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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4
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6answers
2k views

user friendly name for ip address on home network

How can I set up some sort of local DNS service, so that instead of using ipaddresses to do things like VNC and remote desktop a more URL like thing can be used. All the devices on a network have a ...
1
vote
1answer
619 views

DHCP negotiations consistently fails to obtain lease on first try and works on second try

I'm having some problems bringing up my wireless card at boot time on my Red Hat Linux 9.0 box. After some investigation with the boot scripts, I noticed that it was having problems with the DHCP ...
2
votes
3answers
6k views

Could not find DHCP daemon to get information on Belkin G Wifi Router

I am using a Belkin G Wireless Router F5D7234, and i have a DSL connection with only a ethernet cable. So i connected the cable to the Modem port and allowed it to use Dyanmic IP, it worked ...
1
vote
1answer
518 views

Blacklist a DNS server supplied via DHCP

The DHCP server on a network I use specifies a DNS server that I do not want to use. Is there a way to continue to use DHCP but to modify the provided information or to "blacklist" one (of the three ...
1
vote
2answers
1k 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
1
vote
1answer
3k views

fedora, dhcpd fails to start

History: I got a tiny shiny plugserver which I want to plug to my ADSL router (or however you want to call it) on one end (eth0), and the other end (eth1) I want to run a dhcp server for my LAN. ATM I ...
0
votes
1answer
486 views

DHCP server inside a virtual machine can't see other machines

I setup a private network from virtual machines and one of the machines is the DHCP server for the group. I want to specify a next-server for the DHCP server but I'm having trouble connecting to any ...
1
vote
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 ...
11
votes
1answer
9k views

Windows clients not using NTP server provided via DHCP

I have a network consisting mostly of Windows Vista and 7 clients and an Ubuntu server. The server provides both the DHCP and NTP services through dhcp3-server and openntpd. In my dhcpd.conf, the ...
3
votes
2answers
1k views

What are ping packets made of?

What exactly are in the packets that are sent via the ping command? I was reading a Wikipedia article about magic numbers and saw this: DHCP packets use a "magic cookie" value of '63 82 53 63' ...
0
votes
1answer
447 views

Use dns suffixes only on certain wireless networks?

quick question. I'm a software guy and networking is all black magic to me! I have a laptop which I use at home and at the office. In order to be able to more easily reference our servers at work, I ...
1
vote
3answers
7k 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 ...
2
votes
4answers
2k views

Linux - use dhcp again to get IP

I had statically set my ip in Linux using: sudo ifconfig eth0 192.168.blah.blah Now I want it to go back to using DHCP to assign the IP. How do I do that? This is what I see when I run dhclient ...
3
votes
3answers
4k views

LinkSys router suddenly cannot get an IP address

I have a linksys router WRT54G2 connected to a cable broadband. Just last week, everything was working perfectly - I would be able to connect my laptop to the internet using WiFi. However, starting ...
1
vote
2answers
851 views

Is there a better way to get dd-wrt to ignore my ISP's 3rd DNS server?

My ISP's DHCP server specifies 3 DNS servers that provide ads on mistyped domain names. I'm using a third party DNS provider that only has 2 DNS servers, but unless I put something in the third box ...
1
vote
4answers
631 views

MacBook Pro with OSX 10.6.3 (Snow Leopard) Wi-Fi network connection breaks after few minutes

I have a MacBook Pro with OSX 10.6.3 (Snow Leopard). After connecting on a Wi-Fi network, the connection "breaks" after a few minutes. What I mean by "breaking" is that all requests, whether it is ...
0
votes
2answers
2k views

dhcp status in linux [closed]

How to find in linux(fedora12) if dhcp is running on network?
1
vote
2answers
475 views

Dhcpd Daemon is trying to lease itself?

I have a Slackware Linux 13.0 box with two interfaces, eth0 and eth1. I have set this box up to be on the 192.168.1.0/24 network, with subnet mask of 255.255.255.0. I am trying to run a dhcpd server ...
2
votes
1answer
648 views

How to set the hostname according to the DNS name on Ubuntu 9.10?

Motivation I have to manage a lot of virtual machines that I create by copying a template (VmWare image). Problem Now I have the problem that in the template the file /etc/hostname contains a given ...
3
votes
2answers
715 views

How to set up DHCP-configured access through a Linux box?

I would like an old desktop box to use my laptop as a router to access the internet. Here is my setup: I have one ethernet port in the side of my laptop which I want to use to get internet access ...
4
votes
1answer
2k views

Configuring default gateway returned by dhcp server

I have a machine which connects via ethernet to a private LAN, and wireless to a network which provides internet connectivity. The private LAN uses a wireless router to perform DHCP. The problem is ...
2
votes
1answer
454 views

How do I add wireless-router to existing VPN-router>DHCP-server network?

Our office just acquired a Cisco/Linksys RVL200 VPN Router for use as our primary router. We handle DHCP serving via dhcpd on a Debian server. I want to enable wireless access to our network. We have ...
2
votes
3answers
136 views

Does exists a software that act as DHCP service?

I need to configure a network made by a simple old hub with 24-ports a server and some clients. Both clients and server has Windows XP or later. If all clients has the DCHP service enabled does ...
1
vote
1answer
397 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 ...
2
votes
2answers
441 views

Connect to host by name using a Linksys wrt54g as my router and dhcp server

I have a Linksys WRT54G router at my house. How do I enable/perform connect-by-name on my network (like "kitchen" and "musicbox") on Windows XP, Linux (Ubuntu and CentOS), and Mac clients? Sometimes ...
0
votes
2answers
2k views

IP addresses not updating, but showing correctly in the DHCP Address Leases

I first noticed this when I tried a RDP to wxp-38-shop and it connected me to the computer wxp-alvinm As you can see in the picture I pinged wxp-38-shop and it shows a different IP then whats given ...
2
votes
1answer
106 views

Forward ports to the same computer even when the IP changes due to DHCP with D-link wireless router

I have a PC connected directly to a wireless router D-LINK WBR-1310, and I use port forwarding to that PC so I can connect to it via SSH remotely. However, I use the built in DHCP to manage IP ...
9
votes
2answers
8k views

DD-WRT: DNSMasq expand-hosts not working

I have a Linksys router running DD-WRT (Firmware: DD-WRT v24-sp2 (09/08/09) mini). I have it successfully resolving the DNS names for my DHCP-assigned systems, but only when I fully-qualify those ...
1
vote
3answers
3k views

Computer cannot get DHCP address and if assigned valid static IP it still can't use network

The computer (HP laptop, Vista 64bit Home Premium SP1) had/has viruses. To remove viruses, I took out drive and hooked up to another computer and used 2 different scanners to remove viruses. I then ...
16
votes
10answers
68k views

How can I add additional search domains to the resolv.conf created by dhclient in CentOS

When my CentOS virtual machine boots it uses DHCP to get an IP address. It also overwrites resolv.conf with the DNS settings provided by the DHCP server. The DHCP server doesn't supply any search ...
8
votes
4answers
1k views

Does a router know not to hand out static IP addresses to other devices?

I set a computer on my network to use a Static IP address Shutdown the computer so its not on and not connected to the network Question: How does my router know not to hand out that IP address to ...
0
votes
1answer
1k views

DHCP not working after NetBIOS over TCP/IP disabled

I want to disable the "NetBIOS over TCP/IP" device in the device manager to free port 445. But after doing that my Internet stops working. I'm connected to a WLan router using DHCP on WinXP, and it is ...
1
vote
2answers
172 views

VMware with bridged network and DHCPs

In our office we use VMware for almost everything. Our host machine is pretty empty and we just use it to run the Workstation. From time to time we copy one machine to other coworker and then we have ...
2
votes
1answer
569 views

NIC card using strange IP address

I'm using Windows Vista on a laptop, and while my wireless card works fine and takes the address the wireless router's DHCP server gives it, for some reason when I plug my (built-in) laptop NIC port ...
2
votes
2answers
794 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 ...
1
vote
2answers
189 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 ...
1
vote
2answers
128 views

Internet connection issue

For some reason this laptop doesn't want to stay connected to the Internet. I have to restart the DHCP client service every time to fix the connection problem. I didn't have to usually do this. I'm ...
2
votes
2answers
297 views

DNS / DHCP Issues

I just got back from a site visit where I had to use a fixed IP, gateway, and DNS address. When off the main network there, I used a USB 3G modem with no problem, but as soon as I got home, I could ...
1
vote
1answer
881 views

Fixed dhcp ipv6 lease with windows seven?

Here is my setup: my isp provides me with a /64 ipv6 adress (a real one, not through an ipv4 tunnel or whatever) in addition to my ipv4 my router provides the ip with dhcp over my home network. I ...
4
votes
8answers
9k views

How can I change my public IP address?

I'm looking for a way to change my public IP address. You know, the one that other websites see. I know what I'm looking for is basically a proxy server, but I don't want to use a proxy for 2 ...
0
votes
2answers
8k views

Why is my Iomega StorCenter Not Recognized Using port 8888 — Airport Extreme Configuration?

Problem I have an Iomega StorCenter ix2-200d, but I think this question would apply to the Iomega StorCenter products in general as I am at the very begining of the setup process. Environment The ...
1
vote
1answer
1k views

Connect Ethernet Device Directly to Tablet PC Running Windows

I have an Ethernet device that I need to connect directly to a mobile tablet computer. (The device contains some sort of embedded Linux that supports DHCP.) Is there any way to set up some kind of ...
22
votes
4answers
60k views

Release/renew IP address via Terminal in OS X

I am looking to release and renew my IP address in OS X 10.4 (Tiger) using Terminal. Essentially, I need the OS X equivalent of Windows': C:\\> ipconfig /release C:\\> ipconfig /renew ...
3
votes
3answers
2k views

Can DHCP provide DNS addresses when IP is static?

In Windows, when I select static IP (instead of DHCP-assigned one) I have to enter the IP address for DNS servers. Is there a way to manually set IP address yet obtain the DNS addresses from the DHCP ...
1
vote
4answers
2k views

How access network computers by name

I have a local home network. The computers get IP address from a router via DHCP. So the address are dynamic and change. How can I assign names to computers to be able refer by name? One computer is ...
2
votes
5answers
5k views

Windows 7 Default Gateway problem

I have a strange problem (or at least seems strange to me) the below are IP configurations for two laptops on my home network which consists of a main router 192.168.11.1 and a connected wireless ...
0
votes
3answers
4k views

How to configure DHCP for a wifi access point in front of a DSL router

What's the general procedure for adding a wifi access point to a DSL modem connection. That is, I've got DSL router -> Desktop computer and I want to get to DSL router -> Wireless router ...
3
votes
1answer
603 views

OS X location aware networking

I have a macbook running OS X 10.6.2. I would like to be able to use DHCP when roaming, but automatically switch to a static IP when my macbook is in range of my home router. Right now I must manually ...
2
votes
3answers
504 views

My Very Own DHCP Server

My home network is as follows: Cable modem for internet, connected to a wireless router, multiple clients connected over the wireless network. My wireless router has a builtin DHCP server that assigns ...
2
votes
9answers
25k 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 ...