ISA in SBS2k Painfully Slow

From: Andy Nestor (ABNestor_at_bellsouth.net)
Date: 03/08/04 

Date: Mon, 8 Mar 2004 15:00:27 -0500

I just enabled the ISA Server on an SBS2K server this past weekend. This
upgrade also involved reconfiguring the network. Prior to the upgrade the
network was flat with the Default Gateway for all the computers being the
ISPs router and the SBS server had only one NIC enabled.

When I upgraded, I installed ISA Server, enabled the 2nd NIC and connected
it to the LAN port on the router. The 1st NIC (and all of the client
computers) is connected to a 10 Mbps hub. Basically it is the "Two NICs, a
static IP address, ISA, router" setup as recommended by SmallBizServer.net.
I did remember to update the Local Address Table. The internal network is
192.168.116.x/24 and the DMZ network is 192.168.1.x/24. I also installed
the firewall client and verified that IE was configured to use the proxy
server on all client computers.

When I left my client's office on Saturday, everything seemed to be working
fine (but then I was about the only one here). Today things seem to be
painfully slow. There also appear to be some problems with an application
that retrieves XML files from the internet.

I have also observed extremely high utilization spikes on the internal
network (on the hub). My client is very frustrated (and so am I).

Does anyone have any suggestions?

Andy Nestor

Relevant Pages

  • Re: ISA 2006 Basic Configuration
    ... Does the AD/DNS Server have the ISP's DNS properly configured as a Forwarder? ... Microsoft Internet Security & Acceleration Server: ... Microsoft ISA Server Partners: Partner Hardware Solutions ... The routing table for the network adapter Internal includes IP address ranges that are not defined in the array-level network Internal, ...
    (microsoft.public.isa.configuration)
  • Re: ISA 2006 Basic Configuration
    ... Troubleshooting Client Authentication on Access Rules in ISA Server 2004 ... Microsoft Internet Security & Acceleration Server: ... Microsoft ISA Server Partners: Partner Hardware Solutions ... The routing table for the network adapter Internal ...
    (microsoft.public.isa.configuration)
  • Re: Upgrade w2k
    ... will make new server with same SIDs, GUIDs, server names, IP addresses ... This can cause conflicts on the network... ... Now you take it offline and bring on the network another clone of this ... take it away from user's network and upgrade it. ...
    (microsoft.public.windows.server.general)
  • RE: Digest authentication does not work for HTTPS-requests through MS
    ... I've seen this problem happening when the network range in your "Internal" ... Clients use Internet Explorer 6.0. ... All the testing was performed having SP1 for ISA Server 2004 installed. ...
    (microsoft.public.isa)
  • Re: Remote Web Workplace not working properly
    ... How did you get to 2003, an inplace upgrade or swing migration? ... take control of the server in the room right ... over the internet or from any one desktop within the network). ... back to the login window. ...
    (microsoft.public.windows.server.sbs)