Ping:connection fine.IExplorer refuses to use the connection

  • dennisolly2
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Post 3+ Months Ago

Hi!

I think this is a weird problem.

I am running XP home and IExplorer is refusing to use my existing internet connection. The weird thing is that the connection is fine: when I ping a known server, I get replies (see below).

Below I followed up on some of the suggestions in other posts to get some info about my connection.

Everything else works fine. The network is wireless, as you can see below, IExplorer is working fine one my other computer. I am running mcafee virus software with up to date virus definitions... none found.


Any info would be appreciated, I hope you can help,

Dennis



Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\wv>ping 127.0.0.1

Pinging 127.0.0.1 with 32 bytes of data:

Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Ping statistics for 127.0.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms







C:\Documents and Settings\wv>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Sheep2
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : U.S. Robotics 802.11g Wireless Turbo
Adapter
Physical Address. . . . . . . . . : 00-C0-94-E5-C4-8C
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.123.104
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.123.100
DNS Servers . . . . . . . . . . . : 192.168.123.100





C:\Documents and Settings\wv>ping http://www.google.com
Ping request could not find host http://www.google.com. Please check the name and try a
gain.




C:\Documents and Settings\wv>ping 66.102.9.104

Pinging 66.102.9.104 with 32 bytes of data:

Reply from 66.102.9.104: bytes=32 time=36ms TTL=244
Reply from 66.102.9.104: bytes=32 time=34ms TTL=244
Reply from 66.102.9.104: bytes=32 time=35ms TTL=244
Reply from 66.102.9.104: bytes=32 time=35ms TTL=244

Ping statistics for 66.102.9.104:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 34ms, Maximum = 36ms, Average = 35ms






C:\Documents and Settings\wv>route print
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 c0 94 e5 c4 8c ...... U.S. Robotics 802.11g Wireless Turbo Adapter - P
acket Scheduler Miniport
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.123.100 192.168.123.104 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.123.0 255.255.255.0 192.168.123.104 192.168.123.104 20
192.168.123.104 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.123.255 255.255.255.255 192.168.123.104 192.168.123.104 20
224.0.0.0 240.0.0.0 192.168.123.104 192.168.123.104 20
255.255.255.255 255.255.255.255 192.168.123.104 192.168.123.104 1
Default Gateway: 192.168.123.100
===========================================================================
Persistent Routes:
None




tracert 66.102.9.104 also returns 'Trace complete' in 11 hops.


This situation seems somewhat similar to the problem posted by
Alkatr0z (internet Not working, no hostname resolution; may 26th).

The reason I think the situation is similar is that I used to get junk characters too when pinging. (Pinging ►; with 32 bytes of data:). This cleared after reinstalling IE6SP1, although the problem persists. So with me too, hostname resolution appears to be the main concern
  • ATNO/TW
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Post 3+ Months Ago

Try an OZZU search for

DNS cache resolution (select any terms and the Windows forum)

You'll find several posts where others have had this problem. See if any of them help you.
  • dennisolly2
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Post 3+ Months Ago

Thanks for replying!

I searched the forum, also before posting; I went through the two pages of hits for the query: DNS cache resolution (select any terms and the Windows forum). Indeed some posting sound rather similar. I have tried the suggestions in there.... no luck.

I am sure I have the DNS settings correct: the DNS should be IP of the router. This works fine, right at this time, for the other computers on my LAN (two others) and used to work for my laptop (which is the one bugging me now).

Also when I enter for example the IP address of google directly in the address bar IExplorer cannot connect. (shouldn't this at least bypass the need for a DNS until I get to the page itself?)



I have tried the following:

entered IP numbers of DNS of my ISP (and of another DNS server I know is up)

Disabled WINS resolution

I had already tried uninstalling IE6 and then reinstalling from my original CD (and reinstalling IE6SP1 by downloading the full package using my desktop computer, by "c:\ie6setup.exe" /c:"ie6wzd.exe /d /s:""#E" ).

I am not running kazaa or other p2p or whatever on the laptop. Never have, it's for work.

Also, other software, for example my SSH2 shell I use to connect to the server at work, can't connect to the net. The annoying part being that I can ping the server from the same laptop and get a reply.... all the time!
It really seems windows doesn't know where to look to access the internet. For example the problem persists when I use my ethernet (non wireless) port to connect my laptop directly to the router. I can ping the whole world but cannot connect to the web...

When I run Network Diagnostics in XP Help and support: DNS comes up [passed].



This is driving me crazy... I have no clue where to look next?

thanks for the suggestion though,
Dennis
  • Leo Tapia
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Post 3+ Months Ago

you may have firewall software that can be blocking access to the web
  • Foxy
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Post 3+ Months Ago

well, if u can ping other ips, and cant connect, possibly, something corrupted winsock keys possibly? like spyware....
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Post 3+ Months Ago

Or the router itself may be disabling TCP access :)

I spent 45 minutes the other night tryin' to figure out why I couldn't get the damn wireless machine online.

The machine booted up, it had network access, the router allocated it an IP address, I could ping other machines on the network, other machines on the network could ping it, all the other 3 machines could get on the web, but that one couldn't, wouldn't connect to MSN, check E-Mail, nothin'.

Then it finally dawned on me.

I set it to disable TCP access on all ports after 9pm (so that when they kids are using it, they know it's time to go to bed).

Like I said, I farted around for 45 minutes before I finally realized.
  • dennisolly2
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Post 3+ Months Ago

Hi Leo, Foxy and Axe, thanks for replying!

To answer your questions:

1. Alas, no firewall.
2. I don't think the router is blocking TCP traffic. Two other computers on the same network are doing fine, same router.

3. corrupt winsock keys? The laptop I use for work, no games or downloads installed there. Nevertheless, some spyware may have gotten on there... Any suggestion on how I could check for corrupt winsock keys? and repair them?

thanks,
Dennis
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Post 3+ Months Ago

If you know someone else with a win xp machine, you can just copy their winsock and winsock2 files. Then using regedit, go into your registry, delete your winsock and winsock2 files. I would suggest rebooting after doing that. Then copy the new winsock and winsock2 files onto your computer and double click on them to insert them into your registry. I would suggest restarting your computer again after you do this. Then hopefully all will be well.
  • dennisolly2
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Post 3+ Months Ago

Hi Shedevil,

Come to think of it, I reinstalled XP from my original CD over my existing setup and after reinstalled IE6SP1. Do you think it's possible winsocks are still corrupt after that?

Dennis
  • dennisolly2
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Post 3+ Months Ago

Hi all,

I tried using winsockxpfix.exe, as suggested in this thread http://www.ozzu.com/sutra80727.html#80727.

Also didn't work. I can still ping the world but IExplorer refuses to access the net. The problem should be somewhere with the DNS settings given the following:

    C:\Documents and Settings\wv>nslookup
    *** Can't find server name for address 192.168.123.100: No response from server
    *** Default servers are not available
    Default Server: UnKnown
    Address: 192.168.123.100
    >


192.168.123.100 is my router and should function as the DNS:


    C:\Documents and Settings\wv>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Sheep2
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Wireless Network Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : U.S. Robotics 802.11g Wireless Turbo
    Adapter
    Physical Address. . . . . . . . . : 00-C0-49-D6-D1-7C
    Dhcp Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 192.168.123.104
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.123.100
    DNS Servers . . . . . . . . . . . : 192.168.123.100



It doesn't however for the laptop, but does for the other two computers on the same net, using the same router.
As suggested on this forum, I tried using the ISP DNS IPs but that didn't work either.

Any suggestions?

Thx,

Dennis
  • Leo Tapia
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Post 3+ Months Ago

Bypass the router completely with that one system and connect your ISP modem directly to that PC obtaining automatic settings.
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Post 3+ Months Ago

or static settings if that is what your setup should be with your ISP
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Post 3+ Months Ago

Sorry! I should have said all this in the same reply. This is just to troubleshoot & eliminate router problems with that one PC. Sometimes just resseting routers and switches will clear things up as I have experienced in the past.
  • Axe
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Post 3+ Months Ago

dennisolly2 wrote:
2. I don't think the router is blocking TCP traffic. Two other computers on the same network are doing fine, same router.

Before reading the rest of the thread, I just wanna reply to this bit...

You can block specific access just to a single IP address.

Our router is setup so that ONLY the machine in the living room is blocked after 9pm. The other 3 machines hooked up to the router have 24/7 access.
  • DuckIT
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Post 3+ Months Ago

Is the router one that has a webserver? Can you http onto that? That would prove if its the router blocking it or not.

Checked you don't have any junk in your proxy settings? (tools>Internet Options>Connections? or any other strange internet settings (get another working PC alongside it and match all the IE settings against eachother)

You should defs get google for instance if you put its IP http://66.102.11.99 as it works for me. Other than the fact that it teaches you a lot fault finding like this, if you finding its taking a long time to resolve it may be quicker to just bite the bullet and reformat? Not a great answer I know but sometimes nasty problems like this are just quicker resolved by a rebuild.

S
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Post 3+ Months Ago

Hi Axe, DuckIT,

Thanks for taking the time to think about this.

Quote:
Before reading the rest of the thread, I just wanna reply to this bit...

You can block specific access just to a single IP address.



Yes, I know. In fact I used to think I was rather proficient with computers... not the case apparently.
To answer you question, I haven't touched the router. The laptop just stopped connecting to the net. But then, if you read my answer to DuckIT below, I'm not so sure it's not the router.


Quote:
Is the router one that has a webserver? Can you http onto that? That would prove if its the router blocking it or not.


Hmmm, seems I can't proof that: can't connect to the router website
- I can however ping the router,
- I can also ping the DSL-modem connected to the router
(the modem by the way also has an webserver interface)
- and I can also ping any computer on the internet


Quote:
Checked you don't have any junk in your proxy settings? (tools>Internet Options>Connections? or any other strange internet settings (get another working PC alongside it and match all the IE settings against eachother)


Checked proxy-setting: no junk there.
My desktop uses the same settings, and works. Because the laptop is XP and the working desktop is 98me, I had a friend over with an XP laptop, configured it... it worked right away. It was a laptop with an onboard wlan card so I couldn't test my card on his laptop. I have even gone so far (sigh) to buy a new us robotics wlan card (telling myself I would need it someday anyway) and tested that... no difference, the new card also doesn't work. back in the box.


Quote:
You should defs get google for instance if you put its IP http://66.102.11.99 as it works for me. Other than the fact that it teaches you a lot fault finding like this, if you finding its taking a long time to resolve it may be quicker to just bite the bullet and reformat? Not a great answer I know but sometimes nasty problems like this are just quicker resolved by a rebuild.


No google.


The way I see it, its either XP misconfigured so it doesn't use the available TCP/IP connection or its the us robotics router blocking all requests other than ping, from the laptop only?

I think I have looked everywhere and changed every setting on the laptop. I have no clue what could be wrong with the router.


by the way, I agree this is taking up an absolutely irritating amount of time... but so would reformatting and having to completely reinstall a working system with all software and settings and everthing.
Besides, I would just like to fix it. Not give up and reformat.

Pffff,

Dennis
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Post 3+ Months Ago

What's about access-list at router? Also maybe u can make NAT translation between outside and inside interface?
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Post 3+ Months Ago

Well, since you've already spent this amount of time and are determined to fix it, anychance you could supply some screen shots of your network properties dialog boxes?

I also, just noticed you're using a wireless router. I doubt that has anything to do with the problem, but I must have missed that earlier.

The only thing I know for sure is if you can ping external internet sites, but can't access them by name resolution it has to be a DNS issue. But you are certainly covering your basis and I'm stumped. In addition to the network properties, if you can supply a screen shot or two of some of the router settings, that might speed things up some too. Somebody may see something that jumps out at them that you may have overlooked? Not sure it would help, but anything's worth a shot at this point.

Nice to see you sticking with it. I know it's frustrating, but you seem to have quite a bit of patience.
  • dennisolly2
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Glad you're sticking with this too!

Quote:
What's about access-list at router? Also maybe u can make NAT translation between outside and inside interface?


The access-list is not a problem. The router allows access to my WLAN card, I can ping through it to the internet. +see below.

Quote:
Well, since you've already spent this amount of time and are determined to fix it, anychance you could supply some screen shots of your network properties dialog boxes?


There we go:

http://home.tiscali.nl/addadd/01.jpg
http://home.tiscali.nl/addadd/02.jpg
http://home.tiscali.nl/addadd/03.jpg
http://home.tiscali.nl/addadd/04.jpg
http://home.tiscali.nl/addadd/05.jpg
http://home.tiscali.nl/addadd/06.jpg
http://home.tiscali.nl/addadd/07.jpg
http://home.tiscali.nl/addadd/08.jpg
http://home.tiscali.nl/addadd/09.jpg
http://home.tiscali.nl/addadd/10.jpg
http://home.tiscali.nl/addadd/11.jpg
http://home.tiscali.nl/addadd/11a.jpg
http://home.tiscali.nl/addadd/12.jpg
http://home.tiscali.nl/addadd/13.jpg
http://home.tiscali.nl/addadd/14.jpg
http://home.tiscali.nl/addadd/15.jpg

http://home.tiscali.nl/addadd/20.jpg
http://home.tiscali.nl/addadd/21.jpg
http://home.tiscali.nl/addadd/22.jpg
http://home.tiscali.nl/addadd/23.jpg
http://home.tiscali.nl/addadd/24.jpg
http://home.tiscali.nl/addadd/25.jpg
http://home.tiscali.nl/addadd/26.jpg
http://home.tiscali.nl/addadd/27.jpg

Nice ;-)

Dennis
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Post 3+ Months Ago

Yeah.
U need choose one routing protocol beetwen two interfaces. Nat is enabled but u disabled receiving. Choose one of them RIP1 or RIP2. At Cisco I use RIP1.
  • dennisolly2
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Hi midhat!

Quote:
Yeah.
U need choose one routing protocol beetwen two interfaces. Nat is enabled but u disabled receiving. Choose one of them RIP1 or RIP2. At Cisco I use RIP1.


It makes no difference. The desktop still connects to the net, the laptop still can only ping it all. I have kept the routing protocol setting at RIP1 however. You may be right and there might be two problems of which this was one... let's hope so.

nslookup on the laptop still responds like this:


Quote:
C:\Documents and Settings\wv>nslookup
*** Can't find server name for address 192.168.123.100: No response from server
*** Default servers are not available
Default Server: UnKnown
Address: 192.168.123.100



thanks for giving it a shot. Other suggestions?

Dennis
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Post 3+ Months Ago

try setting yr transmit nat- to one of the rip.
receive nat- change to disable

I think u cant ping for address 192.168.123.100 coz of yr nat settings.
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Dennis,

First, I'm sorry, but I had to change your most excellent screen captures to links vs. Inline. We have a maximum width of 640 px for inline pictures to avoid skewing the tables on lower resolutions. Besides, they were seriously bogging down the page load.

The one thing that you haven't indicated you have tried is Leo Tapia's suggestion on the first page, and that is to bypass your router and hook your laptop directly to the modem. Then change your TCP/IP settings to automatic. vs. static. Since you're wireless, you may need to hardwire that one temporarily.

I guess the one thing that has nagged at me since this conversation started is why you are using the router for DNS at all. I have three computers at home on a router and cable modem, and all are set for automatic configuration, and I've never once had a DNS resolution issue. I don't believe I would ever use the router for DNS.

Other than that, I can't see anything odd about your router settings. There should not be two DNS settings for your router regardless (I don't believe). The problem with DNS in your router, is that it is not going to be able to do name resolution for the external Internet. At best it would only benefit your internal network, and your computers will see each other just fine without it.

Your situation is a bit puzzling, but I'm willing to bet if you hook directly to the modem and set everything to automatic you get an instant connection.
  • dennisolly2
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Hi Madmonk,

Quote:
try setting yr transmit nat- to one of the rip.
receive nat- change to disable


If I set it to that, none of the computers can access the net...


Quote:
I think u cant ping for address 192.168.123.100 coz of yr nat settings


I can ping the router at 192.168.123.100 (see my first post in this thread). I can ping any computer in the world. The problem is IExplorer on my laptop won't use the available internet connection.

Dennis
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Post 3+ Months Ago

Hi ATNO,

Quote:
First, I'm sorry, but I had to change your most excellent screen captures to links vs. Inline. We have a maximum width of 640 px for inline pictures to avoid skewing the tables on lower resolutions. Besides, they were seriously bogging down the page load.


That's fine.


Quote:
The one thing that you haven't indicated you have tried is Leo Tapia's suggestion on the first page, and that is to bypass your router and hook your laptop directly to the modem. Then change your TCP/IP settings to automatic. vs. static. Since you're wireless, you may need to hardwire that one temporarily.


I will try that this week. No time the past days.


Quote:
I guess the one thing that has nagged at me since this conversation started is why you are using the router for DNS at all. I have three computers at home on a router and cable modem, and all are set for automatic configuration, and I've never once had a DNS resolution issue. I don't believe I would ever use the router for DNS.


I followed up on your suggestion to enter the ISP's DNS instead of the routers... It doesn't change a thing. I can still ping the router and I can still ping any other computer on the internet, including the ISP's DNS.
I also tried enabling DHCP on the router and the laptop... no change. The router hands out an IP address, but IExplorer on the laptop can't do a thing with it.

Will post again after having tried the Leo Tapia's suggestion.

Thanks for now,
Dennis
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Post 3+ Months Ago

Hi ATNO,

I have just hard-connected the laptop directly to the dsl modem.
I set the IP and the modem as the gateway, and I could again ping the whole world, including the ISP's DNS.
IExplorer still refuses to access the internet, even now that the
wireless router is completely bypassed.


Conclusions:

1. The problem is not in the wireless router.

2. As far as DNS trouble goes, even when directly connected to the modem, IExplorer refused to access the webserver running on the modem when I typed its IP address in the URL-editbox in IEXplorer.
Keeping in mind that at that same time I can ping the modem, and I can ping everything out there.

3. This sucks.

4. The problem is with Windows and I really do not know where...


Dennis
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Post 3+ Months Ago

Dennis, you completely lost me on that one. I've never known a modem to have it's own IP address, nor have I ever seen a modem that has a built in webserver.

Now you have me confused as to what you are doing.

The idea behind hooking it up directly to the modem was to lose all the static stuff. If you hook directly up, and set everything to Automatic and absolutely nothing to static you should obtain an IP from your ISP and you should be automatically set to use the ISP's DNS servers to resolve domain names.


The fact that you can ping everything indicates that there is nothing wrong with the physical aspect of your network. The fact that you are not resolving indicates that there is a DNS issue. Nothing else would cause this problem. It is the External ISP's DNS servers that will resolve the names for you. Nothing else in your internal network will. Your router simply doesn't have the capacity to do so.
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Post 3+ Months Ago

Hi ATNO,

The 'modem' my ISP supplied with my DSL subscription turned out to be a modem/router combination (Zyxel 650R, see for example http://www.systemhouse.com/zyxel/prestige650.htm).
That's why it has a webserver/html configuration menu.


Quote:
The idea behind hooking it up directly to the modem was to lose all the static stuff. If you hook directly up, and set everything to Automatic and absolutely nothing to static you should obtain an IP from your ISP and you should be automatically set to use the ISP's DNS servers to resolve domain names.


Don't you agree that when I type the modem's IP address (192.168.1.254) directly into iexplorer (while I can ping the modem) iexplorer should be able to connect to the inbuilt webserver without needing any DNS server? Doesn't that tell us that DNS resolution is not the problem?

To be sure: the network setup I just tested was

LAPTOP -> ZYXEL650R -> DSL-line


The network setup that I am running (and which used to work) when not testing the above is:


Desktop 1 ->
Desktop 2 -> WIRELESS ROUTER (USROBOTICS) -> ZYXEL650R -> DSL
Laptop ->

In this set up the two desktops can surf the web. The laptop can only ping everything.


Dennis
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DNS servers are what convert the web address you type in, i.e. http://www.yahoo.com to the IP address assigned to that domain name.

Each DNS server on the web has a list of all the domain names and the IP addresses that they are assigned. Your router/modem positively will not have this list built in. Trust me, they just don't. There is no way you can depend on your router to be a DNS server for the web, because it just simply isn't. (Unless you've manually typed in several million names yourself *lol) The fact that you can ping everything but can't resolve web pages by the URL clearly indicates that for some reason your laptop is not accessing your DSL ISP's DNS servers. But I can't for the life of me figure out what you are doing differently with your laptop that is preventing it.

Sorry, but I'm about out of ideas.
  • dennisolly2
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Post 3+ Months Ago

Thanks for sticking with me on this.


I know what DNS servers are and what they do.

Quote:
The fact that you can ping everything but can't resolve web pages by the URL clearly indicates that for some reason your laptop is not accessing your DSL ISP's DNS servers. But I can't for the life of me figure out what you are doing differently with your laptop that is preventing it.


My problem is that IExplorer won't even access webpages by the IP-address! Bypassing the need for DNS servers!

Dennis

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