Cable Modem Problems

SeleucusNicator

Diadoch
Joined
Aug 25, 2002
Messages
6,822
Location
America
Greetings.

I connect to my Comcast High-Speed Internet using a pretty standard-looking RCA cable modem, which is hardware routed to two computers. It's gray, has lights that say "Internet", "PC Link", "Cable Link", "Cable Activity", and "Message". Normally, the first four lights will be on and everything will be working perfectly.

Recently, at seemingly random times, my internet connection will drop. Sometimes, the four lights on the moden that are on will begin to flash on and off and then all put "cable link" and "pc link" will go off. Sometimes, the "message" button will flash and then all of the others will go off. Usually, this rights itself after a few minutes, but it is annoying nonetheless.

I called Comcast and they said they could not help me over the phone but would be willing to send somebody over to investigate. Of course, since this is random, I don't want to waste their time and have them come over and wait for this to happen. Sometimes it happens at intervals of hours.

I noticed recently, however, that this behavior is not entirely random. It seems to occur most frequently when I am doing something that would signify publically that I am online, be it use AIM, log into NationStates.net, etc.

Now, I have made many enemies during my time on the internet, and knocking me offline whenever they saw me on would not be beneath them -- they did it many times with the +++ATH0 command when I had dialup. Indeed, due to a recent slip-up of mine, the IP of one of the computers routed through this modem was revealed to at least one of those individuals, if not all of them.

My question is, would it be possible for these people to knock me offline or mess up my connection knowing my IP and that I was online? If so, how could I confirm this? How could I stop this?

Or am I just paranoid?
 
Just because you're paranoid, don't mean they're not after you...

Programs like AIM and Yahoo Msgr are very easy to hack into and flood someone with packets, causing them to lose connection to their server. I use Comcast also, and I'm pretty sure they have a built in firewall - meaning it would be highly unlikely (tho still possible) that you would get flooded.

I would suggest trying to isolate the problem by maybe loading similar programs to the one's that seem to cause problems to see if it's the type of programs or your fellow users. It sounds like it may be faulty modem, or possibly a bad coaxial/cat cable. Do you split the cable via a hub/router?

I would recommend testing little things out on your own, then having a Comcast tech come out if you still need...they tend to be morons.
 
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