Re: Problem with some network connections

From: Robert L [MS-MVP] (noreply_at_hotmail.com)
Date: 07/26/04 

Date: Mon, 26 Jul 2004 09:14:59 -0500

quoted from http://www.ChicagoTech.net
Can't access some web sitesSymptoms: 1) If you're using MS ICS or Windows
server as router to access the Internet, your clients may not be able to
access certain web sites. However, the ICS host or the server doesn't have
this problem.
2) After installed a new router or cable modem replacing dial-up to access
the Internet, you can't access some web sites.
3) You also find that most web sites you can't access are block to ping or
they are security sites using HTTPS.

Causes: 1) The problem occurs because many web servers block ICMP messages
and the packets are dropped. As a result, the requested web site doesn't
load.
2) This problem is caused also by an incompatible MTU networking setting.
You may try to install the latest SP. If you use MS ICS, you may want to
configure all your Client computers to use the new, lower MTU as the default
for all Internet communication. To modify the MTU size, locate the following
registry key: HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Services\
Tcpip\ Parameters\ Interfaces. If you use a router like Cisco DSL Router,
you may want to adjusting the PPPoE MTU Size. For example, to adjusting the
PPPoE MTU Size on the Cisco DSL Router, do

interface ethernet0
 no shut
 ip address <ip address> <subnet mask>
 ip adjust-mss 1452 

-- 
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Don't send e-mail or reply to me except you need consulting services. 
Posting on MS newsgroup will benefit all readers and you may get more help.
Robert Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on 
http://www.ChicagoTech.net
This posting is provided "AS IS" with no warranties.
"Marcin" <marcin@itookmyprozac.com> wrote in message 
news:fcf4f78.0407260509.362e0b9a@posting.google.com...
> Hi,
>
> I have one problem with my Windows XP. I have slow internet connection
> (slow means that connecting to server is slow, but after connect is
> works ok, dns resolving is fast). I have problem with some servers -
> when I try to connect (some http servers, ssh servers) I receive
> timeout message. But I have Windows95 on my old P133. When I try to
> use it - I have no problem with connection (connect is slow, but after
> connect is works fine), so I guess that there is a possibility to set
> up Windows XP to work with those servers...
>
> Any suggestions?
> Thanks in advance.
>
> Marcin

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