Re: ISP Won't Turn Off DHCP

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

as well as other comments.

You're running a static IP on the external interface so the DHCP service is
binding to it as well as the internal.

You're in a bit of a catch 22 right? 'coz you can't adjust the binding
unless the service is running and as soon as you start the service it
detects the ISP's DHCP and shuts down.

EASY. Just unplug the cable to the ISP. Start DHCP. Go into the properties
for DHCP and unbind it from your external interface. Plug back into your ISP
and at a convenient time, restart normally to make sure all is well.

And do yourself and your company a favour. Throw a US$50 simple NAT router
between your external interface and the internet.

"Herb" <Herb@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:D5334DD4-897F-43F4-A3D2-2370084902F1@xxxxxxxxxxxxxxxx
> C:\Documents and Settings\Administrator>ipconfig /all
>
> Windows IP Configuration
>
> Host Name . . . . . . . . . . . . : igsvr1
> Primary Dns Suffix . . . . . . . : InsGuide.local
> Node Type . . . . . . . . . . . . : Unknown
> IP Routing Enabled. . . . . . . . : Yes
> WINS Proxy Enabled. . . . . . . . : Yes
> DNS Suffix Search List. . . . . . : InsGuide.local
>
> Ethernet adapter Server Local Area Connection:
>
> Connection-specific DNS Suffix . :
> Description . . . . . . . . . . . : Intel(R) PRO/100+ PCI Adapter
> Physical Address. . . . . . . . . : 00-90-27-86-09-75
> DHCP Enabled. . . . . . . . . . . : No
> IP Address. . . . . . . . . . . . : 192.168.1.120
> Subnet Mask . . . . . . . . . . . : 255.255.255.0
> Default Gateway . . . . . . . . . :
> DNS Servers . . . . . . . . . . . : 69.21.180.106
> Primary WINS Server . . . . . . . : 192.168.1.120
>
> Ethernet adapter Local Area Connection 2:
>
> Connection-specific DNS Suffix . :
> Description . . . . . . . . . . . : Linksys LNE100TX Fast Ethernet
> Adapter(LN
> E100TX v4)
> Physical Address. . . . . . . . . : 00-12-17-50-CD-75
> DHCP Enabled. . . . . . . . . . . : No
> IP Address. . . . . . . . . . . . : 69.21.180.106
> Subnet Mask . . . . . . . . . . . : 255.255.255.252
> Default Gateway . . . . . . . . . : 69.21.180.105
> DNS Servers . . . . . . . . . . . : 216.165.129.157
> 134.215.200.126
> NetBIOS over Tcpip. . . . . . . . : Disabled
>
> C:\Documents and Settings\Administrator>
>
> "Les Connor [SBS Community Member - SBS M" wrote:
>
>> You should be ok with two nics properly configured. If you post the
>> ipconfig
>> /all result that will help.
>>
>> --
>> Les Connor [SBS Community Member - SBS MVP]
>> -----------------------------------------------------------
>> SBS Rocks !
>>
>>
>> "Herb" <Herb@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
>> news:536F28C1-0D33-46FA-8D61-3F6CBCDB6C4E@xxxxxxxxxxxxxxxx
>> > The SBS server already has two nic's. One for the internal network and
>> > one
>> > for the external. It seems to me that there has to be a way to tell
>> > the
>> > external nic not to look for any DHCP servers on the external network.
>> >
>> > "Les Connor [SBS Community Member - SBS M" wrote:
>> >
>> >> Hi Herb,
>> >>
>> >> Somebody has to do something, and that somebody is going to have to be
>> >> the
>> >> site owner. The least expensive way is a second nic in the SBS, and
>> >> the
>> >> best
>> >> way is two_nics_and_a_router.
>> >>
>> >> --
>> >> Les Connor [SBS Community Member - SBS MVP]
>> >> -----------------------------------------------------------
>> >> SBS Rocks !
>> >>
>> >>
>> >> "Herb" <Herb@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
>> >> news:B4A80632-8962-43A1-9FCF-30A6F4D21DFF@xxxxxxxxxxxxxxxx
>> >> >I have just installed SBS2003. I have no device between the ISP
>> >> >router
>> >> >and
>> >> > the SBS Server. The ISP will not turn off DHCP server and the
>> >> > company
>> >> > does
>> >> > not want to install any additional hardware. I cannot keep DHCP
>> >> > server
>> >> > running on the SBS server because it finds the DHCP server from the
>> >> > ISP
>> >> > on
>> >> > start-up. How do I tell the SBS server to ignore the DHCP server
>> >> > from
>> >> > the
>> >> > ISP? I need help fast because this customer is 3 hours away and I'm
>> >> > on-site
>> >> > for only a little while. THANKS!!
>> >> > --
>> >> > Herb
>> >>
>> >>
>> >>
>>
>>
>>


.

Relevant Pages

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