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DSL Connection Hijacked

By MBR2 ·
I have a small network with a Netware 5 Server and 5 workstations. In the past 3-4 days I have noticed that at about 5:30 pm or so my internet connection goes down or is sporadic at best. I have called my ISP and they have tested my DSL router and they said that there doesn't seem to be anything wrong. My ISP requested that a test be done on the line and that came back fine also.

Is there any tool that I can use to see if maybe
my DSL line is being used to transmit anything that I don't know about? Could I have a virus?

Any help would be greatly appreciated.

Thanks

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by Curacao_Dejavu In reply to DSL Connection Hijacked

if all pc's are connect to a hub use netprobe to see the traffic that is going on the network,
http://tinyurl.com/yckk

else use a software firewall on all machines *zonealarm and tiny personal firewall (both are free) or you need to invest in a hardware firewall (linksys , dlink and others ) and connect the computers behind the firewall.
of course only allow legitemite traffic going through)

Leopold

Leopold

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by MBR2 In reply to

Thanks I will give that a try!

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by Joseph Moore In reply to DSL Connection Hijacked

Are you running a SMTP mail server or FTP server?
For SMTP, maybe it is an open relay server, and people are using it to send a lot of spam.
For FTP, maybe it is not configured right, and people are using it to store warez or MP3s or other large files.
With Netware, that does rule out all of the Microsoft-based virii/worms.
So, what do you allow into your network?

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by MBR2 In reply to

I have not set the server up for e-mail (SMTP) or FTP (is there a setting to make it an FTP sevrer), all e-mail goes directly to the workstations. I am using the default config. that comes with a Netware server, so I guess whatever that allows to come through.

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by Chris910 In reply to DSL Connection Hijacked

go to http://www.dslreports.com/tools and run both the speed tests and the line packet loss tests. In all likelyhood you will find that your ISP will count on you not being able to tell that their service is Poor durring PEAK HOURS.
It is also a good Idea to keep your Virus software updated now that you have a full time connection.

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