does ...
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1answer
735 views

Static DNS + DHCP-ed IP in Windows?

I change wifi networks a couple times a day. Obviously they have different DHCP settings, and I always use dynamic ip resolving. However, I want to have the same (say, OpenDNS') static nameservers in ...
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2answers
1k views

In OS X, how can I prepend 127.0.0.1 to the list of DNS servers obtained through DHCP?

I am trying to use dnsmasq to resolve certain known domains using its configuration, but let the rest of the requests go through to the normal DNS server assigned by DHCP. I cannot get this to work. ...
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1answer
4k views

How can I tell DD-WRT DHCP to assign same IP to the same device?

I installed DD-WRT mini image on my router. I have a board that gets rebooted a lot(development device). It is very frustrating that my board keeps getting different addresses every couple of reboots. ...
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2answers
5k views

How to disable disclosing a computer name to a network?

I don't use (I've disabled it by normal means and blocked the ports with personal a firewall) Windows Networking (CIFS aka NetBIOS aka SMB etc), but my PC has a name as it seems to be mandatory in ...
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5answers
560 views

Preventing other DHCP devices to distribute false IP addresses in a network

First of all, I'm no network administrator and have not much experience with networking, so if anything is unclear, please say so. In a dormitory, every room has 1 LAN port. Some people prefer to use ...
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4answers
6k views

IP Conflicts via DHCP on Home Network & Multiple Router Setup

I currently have a Netgear ADSL modem/router connected to the telephone master socket, which has DHCP enabled. I then have a wired connection to an Apple Time Capsule in Bridge Mode, which is a ...
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2answers
209 views

How can I know the DHCP settings offered by a server?

I want to debug a router that is giving strange DHCP settings, but I don't know how to check it without having to make my system take all the configurations. Isn't there a utility that returns all ...
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2answers
741 views

Automate static and DHCP switch

Is it possible to automate switching the DHCP and Static IP usage for a specified interface in Win7? I have an AP connected to an other and when the other AP goes offline it does not give my PC an ...
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1answer
93 views

Is there a reason to manually set an IP vs setting DHCP to assign a specific IP?

I'm running on a DDWRT'd (Linksys) router. I want to have static IPs on a few of my machines for port forwarding and tracing. I'm wondering if there are any benefits to one method over the other -- ...
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2answers
4k views

Change default DNS server in Arch Linux

I'm in Viet Nam and most social websites (Facebook, Twitter and the likes - even reddit) are blocked by the ISP DNS server. I tried to change the DNS server of my Arch box using the resolv.conf file, ...
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2answers
3k views

Can you manually assign IP address that is out of the DHCP range?

If I setup a router/modem to have DHCP range of 10.0.0.1 to 10.0.0.50, How do I manually assign one of the machines an IP address out of that range - eg. 10.0.0.51? I need to do this so that I can ...
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2answers
187 views

Can no longer reach DHCP server

I've read some of the other DHCP questions here, but my problem is a little different. I have a home laptop that has been working fine for ages. I brought my work laptop home at the weekend to finish ...
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2answers
4k views

How make static local ip for server on OS X, Airport Extreme

In my other question, I was trying to set up my mac as a server, and the thing they suggested after is setting it to a static local ip outside of the DHCP range so I could port forward to that and it ...
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2answers
38 views

Do my other local computers need a static IP when I use port forwarding?

If I change my main computer to static and port forward to get a server hosted, does that mean that I need to change the rest of the laptops and computer on the network to static to get them to ...
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1answer
27 views

Difference between configuring DHCP and starting service

On http://technet.microsoft.com/en-us/library/ee441263(v=ws.10).aspx, it says to configure and start DHCP on server core, do the following: At a command prompt, type: sc config dhcpserver start= ...
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2answers
109 views

DHCP server which only configures default gateway

I have static ip's assigned to my machines, but no default routes. I want to send only the default gateways via a dhcp server. Is that possible?
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1answer
5k 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
5k 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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2answers
5k views

Running two wireless networks, with two different DHCP ranges (Virgin Media superhub woes)

I'm trying to create two wireless networks in my house, that would provide the client devices different ip address ranges and DNS settings, depending on which network they connect to. My current ...
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2answers
3k views

Accesing internet with Host-Only network VirtualBox

I have two VMs in my VirtualBox. Both are FreeBSD and should communicate between each other. I have created network with DHCP enabled and set like this: Server Address 10.10.10.1 Server Mask ...
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4answers
5k views

Setting up Active directory on a home network

I'm trying to set up AD on my Windows Server 2008 R2. I think the IP assigned by my router should be static. So when I turn off the router's DHCP and enable the DHCP Server in Windows, do all my ...
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1answer
5k views

Unique IP address settings (static/dhcp) per wireless network? [duplicate]

Possible Duplicate: Automatically picking network settings based on the wifi network Is this possible in Windows 7? For example, I want to use Static IP A with Network A, DHCP with Network ...
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2answers
908 views

DHCP Lease time

I have computer connected to internet directly. But once every hour IP changes and I do not want that for sure. How can I set IP lease time for like a year or so? Thank you
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4answers
3k views

2 routers, both DHCP, no IP assigned

I can't get DHCP to assign IP to my wireless devices. My network config is as follows: Nanostation5 Linksys WRT350N, which is connected with Nanostation via its INTERNET port. Nanostation: LAN ...
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3answers
5k 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
362 views

Which protocol do most home routers use to get the names of the connected devices?

In most home routers, you can find a DHCP client table. Obviously the router knows the IP and MAC addresses of the connected computers. However, most of the time the router can list the computer names ...
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1answer
40 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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2answers
207 views

DHCP for USB virtual ethernet interface

I'm attempting to connect my Arietta G25 Debian ARM board to my home network using DHCP (or failing that, a static IP in the correct subnet). I'm currently using the board over USB, which shows up as ...
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1answer
75 views

Send files between two systems over LAN

I am able to send the files from one to another system connected on same router in a LAN. Now, I connected one more router to the first router to increase the range of wireless connectivity. When I ...