RE: Problems with DHCP on external nework card
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 13 Mar 2003 19:35:32 -0600
Hi Steve,
But many cable systems don't support address renewal. When that happens, the
ISA Server ends up without an address, and must broadcast a DHCP Discover
message. The problem is that ISA Server doesn't allow broadcasts and therefore
the ISA Server is without an address unless you disable the firewall service,
issue the DHCP Discover broadcast, and then enabled the firewall service again.
Of course, its better to automate this, or even better, use a static address or
use the Sygate SOHO NAT server :-)
HTH,
Tom
Thomas W Shinder
www.isaserver.org/shinder
ISA Server and Beyond: http://tinyurl.com/1jq1
Configuring ISA Server: http://tinyurl.com/1llp
-----Original Message-----
From: Steve Moffat [mailto:steve@xxxxxxxxxxxxxxx]
Sent: Thursday, March 13, 2003 3:25 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Problems with DHCP on external nework card
http://www.ISAserver.org
Well you shouldn't be answering the question then........just enable the dhcp
filter within the isa mmc
Steve
-----Original Message-----
From: Glen Howard [mailto:ghoward@xxxxxxxx]
Sent: Thursday, March 13, 2003 1:00 PM
To: Isa List
Subject: [isalist] RE: Problems with DHCP on external nework card
http://www.ISAserver.org
It is HIGHLY recommended (per Shinder book p. 208-212) that your external
interface have static addressing.. I don't know of a scenario whereby ISA
SERVER can be programmed to change automatically..
You will have to change PACKET FILTERS, and published servers when this occurs..
Glen Howard II, MCP
Systems Administrator
"Let's talk about it later, Let's WORK on it Now!!"
-----Original Message-----
From: Jimmy Marklund [mailto:jimmy.marklund@xxxxxxxxxxxxxxx]
Sent: Thursday, March 13, 2003 6:43 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Problems with DHCP on external nework card
http://www.ISAserver.org
Hi!
I have a problem with my ISA server. I seem to loose the external ip adress,
wich is assigned by DHCP. If i stop all ISA services I receive an adress just
fine, but when ISA server is Activated I can`´connect to my ISP:s dhcp. What
have I missed?
Regards/
Jimmy¨
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