Re: No internet access thru SBS

thanks for your help

"POP" wrote:

Ooops, what happened there...

To follow on, in a single network scenario:-

ISA Server recognizes itself (the Local Host network). Everything else is
recognized as the Internal network. There is no concept of an External
network. Microsoft Firewall service and application filters operate only in
the context of the Local Host network. (ISA Server protects itself no matter
what network template is applied.) Because the Firewall service and
application filters operate in the context of the Local Host network, you
can use access rules to allow non-Web protocols to the ISA Server computer
itself.

• Application layer inspection. Application level filtering is not
functional, except for the Web Proxy Filter (for HTTP, HTTPS, and FTP over
HTTP).

• Server publishing. Server publishing is not supported. There is no
separation of Internal and External networks, so ISA Server cannot provide
the network address translation (NAT) functionality required in a server
publishing scenario.

• Firewall clients. The Firewall Client application handles requests from
Winsock applications that use the Firewall service. This service is not
available in a single network adapter environment.

• SecureNAT clients. SecureNAT clients use ISA Server as a router to the
Internet, and SecureNAT client requests are handled by the Firewall service.
Because the Firewall service is not available in a single network adapter
configuration, such requests are not supported.

• Virtual private networking is not suported.

The latter being very important if you phone PSS.

In your scenario, going to ISA Manager, Monitoring and Logging then start
query would give you an indication what is happening to internet requests.
If I was desperate that couldn't restart the server then would restart
Microsoft Firewall and the 3 ISA services.

I gather its working now so hope some of my info has been a help.




"Joe" <Joe@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:2A33C570-D09F-4B28-B127-896E22B70D4E@xxxxxxxxxxxxxxxx
Pop, this is a 2 NIC setup. (can you run ISA with a single NIC? I just
asumed
it always needed at least 2 NICS) I did not check the ISA log. Good
sugestion. This is not a UK / BT customer. It is US.

As for running ICW, everything is now OK. I left the site with everything
working the day before then somwhere the internet pass-through in the SBS
quit. Exchange continued to work, I could ping to the outside world. Just
no
one could go out on the internet from the LAN side.

I assume that is the proxy server feature that quit. Which I guess is part
of ISA??
Again I would like to know how to troubleshoot this and maybe be able to
stop/start the correct services to try to get it working again. I have 5
SBS
installs and this paticular event has never happened to me before.

"POP" wrote:

Hi Joe

I have had this and turning off router for 3mins and turning back on
resolved, granted didn't test another pc direct to router though.

Re running internet connection wizard,

100% sure nothing changed in server

Have you run up ISA monitoring log to see if this gives indication

Is this one nic or 2, if 2 IP address of WAN connection is correct IP in
internet connection wizard ?

Is this UK and a BT customer.... last 2 weeks had 3 of these.


"Joe" <Joe@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:3E90A883-D0F6-4374-AFFD-20863179C74B@xxxxxxxxxxxxxxxx
On additional peice of information. The POP service for exchange was
connecting
and downloading OK during this time.

"Joe" wrote:

I got a call from a customer that the internet was down. The server is
SBS2003 running ISA.

At the site from the server I could not get an internet connection
using
IE.
From the SBS command prompt I could ping external sites, no problem.
DNS
settings were correct. Internal users could connect to the SBS server
.

I connected a PC directly to the WAN side of the server and found the
internet working OK so indeed it was a problem in SBS. I could not
find
any
meaningful error messages or any obvious (to me anyway) stopped
services.
Rebooting the SBS server corrected the problem.

My question for the next time is what service(s) are required for
internet
pass-thru. I would like to be able to try restarting them to possibly
keep
from rebooting the server. Any other trouble shooting hints would be
appreciated.

Thanks




.

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