Cannot view webpages...DNS? or Virus?

P

Peter Entwhistle

I recently changed ISP and attempted to connect via the
ADSL USB modem, the connection to the internet is
fine..however cannot view any webpages using IE6...I've
pinged certain sites and get a response.
Typing the address into the bar returns a "page cannot
displayed error"...the DNS settings aref ine so I know
the modem is working properly.

After just checking a few forums it's suggested this
could be the cause of a hijack or spyware problem, I did
a scan and revelaed a trojan virus on the harddrive. (not
sure how it slipped in - using McAfee firewall/antivirus
and often run adaware too, could adaware remove essential
parts of IE if they were corrupted?)

The Trojan has now been "cleaned" though I still cannot
view anything using Internet Explorer.

Anyone help? I'm going crazy!

thankyou.
..
 
H

H Leboeuf

Can ping but not surf start here.
Quoted the article just in case you cannot reach it.

http://www.dslreports.com/faq/sbc/all#1453

Q: I can connect but I can't browse, first time setup (#1453)
A: There could be a number of things wrong with a new setup. The most common
is when the
dial up settings are set to use your dial up connection. Extra protocols
like
IPX/SPX or NetBEUI on the Network Telesystems PPPOE adapter or the NIC or
modem can also cause problems. Bugs in the Enternet 300 data transfer or
winsock getting corrupted by installation of software can be other factors.

1) Internet Options
Go to Start-Settings-Control Panel-Internet(Options).
On the General tab in the Temporary Internet Files Folder,
click on "Delete Files", put a check in "delete all offline content", click
"Ok". On the Connections tab, "Never dial a connection" should be selected
or all 3 options should be
greyed out. Click on "LAN Settings" and make sure everything is blank, click
"Ok", click "Ok".

2) Network settings
Go to Start-Settings-Control Panel-Network.
The Network Telesystems PPPOE adapter and the modem/NIC(that the modem uses)
should not have
any IPX/SPX, NetBEUI, Internet Connection Sharing, or other protocols on
them besides
TCP/IP. If there is no tcp/ip bound to the Network Telesystems PPPOE adapter
or modem,
then click Add-Protocol-Add, click on "Microsoft" for the manufacturer,
click on "TCP/IP" for the protocol, click "Ok", and verify that tcp/ip is
bound to the Network Telesystems PPPOE adapter and the modem/NIC. Then,
click on the extra protocols bound to the Network Telesystems and the
modem/NIC and click "Remove" until they are gone.
Click "Ok" and reboot. You may need your Windows CD for this step so keep it
ready.

4) Disable NIC
If you have a another NIC in the PC besides the one you use for the DSL
modem, you can try disabling it by right-clicking on the My Computer icon,
click on Device Manager,
expand Network adapters, double-click on the NIC you don't use, put a check
by "Disable in this hardware profile", click "Ok", close Device Manager. If
you had cable internet service using that NIC it may be interfering with
your ability to browse. Be sure to have your Windows CD
with you, in case the computer asks for it. Go to the network settings, go
to the tcp/ip
settings for the NIC, change it from "specify an IP address" to "obtain an
IP address automatically", click on the DNS tab, disable DNS here, click
"Ok", click "Ok", reboot PC. It's not uncommon for the tcp/ip settings for
the 2nd NIC to interfere with browsing if you had cable service before.

5) DNS server
Determine if it's a DNS issue. Go to Start-Run,
type "command", click "Ok". Type "ping 216.115.108.245", hit "enter", then
type "ping yahoo.com". The reason I use yahoo.com is because they accept
pings and many other sites don't. If you cannot ping the domain name, but
are successful pinging the IP address, then it may be a DNS
issue. To confirm the DNS problem, open your browser and type in
216.115.108.245, this will not require any DNS resolution and should open up
just fine to www.yahoo.com.
If that works, then you may want to change the DNS server you are using. In
Enternet 300, right-click on the connection profile, click on "TCP", choose
"Specify a DNS server", input a DNS number, click "Ok", disconnect,
reconnect, and open your browser. If that doesn't work
then go to Start-Settings-Network, double-click on tcp/ip for the Network
Telesystems PPPOE adapter, click on "DNS Configuration", click on "Enable
DNS", input a primary DNS
number and/or a secondary DNS number, click "Ok", click "Ok", and reboot
your PC.

6) Enternet 300 communication bug
If you cannot ping an IP address(216.115.108.245, this is yahoo and they do
accept pings), then it's not a DNS resolution issue, but a communication
issue. Enternet 300 will sometimes have a communication bug in its Advanced
Settings. In Enternet 300, go to Connections-Settings-
Advanced, make sure that Private API and Filter Driver are chosen. If they
are not chosen, change your current settings to Private API and Filter
Driver, click "Ok", click "Ok", right-click on the 2 little computer
monitors in the bottom right corner, click on "Exit", reconnect and
try to browse. If this doesn't work, change the Advanced Settings to
DHCP/Filter Driver, DHCP/Protocol Driver, or Private API/Protocol Driver.

7) Repair your browser
If you can ping domain names and IP addresses, then you may have a few
corrupt Internet Explorer files. On older versions of Internet Explorer, you
will not have the repair browser option in Add/Remove Programs. Go to
Start-Settings-Control Panel-Add/Remove Programs, double-click
on Internet Explorer, chooose "Repair Browser", click "Ok", and reboot.

8) Firewalls
If you are running a firewall such as Zonealarm or Black Ice Defender, it
may not be configured properly. Try disabling the firewall. If that doesn't
work try uninstalling the software. If you can browse, then check the
Firewall manufacturer's website for any PPPOE or DSL
specific settings in their FAQ or support section before reinstalling. A
firewall will work with DSL but if it's not configured properly then you
will have browsing issues.

If you have Zonealarm and Windows 2000, you should allow "Internet
Information Services" and "Services and Controller app" (both windows
services) access to the
internet. If these services are blocked, you won't be able to surf.

For more information:
http://www.dslreports.com/forum/remark,1292935;root=ilec,swbell;mode=flat#1297078

9) Winsock corruption
If you cannot browse on dial-up and DSL or with other ISPs, then your
winsock registry keys have become corrupted. If you can ping domain names
and ip addresses, then your Winsock may be corrupted and you won't be able
to browse even by IP address(http://216.115.108.245 will
not work, this is www.yahoo.com). DO NOT DO THIS STEP IF YOU ARE UNFAMILIAR
WITH THE REGISTRY. Make sure your PC is backed up first, and to back up your
registry. To back up
your registry, go to Start-Run, type "Command", click "Ok", type "scanreg
/backup", hit "enter", and close the screen. If your computer acts strange
after doing this, then reboot your PC, hit the "F8" key about every 1-2
seconds, the boot menu should appear, choose "Command
Prompt Only", then type "scanreg /restore", choose the backup, and choose
"Ok".

This was originally posted in a thread by dsljock, an ASI tech.
-----------------------------------------------------------
-
Your Winsock files are corrupted. I've run into this before on some of my
customers computers. This procedure can have a significant impact on the
customer's computer, but the need for this procedure seems to be showing up
more and more. During the installation of the DSL line,
sometimes the Winsock files become corrupted. Or they are corrupted to begin
with. And sometimes, everything works fine for a period of time, and then
the browser stops working. This is a procedure that many times will resolve
the problem.

Before you start the editing procedure, It is always a good idea to make a
Windows Start-Up disk, and to have a back-up copy of the registry.

Win98
(Customer Computer)
To restore damaged or corrupt Winsock files. The computer will connect with
the PPPoE adapter, but the browser will not work. The same symptoms are seen
using the analog modem. You can connect to your ISP, but the browser stalls,
will not browse. The technician will be to connect
and browse with their laptop.

REGISTRY EDIT (MAKE a REGISTRY BACKUP before attempting this!)

1. Remove Dial Up Networking From------ Control Panel
Add/Remove Programs
Windows Setup
Communications

(Reboot the Computer)

-Start-Run-Regedit

Registry Keys:

Expand:
HKey Local Machine

Expand:
System

Expand:
Current Control Set

Expand:
Services

Under Services, Delete the following Keys:
Winsock
Winsock2

Under Services, expand VXD.
Under VXD, delete the following Keys:
AFVXD
DHCP
MSTCP
WINSOCK
WINSOCK2


Rename in the "c:\windows\winsock.dll" to "winsock.asi"

After the Registry has been edited, go back and re-install Dial-Up
Networking to restore your Winsock files to original condition. You will
need the Win98 O.S. disk, unless the O.S. is
on the hard drive.
I have duplicated this procedure in WinME, but after I uninstalled Dial-Up
Networking, the computer would always reboot in Safe Mode, until I
re-installed Dial-Up Networking.

One thing to consider with a new installation on a WinME machine- you can
create a restore point before you start the installation. This will allow
you to return the customer's computer to its previous condition.
(Pre-Install).

After this procedure, you may have to un-install your PPPoE software, and
re-install it.

I would also recommend changing your NIC as the Westell is only 10meg. I'm
not sure if it will work with a 100m only card.

Good Luck!
 

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