Help: Accessing secure websites over LAN

[Pierre van Rooyen]

I have the following problem. Every time I try to access an secure
website or a page with secure items the browser tries endlessly to
connect to the page/item but with no avail. No error message is ever
returned. This only happens when I try to access these sites as a
client computer on a LAN with shared Internet connection. I have no
problem accessing the secure websites using the host computer. I also
changed the client computer to host and
that enabled me to access secure sites. I should also mention a
secure site/item is always the cause for my browser's inability to
connect to a site, that there are some secure sites that I can access
(althought it seems if it happens at a slower speed).

I didn't have this problem when I used to connect to the Internet
using a dail-up connection. The problem started when I installed my
broadband wireless connection. As a novice I am not sure which
protocol the wireless connection use but I have noticed settings for
PAP, MPAP, CHAP and that type of stuff that is different from the
dialup connection.

I have tried a range of options to resolve the issue including:
- Changing/disabling the firewall on client and host computer
- Reinstalling Windows XP on both client and host computer
- Trying different browsers
- Toggling with SSL and encrypting settings
- Toggling with the IPSec policies and even removing it with "net stop
policyagent"

Please feel free to forward this message to anyone/any newsgroup that
you think might be better able to assist.

Thanks in advance

Pierre

 

[Robert L [MS-MVP]]

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


--
For more and other information, go to http://www.ChicagoTech.net

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.

 

[Daniel]

Hello,

Do you mean accesing a secure server in your local network or a secure
server on the Internet?

First, try to check the basics. Can you ping the host computer from
client computer and vice versa? The Router have 2 IPs: 1 external to
access the internet and one internal to access/share your local
network. Check that the Internal Network IP's ranges are the
recommended by your router manufacturer. Usually, the IPs ranges
192.168.x.0 to 192.168.x.255 are used to LANs. If your router have
DHCP Server (assigns an unique IP address to all computers on your LAN
without an IP -Assign Automatically-), make sure this is not causing
conflicts with Internet Connection Sharing (you don't need this if
using a router). If the Host computer have their Local Network Card IP
to 192.168.0.2, usually this have to be configured specifying the
"Gateway" IP too (in this case, the Router's Internal Network IP or as
specified by your ISP).

Good luck,

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Daniel
Interdesigner Software Development

http://www.interdesigner.com
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