OS X :: How To Create A Network Dhcp
Nov 26, 2010
When we share internet connection through ad-hoc wireless network, each individual connecting to our network will be assigned with an unique IP Address and other required fields will be filled with proper data(Gateway and ..).
I used this feature to access my iPad through wifi, and had no intention of sharing an internet connection.
Now that I don't have an internet connection to share, my computer doesn't give any IP to my device, therefore my computer is unable to see my iPad on the network.
I also tried "Create network" feature of mac, but again, since IP addresses have been assigned by self, I'm not able to see my iPad on the network.
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May 8, 2008
Having trouble on my mac while trying to connect to the internet using the built in Ethernet.
It says under network: Built in Ethernet is currently active. Built in ethernet has a self assigned IP address and may not be able to connect to the internet.
I hit the IPv6 and/or DHCP and it locates a IP just not a router number. Is this what is stopping it from connecting? Please help as I have an AP test I would like to study for....
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Jun 7, 2006
I am a comitted Mac switcher trying to put my lovely new MacBook onto the office Windows network. I can connect to the office wireless network (WEP key etc) and the little radar Icon in the menu bar lights up. However, I cannot get the MacBook to obtain an IP address via DHCP. I just keep getting the default self assigned address (169.....).
However, when I connect to the network via a cable using the built in ethernet connector, I get the DHCP address just fine and everything works OK.Also, if I assign an IP address manually to the wireless card (checking it is a free address!) it accepts the settings but I cannot network, not even a basic ping of another machine on the local internal network (all our internal machines are using 10.0.0.x addresses and 255.255.255.0 sub net)The DHCP server is not in the wirless router but is a Windows server machine.This is driving me crazy. I have called Apple care and they just dont want to know because there is a Windows machine in the mix. I expected better from them,
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Nov 10, 2009
I've got another thing I wish to figure out. I wish to have my iMac and my mate's Asus eeePC netbook to both connect with one another in a network.
The whole main reason I wish is to share my iTunes music library. So he gets to be able to play the music.
Could I get a few links how to set it up for sharing folders, and for sharing music through iTunes.
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Jun 11, 2010
I have a friend that has an iMac (I have a Mac Pro so no Airport) and I couldn't get it to create a wireless network (he just got an iPad). When I turn Airpot on it see other wireless networks and will even join them so it's working. However when I try to create one it just says something like "Unable to create Wireless Network" and gives no reason or code as to why. I've tried with/without Password and auto/manual on different channels with the same (non) results. He has just passed phone support time and don't want to spend $49.95 for phone support (you can buy a wireless accesses point cheaper). Being a 24" it's a lot of trouble to lug to the Apple store also.
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Feb 3, 2012
i'm using a MacBook Pro and Ableton Live 8, for those familiar... I have to create an ad-hoc network to get some apps like Liine apps working with my other Apple devices. Liine has some very clear and simple videos, as some i saw on Youtube. The thing is, for some reason, i don't have the AirPort option in my settings. I downloaded AirPort Utility 6.0, but it doesn't find a network or i don't know what.
Info:
iPhone 4
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Jan 11, 2006
I have a MAC OS X 10.4.4 that is joined to a Windows2003 Active Directory, which has a logon script that automatically maps a network according to the user, at least this works for Windows PC. Can anyone give me some suggestions as to how to do this for a MAC? I know how to manually create a drive mapping, but I just don't know how to have it automatically create for each user that logs in to have their own user directory automatically mapped.
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Aug 13, 2010
Quick question for the AEBS pros out there.
I have a large multi-dwelling building that I have two 50 meg connections to. I have purchased two AEBS's (one for each side of the house) and I'm considering adding a third one for the upstairs. Currently, I just have them both creating a network for each of my 50 meg connections.
Would it be better for me to "expand" the network instead and just have one large network? Would it utilize the bandwidth of both of my connections or just continue to split up the one that I have it connected to that is "Creating" the network.
Also - any creative ways to mount the AEBS? Would it be too hot to put them in the attic?
Last question - has anyone found a way to somewhat regulate the bandwidth distribution? I will have about 45 people splitting the total bandwidth and I want to be sure that it can service everyone without certain people hogging it.
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Mar 13, 2012
I am teaching in a school and would like to know how to create a shared folder on the network that students can access from any computer on the network.
Info:
iMac, Mac OS X (10.5.8)
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Jun 21, 2012
I have an older Mac Mini (Mid 2007, Core 2 Duo) running Lion. I am trying to create a computer-to-computer network, but I keep getting the message "Connection Failed".Futhermore, in the window "Create computer-to-computer network" the pull-down for "Channel" is blank. I have successfully done this on other Macs. Is there some hardware limitation on this old of a Mac mini that won't allow this to be done I can't find anything stating this anywhere.
Info:Mac mini, Mac OS X (10.7.4)
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Aug 7, 2009
I begin uni next month and have been offered accommodation. My room won't have WiFi but will have a wired connection. I'm wondering, is it possible to - rather than connect my MacBook - connect the Time Capsule to this connection and create a wireless network? Also, is it simple to switch from one connection (my current WiFi at home) to another (the uni connection)? Finally, is it easy to switch from being connected via Ethernet to using WiFi (after initial backup for example)? The lack of WiFi would really be rubbish when I have an iPhone and Time Capsule.
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Jun 17, 2012
If I create a wireless network and then switch off my iMac and use it the next day I have to recreate the network. I have tried locking the network settting but it doesn't stay locked.
Info:
iMac (24-inch Early 2009), Mac OS X (10.7.4)
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Sep 8, 2014
When trying to create a new user in Server Application I've come across this message: "existing connection is not authenticated: password change denied".
1. Quit Server.app. Â
2. On the Open Directory Server, execute these Terminal commands:Â Â Â Â Â
sudo touch /var/db/openldap/migration/.rekerberize     sudo killall PasswordService Â
3. Open Server.app. but the message I'm given in the terminal is No such file or directory.
Why I don't have the folder structure needed for this?
Info:
Mac mini, OS X Mavericks (10.9.4)
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Oct 16, 2010
I've encountered the situation a few times while traveling where you have cable connection but no WiFi. Since I now travel only with iPhone and iPad (no laptop), can I just connect an old AirPort Express A1084 to the router and expect WiFi? If so does the now unused AirPort Express kept the configuration of my home network e.g. name and password?
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Feb 25, 2009
I have just recieved a Macbook Pro as a birthday gift! Along with it came Airport Express. We already have an imac that is connected to the internet via an ethernet cable using the broadband provider Virgin Media. Can I create a wireless network with airport express and my broadband or do I need some sort of upgrade or additional hardware?
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Jul 3, 2010
I have a Time Capsule providing a wireless network in my home. I would like use my Airport Express to create an additional network, and have it get its internet from one of the wired ethernet ports on the TC. Can you daisy chain them like that? I tried it and so far I haven't been able to get it to work.
Hopefully that makes sense. I'm not trying to set up a WDS with the TC and the Express, I'm trying to plug the Express into one of the ethernet connections on the TC so the Express can share that internet connection as a new, separate network (like what you would do if you had the Express in a hotel room, etc).
I have the Express set up to create a network, and my computer can connect to it, but the internet's not available for some reason. Should I expect this to be able to work?
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Dec 10, 2008
how to create a "shortcut" icon on the desktop that points and will open to a file share on a network server (Windows AD Server)? I can browse to the server and get to the folder, but i need to create an icon to make it easier for a user...
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Oct 31, 2009
When I make connection with my router I do not have internet, but I go to my network options and I click TCP/IP and then "renew DHCP-lease". The "Router" number change from 192.168.2.1 to 192.168.3.1, and then my internet works. But if I have to restart my mac for some reason, it jumps right back to 192.168.2.1, and i have to click "renew DHCP-lease" again. I have this on my both Macs (MacBook unibody allu, and MacBook white and also on my iPhone).
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Jun 29, 2005
I have a Mac OSX Server (10.4) connected to a switch with various Airport Express terminals around the place. Macs can connect to the network wirelessly (with 128 bit WEP) and WIRED totally fine... but when I try and connect a windows PC either using wireless or WIRED... an IP address isn't assigned. Windows just says "Limited or no connectivity"...
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Mar 8, 2007
The service shows running but will not give an IP address to Mac or PC. As the leases are running out on the machines they are not being renewed. I restarted the service and then the server. Then I reset the DHCP Client list.I turned on a computer lab so that they would all grab a new address.... none of them did. I logged on to a computer and told it to renew its DHCP address and nadda. If i assign a static ip they are fine
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Mar 29, 2012
I have recently purchased a USB Ethernet adapter so I can setup NAT on lion server that runs on a MacBook. I was shocked when it blew away my DHCP Config after I set up NAT, but I stuck with the scope it chose and added the correct DNS and gateway settings.Whenever I start DHCP now, the logs tell me the Config cannot be found, and it blows away all of my modifications to DHCP. On top of that, it won't hand out any addresses.If I stop DHCP, the system logs start telling me that "natpmpd" has started, and then it begins to hand out addresses. The problem with this is, I can't make any changes to the DHCP settings it uses, which means my clients are now getting the incorrect settings for the gateway and DNS.Also, when I modify the Scope with DHCP stopped, the logs tell me it cant update the subnet because it was not found.
Info:
MacBook, Mac OS X (10.7.3)
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Apr 14, 2012
I have setup OS X Lion server to act as the DHCP and DNS server for my local network. DHCP provides gateway address and the local DNS server address.  DNS is set to forward to my ISP DNS servers. 'A' records and 'PTR' records have been created for the various servers on the network and I am able to resolve the servers via dig by name and address. I can also access the internet without issue. DHCP is handing out IP addresses to Windows clients on the network but I am unable to locate the machines with DHCP addresses in DNS either by IP address or FQDN. The windows clients are able to access the internet without issue. Looking at the DNS log there does not appear to be anything recorded when the DHCP address is allocated. Is there something special that needs to be setup either in DHCP or DNS that will allow DHCP to record the host and address details in DNS?
Info:
Mac mini, Mac OS X (10.7.3)
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May 12, 2012
I own a MacMini Server in my home network with Lion Server installed. I configured the DNS Service with a primary zone, providing nameserver (MacMini) etc. Server Admin tool create also a reverse zone 0.0.0.10-in.addr.arpa (my IP Range is 10.0.0.I own also an Airport Extreme Base Station (4th Gen) acting as DSL Modem, DHCP and NAT and creating 2 Wireless networks (private and public network) and it's correctly set up for internet access... In AEBS settings the DNS Servers are 10.0.0.3 (MacMini) and 8.8.8.8...With these settings everyting works fine but all the devices (other Macs, windows PCs, etc.) cannot ping each other... The only machine they can ping is obviusly the MacMini because in the DNS settings i punt manually a machine (A) record...
My question is: is possible to setup Lion Server to dinamically update DNS records using AEBS DHCP entries and reservations ? If possibile i don't want to add all the record manually and I don't want use the AEBS only as an access point...
Info:Mac mini, Mac OS X (10.7.3), Media Center + TM Server
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Jan 9, 2011
I've recently purchased my first Mac (the new 13.3 inch air model). I seem to be having a bit of a problem with wireless networking, though. It seems that my Mac will reconnect to my wireless network perfectly after resuming from sleep mode just fine for a few days, but after those few days, it will mysteriously stop being able to get an IP address from the DHCP server (my wireless router). My PC is able to connect to the network just fine and always seems to be able to get a new address, but the Mac just loses the ability. I have found that the only way I can get the Mac to start grabbing an IP address from the router is by going into the router settings and changing the RIP mode to a value other than what it currently shows. I generally try to stay in RIP_2B mode, but I change it to some other random value whenever it stops connecting.
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Jul 6, 2010
We have some Education iMacs that I am having some problems with. XP can be fully up to date (except SP3) without any problems, they are connected to the domain, get an IP address, correctly sync time and process group policy settings at a computer level prior to the logon screen. All this is using the ethernet port (not wireless). As soon as SP3 is applied, they don't get a DHCP address until after login, therefore they don't sync time, process policies etc. If I uninstall SP3, back to working. I have reproduced this several times on different Macs (we have about 90 that are exhibiting this). Tried different version of bootcamp drivers.
If I reserve the address in DHCP, it doesn't make a difference. I seem to only have 2 options:
1. Manually enter an IP address in Windows (this is too time consuming)
2. Leave SP3 off (this means WSUS 3.0 SP2 won't work)
Is there a newer ethernet driver outside the bootcamp package?
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Apr 6, 2012
I am trying to get an older Macbook Pro running 10.5.1 online and it is not working. I'm currently using 3 other Macs on the WiFi network all running Snow Leopard, so I know that network works. I tried renewing the dhcp lease and I have it set to using dhcp and to configure ipv6 automatically, and there are 2 ip addresses under dns servers (I typed these in because they showed on my other MBP). I can't even upgrade the MBP because I have no ethernet cable and can't plug it in to update it. I can do to get it to work?Â
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Jul 28, 2009
I recently got a white macbook while i am deployed in iraq, and our wireless signal here kinda blows, but at least it works. The only issue i have, seems to be that when i am connected to an access point, my macbook will randomly loose signal, and i end up having to go into the airport preferences, change from DHCP to BOOTp, and it will refresh, then come back on. If it looses signal again, i just change it back to DHCP, and then it works again.
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May 14, 2012
Ever since I upgraded to 10.7.3, my mid-2010 cannot connect to to internet via Ethernet any more (wireless works fine).Â
Basically, the Network utility GUI shows that a correct IP address has been assigned via DHCP, but I get no internet.Â
If I now check the output of 'ifconfig', I see 'en0' having a local IP address assigned, i.e. 192.168.1.1 or similar.Â
Seems like a software bug of some sort. Is it getting fixed in 10.7.4?
Info:
MacBook Pro, Mac OS X (10.7.3)
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May 4, 2010
I have an additional question about the Airport Express. I am interested in buying one but don't want to commit until I get a few questions answered.
1. I own a D-link wired router and a d-link wireless router. I have been tempted to buy the express, hook it into my wired router and run wireless off of the apple. I want the express so I can run itunes on my stereo from anywhere in the house.
Would there be any advantages to me using the wireless router in conjunction with the airport express instead?2. I am interested in the DHCP comments from above. If I turn off DHCP on the airport express then any friends who come over to use the wireless internet will need to be personally configured. Could I just assign the Airport Express a static IP address on the wired router, keep a DHCP on on the express for my friends and turn off DHCP on the wired router?
3. I have a PS3. I don't want to slow my gaming speed down. I intend on plugging the PS3 into my existing router (wired or wireless router, I will have it wired though) Will daisy chaining the express off of the router slow down my PS3 connection when other users are not using it?
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Feb 1, 2012
I want to create a disk image of a Mac drive (.dmg file).I figured that it might not be a good idea to try and image a live disk, so I unmounted it (the user dragged the disk icon to the eject icon), and I confirmed it was unmounted by looking at /Volumes. To be clear here, this isn't the boot volume, that is /dev/disk0./dev/disk1 is an internal drive - as it happens it's the original drive for this OSX 10.4 G5, AND /Volumes/HITACHI is the mount point for an external USB drive.I have tried this twice.On both occassions, things seemed to go well, but after a few minutes (about 10 - 20 minutes), I observed that the target file on /Volumes/HITACHI stopped growing, then a bunch of unpleasant stuff started to happen:
* I did lsof /Volumes/HITACHI/MacHD_20120201.dmg and found the PID of the diskimage binary, ps waux showed it was doing nothing (CPU% was 0.0). This indicates a stuck process to me.
* The hdutil command stopped producing '.'
* I could not cancel the hduitl command
* I could not rm the MacHD_20120201.dmg file
* I could not ls the /Volumes/HITACHI directory
* unlink also hung
A little further into this, the Mac became unresponsive. I observed that the disk was now mounted again (grrr!). As a work around I switched the USB drive off and on, and Mac came good - all my terminals started to respond, the GUI responded for the user.My workaround has been to use CCC to make a clone of the disk - but I don't like this because I think .dmg files are much more convenient (for a start, now that I've used CCC I can't use the USB drive for anything else).
* Is my methodology wrong? Do I really need to umount the /dev/disk1
* Can you disable finder from automounting an internal hard drive (I am particularly interested in this)Â
Info:
Mac Pro, Mac OS X (10.4.11)
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