[isalist] Re: (no subject)

  • From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
  • To: <isalist@xxxxxxxxxxxxx>
  • Date: Tue, 13 Mar 2007 06:34:04 -0700

http://support.microsoft.com/kb/841141 is the reference for ISA 2004/6
as a DHCP client to the ISP.

 

Yes, they can and often do employ MAC filtering.  I know for a fact that
Verizon does exactly that 'round there here parts, because they think it
helps them limit each connection to a single host.  Remember; these are
the same folks who think that there are "supportability" differences
between the client and server versions of Windows.  Good luck getting
"Bobby operator" to understand; much less answer the question of MAC
filtering, though.

 

If you can determine the MAC of the originally-connected device, use
that in your current machine configuration.  Otherwise, you're in for a
loooooooooooooooooooong day on the phone with a whole slew of
technically challenged people.

 

From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Glenn Johnston
Sent: Monday, March 12, 2007 10:03 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] (no subject)

 

 

 I also would like to know how they do it.

 

I have a cable internet service specifically designated as a 'HOME USE'
broadband service, at home, I use the 'HOME USE' service cause it's nice
and cheap.

 

Sure, Port 25 is blocked inbound, and only allowed to the ISP' SMTP
server outbound, 1723 inbound is blocked inbound, as is 80, 21, 110, and
probably a few other that I haven't found yet, but for home, it works
just fine.

 

I can plug this cable BB service into a LinkSys, D-Link, and Netgear BB
routers and they will get an address, the router do their NAT'ing
perfectly, and multiple devices can access the internet through the
single public IP just fine.

 

I can also plug the Cable modem directly into a WinXP Desktop or
Notebook and it will work Just fine.

 

But when I try to plug it into my play server, a Compaq Proliant DL380,
running SBS2003R2 Premium that  I have at home, It just don't get issued
with an IP address, from the cable modem. Plug it through the LinkSys
router, and it can access the internet just fine, but plug the Server
directly to the Cable Modem = No Public IP address issues by the ISP's
DHCP server.

 

This is repeatable, I can move the plug back and forth from the notebook
to the server, and the notebook wil repeatedly get the same public IP,
but the server times out, and ends up with a 169... private address.

 

For me. it's not really an issue, the server does not publish services,
and it only a play server anyway, but the ISP's obviously do something
very tricky & sneaky !

 

GJ

 

 

________________________________

From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Thor (Hammer of God)
Sent: Tuesday, 13 March 2007 15:32
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: ISA Server 2004/2006 & Verizon DSL Connection

Since when does the DCHPDiscover message contain OS infoz?  I'm not
aware of any mechanism that allows a DHCP server to identify the client
OS before assigning an address..  There are several methods to secure
DHCP assignment, but how exactly could Verizon identify the OS type?

 

t

 

        ----- Original Message ----- 

        From: John T (lists) <mailto:johnlist@xxxxxxxxxxxxxxxxxxx>  

        To: isalist@xxxxxxxxxxxxx 

        Sent: Monday, March 12, 2007 4:45 PM

        Subject: [isalist] Re: ISA Server 2004/2006 & Verizon DSL
Connection

         

        Your Verizon DSL service, being residential, may be configured
to only assign IPs to non-server OS. You might try reading your TOS with
them and it may mention this.

         

        John T

         

        -----Original Message-----
        From: isalist-bounce@xxxxxxxxxxxxx
[mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Tee Darling
        Sent: Monday, March 12, 2007 8:24 AM
        To: isalist@xxxxxxxxxxxxx
        Subject: [isalist] Re: ISA Server 2004/2006 & Verizon DSL
Connection

         

        It's residential. I don't know about MAC or NAT router (Linksys)
since I did not ask them that question. My only concern is how do I make
it work with ISA Server 2006 on a Windows 2003 server? 

        On 3/12/07, John T (lists) <johnlist@xxxxxxxxxxxxxxxxxxx> wrote:

        Is the Verizon DSL service residential or business?

         

        They said it only works with Windows Workstations, so does that
mean that it will not work with a MAC or with a firewall such as
Sonicwall or even a basic NAT router such as a Linksys?

         

        John T

         

        -----Original Message-----
        From: isalist-bounce@xxxxxxxxxxxxx
[mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Tee Darling
        Sent: Monday, March 12, 2007 7:32 AM 
        To: isalist@xxxxxxxxxxxxx
        Subject: [isalist] ISA Server 2004/2006 & Verizon DSL Connection

         

        ISA Gurus,
         Where are you guys hiding? I need your help out here :).
        Okay, here is my problem. I have a Windows Server 2003, XP, and
Vista network setup. I have a Verizon DSL that connects to my network.
When I connect the Verizon DSL  box (Westell Wirespeed) to any of my
workstations, I get a public DHCP assigned IP address from Verizon.
That's Great. Everything works fine. But when I connect the Verizon DSL
to my Windows Server 2003, the Verizon box is not able to assign the
Public IP address to the server. According to Verizon, their DSL box
only works with Windows workstations and not Windows servers. 
        
        My plan is to setup my network so that my Windows Server 2003
which has 2 NICS in it will have ISA Server 2004 or 2006 install on it.
Actually, I will install ISA Server 2006 since I have worked with the
2004 edition for over a year and a half now. One of the NIC will be
connected to the Internal LAN and the other NIC will be connected to the
Verizon Box. But since I cannot connect the Verizon box directly to the
2nd NIC because of the limitation that box has with Windows version of
the server, what are some of the connections work around? I even tried
to connect the 2nd NIC and the Verizon box to an unmanaged switch but
that was no good. 
        
        Anyone out there with a very good idea to help me make this
connection work? I really need the ISA Server in my environment. Thanks
all for any idea you may have.
        
        Tee

         


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