Questions tagged [dhcp]
DHCP stands for Dynamic Host Configuration Protocol and is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol.
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Remote traffic capture probe
Background: I'm a sysadmin at a relatively large university (about 15,000 users in residential space/ResNet). While my group is responsible for administering ResNet space (authentication, DHCP, etc.) ...
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Configuring wireless network with multiple AP's
I have my primary router running ubuntu, which has been working fine for my basically very tiny large-scale setup (if that makes any sense at all). I got a handful of extra soho routers which I ...
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Pinging DHCP clients by name
The office has a small LAN, composed by a Linksys WRT54G2 sharing a DSL connection, a hub, and several wired and wireless clients. DHCP is enabled in the Linksys.
The DHCP clients table shows the ...
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How to register hostname via DHCP?
I am a software developer and I am working on the develpoment of a network device (SIP phone). When it boots up, I want it to register a domain name on our network so that a customer can easily ...
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How do I get Windows Server 2003 DHCP to hand out my newly-expanded Subnet Mask?
I have a need to have lots of internal SSL sites, so I need lots of internal IPs. With some helpful advice here on this site, I learned I can change my subnet mask to raise the limit of hosts that I ...
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How does 3G/Mobile phones get allocated an IP address? Does this mess with Google Analytics? [duplicate]
This question is in two parts.
Q1.
How does a mobile phone get an IP address over 3G? Like, would it get the same IP for a shortish period of time (Eg. 1 day, etc)? Because my phone is constantly ...
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Is there an equivalent to "netsh dhcp" on Linux / BSD
I have a DHCP server running on Windows 2003 Server. I'd like to query the lease database to find details on a lease for a specific IP. How do I do this remotely from Linux?
There is this command on ...
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Add IP address to lease list on SBS 2003
I've deleted an IP address by mistake from the DHCP Address Leases list on Small Business Server. Is there a way to get these back or restore them? I've tried, but to no avail.
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To set up DHCP in OSX
How can you set up a DHCP for OSX such that you can access your Macbook's shared network by iPod Touch?
I have enabled internet sharing in OSX settings
such that you I access the sharing by iPod.
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Ubuntu issues with IP
I'm having a really odd issue where ifconfig and my /etc/network/interfaces disagree.
I have /etc/network/interfaces configured so eth0 has a static IP of 192.168.2.5; however, ifconfig says eth0's IP ...
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Where does Slackware's DHCP client store lease information?
This is a followup to this question.
I eventually got my hands on a Slackware 12.1 machine with a dynamically-assigned IP address. It turns out it uses neither dhclient nor pump to get the address, ...
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Find out the DNS server for a DHCP connection in Linux
I know they're defined in /etc/resolv.conf, but what if it's not there? And more specifically, how do you find the DNS server returned by DHCP?
In GNOME you can use the NetworkManager applet to see ...
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DHCP / PXE Diagnosing - Is there a wget/wfetch for DHCP?
I am having a few problems with a DHCP / PXE environment, I think I know what the problem is but I really just want to see what the server is getting back.
I love tools like Wget and Wfetch for ...
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Setting up a Secondary DHCP Server, for failover [duplicate]
Possible Duplicate:
Can I have multiple DHCP servers on one network?
Current Environment:
Windows Server 2003 (Primary Domain Controller)
Primary DHCP
Active Directory
Print Server
Exchange 2003
...
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Distribution-independent way of testing if an interface's current IP was obtained via DHCP?
Firstly, parsing configuration files isn't really correct. And not nearly distro-independent either.
My first idea was to search for running dhclient processes, but each distribution uses a different ...
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Firebox issuing incorrect DNS server over DHCP
I have had a Watchguard Firebox x55e since May w/o any issues. Upgraded to their new version 11 OS last Friday.
We have two DNS servers specified for the external interface and have it handling DHCP.
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VLAN Network Implementation problem :(
Having trouble with my network implementation for my office
Hardware:
n port switch
one server (debian based) (internet Gateway)
x amount of access points
y amount of desktops
I want to segment ...
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Make Windows Server 2003 DHCP exclude a certain MAC
how can i refuse to assign an IP to a certain mac-address? or the other way round: how can i let the DHCP-server assign an IP only to some very special mac-addresses?
i'm running two DHCP-servers on ...
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How to install DHCP server on FreeBSD 7.2?
I have a clean install of FreeBSD 7.2-RELEASE. I want to install a simple DHCP server for a few windows computers. But, unfortunately, following don't work:
pkg_add -r isc-dhcp3-server
Error is: "...
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Is there any way to prevent DHCP server conflicts?
When I ordered the internet connection for work, they threw on a "bonus" router. It's a a 2wire gateway "every service we can cram in a box" type of thing. This is not what I preferred to work with, ...
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Windows 7 does not respect the prefered router order from DHCP
We have been using Microsoft's DHCP server on our domain for years with success. One of the options we are pushing to the client is the default gateway. In the Scope Options dialog it reads:
003 ...
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How do I set up a LAN-wide DNS server?
I'm familiar with the trick of of editing the /etc/hosts file to direct your computer's traffic to specific IP addresses. Now, I'm looking for a LAN-wide solution. Of course, I could edit all of the ...
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Why do I have to DisableDHCPMediaSense in some WinXP clients for Group Policies to apply correctly?
This problem appears to apply to multiple XP clients connected to a 3Com Baseline2948 Gigabit switch. The clients don't share a common network card, some are Intel based, others nVidia. All clients ...
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ISA 2006 refuses VPN DHCP requests as spoofing
I'm running ISA 2006 with PPTP VPN for my AD-controlled network. DHCP is located on the ISA server itself and authentication is done by RADIUS (NPS) located on the DC.
Right now my VPN clients can ...
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Looking for an all-in-one Network Security solution [closed]
At my company, we are currently using TradeShield / iShield as our gateway to the internet. It is also our DHCP server, content filter, and internet usage monitor. However, I find that the software ...
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D-link DAP-1353 n2 not giving IP address
I have a D-link DAP-1353 n2, I can connect to it fine, but I am not given an IP address. If I assign myself a static IP I can browse the network without any problems. Some other laptops are able to ...
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DNS servers not assigned by DHCP
I got working domain with DHCP, DNS servers installed and firewall ZyWall 5 which resolves names to internet. In DHCP server configuration I've set also static IP address of server as a primary DNS ...
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Recover from hosed server that was the sole DHCP Server
One of my Windows Server 2003 Domain Controller seems to have died this morning. This was the only DHCP server for this particular office. I have another DC in this office.
If I set up a new DHCP ...
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Howto setup Cobbler with PXE if you can't change the dhcp server?
In the past I've setup a PXE server several times by making the normal dhcp server return everything needed for network booting: both the regular ip config AND bootinfo in a single dhcp setup. That ...
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How can I run a DHCP server in a virtual machine using a shared network interface?
I am trying to run a dhcp server in a virtual machine using Parallels Desktop.
I have the dhcp server running in Ubuntu on a virtual machine, if I give the virtual machine its own network interface ...
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Dhcp context is missing from windows xp netsh
How can I add the dhcp context using netsh commands on Windows XP ?
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query 2003 dhcp leases
Can I query my windows 2003 dhcp server from my windows xp in order to get the ip address if i have the mac address or otherwise.
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DHCP lease information to file
Is there a command where I can convert the mac address column of the DHCP lease to txt file or CSV?
I am setting up mac filtering on a wireless controller but just want to use copy and paste instead ...
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How can I avoid Mac OS X temporarily setting its IP in the "link-local" range (169.254.x.x) at boot time?
I have a DNS and DHCP server (Linux machine) managing my LAN addresses and names.
Everything is configured and fully working once the clients are up and running, having every Mac OS X client a DHCP ...
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Which device should I use as DHCP server?
In our administrative building we have a network with around 150 workstations. Till now I used fixed IP address giving the specific department one range in same address.
Etc in marketing I had 192....
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How do I resolve a DHCP issue with a fon router?
I don't know how many people are familiar with fon (this is totally not a plug, because it basically doesn't work ever) but I've been using a WRT54G router from fon with the final fon firmware for 4 ...
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2DHCP servers on 1 network
I have 2 pfSense routers setup. one is DHCP for 172.16.2.x and one is DHCP for 172.16.1.x.
PC0 is 172.16.1.245 and I can ping PC0 from the (PC1) on the 172.16.2.x subnet.
PC1 is 172.16.2.245 but but ...
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PXE Boot - Linux server & OpenBSD client
I have an old machine here I'm trying to setup as a diskless client running OpenBSD, booting from my fedora 10 machine.
I've setup tftp and dhcp and both appear to be correct, yet the client just ...
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do cable modems log what ips they are assigned by the isp?
just out of curiosity. i've been looking at various modem manufacturers' websites and it seems clear that there are firewall logs and event logs but i don't know whether the event logs would cover the ...
amateurenthusiast
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DHCP in Windows 2003/2008 DC or in Router?
For a small Active Directory managed network (say 30-50 DHCP clients) should I have a domain controller (and then somehow another one as a failover) hand out IPs via DHCP or should I just let my ...
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DHCP server that can detect and handle rogue IP addresses
We have recently migrated to a Windows2003 DHCP server. Our network is a bit of a mess with a melange of static and dynamically assigned clients (unfortunately, some with incorrect subnet masks). ...
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How do I force Linux to reacquire a new IP address from the DHCP server?
The environment is Debian, although the answer will apply to all distributions.
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Configuring multi-homed Windows Vista/2008 machine to ignore default gateway and DNS server settings on one adapter?
I've got a Windows 2008 machine with two network adapters in it. One's connected to the corporate network, and the other's connected to a private (lab) network. They're both configured by DHCP. They ...
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DHCP failing to update DNS, no Active Directory
I have a DHCP and DNS server, running Windows 2003 SP1. I configure everything according to this Microsoft Technet article "Using DNS servers with DHCP", but it does not work. Note that the client is ...
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Disabling DHCP on SBS 2008?
All the information I can find on this issue tells me basically not to do it. Unfortunately, circumstances beyond my control dictate that I must find a way to have DHCP disabled and all SBS services ...
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Small Business Server with Hyper-V role despite it not being supported?
I know that adding the Hyper-V role to a Small Business Server 2008 installation is not supported as stated by Microsoft Support (KB 958829). I'm aware that I can use Virtual Server 2005 to host my ...
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Why am I getting duplicate DNS entries for same IP address?
I have a system (SYSTEMX) that is connected to our network through a VPN. Periodically the VPN gets disconnected and SYSTEMX loses its connection to the network. When this occurs I usually easily ...
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Safely deploying/hosting a virtualized domain containing a DHCP server
I originally asked this question on stack overflow and was referred here.
Using Hyper-V I built a private windows domain which is fenced off from our main network. Ultimately I want to provision this ...
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How can I set a search domain (and other resolv.conf parameters) in Ubuntu?
I like Ubuntu's NetworkManager -- it does a great job keeping track of all my WiFi parameters and passwords. However, when I actually plug in an Ethernet cable, the frustration begins.
When hooked up ...
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