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Internet Connection Woes

By rebelleader ·
Here is a quick description of my Home network.

Linksys 4-Port router
Connected to that is my cable modem, Linksys Wireless Accesspoint, 1 Win Xp Pro computer(sp2), 1 linksys 4-port switch.
Connected to the switch is 1 Win Xp Home computer(sp2), 1 Win XP Home Laptop(sp2).

The connectivity issue comes about between the laptop and the switch. If I connect the laptop directly to the router all is good. If I connect the laptop through the switch i get massive amounts of dropped packets. The computer that is attached to the switch has no connectivity probs at all. Even tried using a newer switch of the same model and experienced the same problem.

I did various virus scans and used Spy Sweeper and found some things but I think I managed to clean everything off.

I am not quite sure what to do next, any advise is welcome.

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by rebelleader In reply to Internet Connection Woes

.... I forgot to mention that I swapped out the ethernet cable so I dont think that is the issue. This problem just came about recently, the laptop had no problems last week. Thanks again.

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by BFilmFan In reply to Internet Connection Woes

When you cleaned that laptop, did you first stop use of the Windows Recovery option?

The malware, trojans, viruses, etc. could be placed right back on after your cleanup.

I would recommend doing a scan of the laptop with HiJackThis for any unknown services running and discover what program is using them.

http://www.spychecker.com/program/hijackthis.html

In addition, you may want to use another product such as AdAware to scan the system. No single product will catch all the current malware mucking about on the net.

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by rebelleader In reply to

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by sgt_shultz In reply to Internet Connection Woes

weird. at first, i thought, naw, switch not the problem, but your post excellent with details, reread it and thought of the more than one strange head-banging problem i have seen caused by buggy linksys devices designed so very cheaply...might try another brand switch (not dlink either) just in case? otherwise, what else could it be. spyware would cause dropped packets connected to router and you say it isn't doing that. have you tried 'locking down' the nic speed/media type: device manager, network interface card properties, probably. change from autosense to 10mb half duplex. this is lame but all i can think of...help us obi-wan

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by rebelleader In reply to

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by ReWrite In reply to Internet Connection Woes

How did you determine that the packets are being dropped? If you are using the xp firewall try disabling it and see what happens.

Cheers.

RW

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by rebelleader In reply to

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by rebelleader In reply to Internet Connection Woes

To determine why I was not getting a connection to the internet I opened up the DOS prompt and ran a continuous ping to another computer in my home network and simultaniously to a site on the web. In each case packet loss was around 50%.

I will run hijackthis as suggested.

In reguards to my switch I just dont think it is the cause of the problem. I have 3 other of the same switches and guess I can try each of then also. But like I said this has never been a problem before.

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by rebelleader In reply to Internet Connection Woes

I ran HiJackthis and also adaware. System seems to be totally clean. Yet the problem remains. The other computer on the switch has no problem connecting yet the laptop still does. I tried using different ports on the switch as well as my other 3 switches of the same make/model. Still connectivity is bad. When trying to load a web page, after a minute or so it says something along the lines of "Invalid Http request" I have tried to connect to a variety of sites, and still have problems. I checked my hosts file sto be sure that nothing wierd wa in there and found a strange line but was able to remove it.

Hope someone can help.

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by brddog In reply to Internet Connection Woes

I think Sgt. is on the right track with changing conection speed to half duplex. Had a problem with router rebooting till I changed duplex speed

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