Greetings all,

I'm pulling my hair out on a problem. All our desktops are having challenges
surfing the web; however internal network applications, external ftp traffic
all seems to be working fine. Challenges seem to be even more consistant with
longer URL's

Setup:
* SBS 2003 Standard edition - single NIC configuration, connected to
Gigabit HP 2610 managed switch. Switch connects to 871 Cisco router.
* No proxy setup
* No hardware firewall (other than Zone-Based within Router)
* Symantec End-Point Security (Antivirus and Trojan portions, not software
firewall

Troubleshooting I've tried (not in any order)

- reset Internet Explorer to factory settings
- tried firefox with similar results.
- nslookup to local dns + forwarders seem to work quickly
- tried laptop directly to DSL modem to try and isolate that - works just
fine; mind you system is not logged into domain.
- Ping and Traceroute work most of the time. Sometimes I get a time out
between router (10.0.0.254) and ISP gateway address.

My theory is either to much broadcast traffic on the network, a delay in
the responses from client -> local dns -> DNS Forwarder and back; a faulty
interface on the router (how do u prove that) or something I'm missing all
together.

Another challenge maybe the amount of SMTP traffic comming in and being
processed. We have received a ton of spam and I am filtering using spamhaus
and spamcop at the SMTP filter level. Maybe this is causing issues with over
all browsing performance.

I've hooked up WireShark on the server to see if I can figure out what may
be too much chatter - but not sure how to isolate particular components with
it.



Any suggestions?

Hi Chris:

Usual first question is what is providing DHCP on the network, and second is
for you to post up the results of:

ipconfig /all > C:\iptest.txt

from both the server and a workstation, and please tell us which is which.

No need to munge anything, but you can change the domain name and the server
name if you must.

I have seen SBS servers get 10K spams per day, without noticeable effect on
the internet speed, but this may be a function of total bandwidth.

--
Larry
Please post the resolution to your
issue so that others may benefit.

Get a Health Check for SBS at:
www.sbsbpa.com


"Chris" <Chris@newsgroup> wrote in message
news43EA428-2B5B-4A9A-A232-DA081F5587AB@newsgroup

> Greetings all,
>
> I'm pulling my hair out on a problem. All our desktops are having
> challenges
> surfing the web; however internal network applications, external ftp
> traffic
> all seems to be working fine. Challenges seem to be even more consistant
> with
> longer URL's
>
> Setup:
> * SBS 2003 Standard edition - single NIC configuration, connected to
> Gigabit HP 2610 managed switch. Switch connects to 871 Cisco router.
> * No proxy setup
> * No hardware firewall (other than Zone-Based within Router)
> * Symantec End-Point Security (Antivirus and Trojan portions, not software
> firewall
>
> Troubleshooting I've tried (not in any order)
>
> - reset Internet Explorer to factory settings
> - tried firefox with similar results.
> - nslookup to local dns + forwarders seem to work quickly
> - tried laptop directly to DSL modem to try and isolate that - works just
> fine; mind you system is not logged into domain.
> - Ping and Traceroute work most of the time. Sometimes I get a time out
> between router (10.0.0.254) and ISP gateway address.
>
> My theory is either to much broadcast traffic on the network, a delay in
> the responses from client -> local dns -> DNS Forwarder and back; a faulty
> interface on the router (how do u prove that) or something I'm missing all
> together.
>
> Another challenge maybe the amount of SMTP traffic comming in and being
> processed. We have received a ton of spam and I am filtering using
> spamhaus
> and spamcop at the SMTP filter level. Maybe this is causing issues with
> over
> all browsing performance.
>
> I've hooked up WireShark on the server to see if I can figure out what may
> be too much chatter - but not sure how to isolate particular components
> with
> it.
>
> Any suggestions?