DHCP - Stopped working after patching 2003 Server

Hello,

We have a number of 2003 Domain Controllers deployed at various sites. They
are currently 2003 SP1. We have just patched one of them to test before
attempting the others. These servers are all built identically with same
configuration (except root DC's). They also had the SCF run after initial
configuration and DCPROMO.

DHCP has stopped working on this server since the patches were applied. If
we turn off Windows Firewall then it works again. We have enabled ports 67,
68 and various others that have been recommended but still DHCP will not work.

We are reluctant to patch rest of the servers or expand the infrastructure
before resolving this issue. Whilst the windows firewall is on the private
side of the network the office 2 office comms are via VPN so we would like to
use Windows Firewall if possible for added protection. These are not
"private, leased" circuits.

If you can shed any light on this it would be appreciated. We have gone
through the updates but none of the descriptions seem to have anything to do
with DHCP and without de-installing them 1 by 1 we have no way of telling. At
the end of the day we will need which ever patch to be applied in future so
we would think it better to resolve it via slackening the firewall off
instead of removing the patch.
--
Thanks

Jamie

This may be RPC related - see:

http://support.microsoft.com/kb/154596/

The number of ports you need to open on a local network connection to a DC,
even without DHCP, makes the use of this kind of firewall questionable:

http://support.microsoft.com/default...b;en-us;179442

Doug Sherman
MCSE, MCSA, MCP+I, MVP

"Jamie" <(E-Mail Removed)> wrote in message
news:3F60F895-6694-4756-A741-(E-Mail Removed)...
> Hello,
>
> We have a number of 2003 Domain Controllers deployed at various sites.
They
> are currently 2003 SP1. We have just patched one of them to test before
> attempting the others. These servers are all built identically with same
> configuration (except root DC's). They also had the SCF run after initial
> configuration and DCPROMO.
>
> DHCP has stopped working on this server since the patches were applied. If
> we turn off Windows Firewall then it works again. We have enabled ports
67,
> 68 and various others that have been recommended but still DHCP will not
work.
>
> We are reluctant to patch rest of the servers or expand the infrastructure
> before resolving this issue. Whilst the windows firewall is on the private
> side of the network the office 2 office comms are via VPN so we would like
to
> use Windows Firewall if possible for added protection. These are not
> "private, leased" circuits.
>
> If you can shed any light on this it would be appreciated. We have gone
> through the updates but none of the descriptions seem to have anything to
do
> with DHCP and without de-installing them 1 by 1 we have no way of telling.
At
> the end of the day we will need which ever patch to be applied in future
so
> we would think it better to resolve it via slackening the firewall off
> instead of removing the patch.
> --
> Thanks
>
> Jamie