Weird internet problem

[imported_GrdLock]

Starting Saturday, my internet has been all messed up. I'll be going through web pages, and all of a sudden everything will just stop responding completely. I don't get any cable unplugged, but everything network wise comes to a complete halt, no packets sent/received at all. 10 - 20 seconds later it'll go back to working fine.

Now, I'm on a campus OC line, so I honestly doubt a line of such caliber is having problems for multiple days, and all the other computers on the school network seem to work just fine.

Yesterday though I caught someone on the local network trying to get in to my computer through a ton of different ports. I didn't have a firewall turned on, and I then discovered three different trojan's on my computer. I quickly cleaned them off, turned on a firewall. I don't know how long they were on there though before found out.

Any ideas as to what coulda happened, or what somoene coulda done that would cause my internet connection to act this way? I've reinstalled my NIC drivers, even tried a different NIC card completely, still the same results. Now I'm contemplating just formatting to get rid of any damage that may have been done to cause this... but I do hate the process of backing up everything, formatting, then putting everything back the way you like it.

 

[Blazer]

http://forums.anandtech.com/me...=1346173&enterthread=y

read and follow,enable firewall,may want to use a software and a hardware firewall as it sounds like you have been targeted for someones exercise

 

[imported_GrdLock]

I've already cleaned the trojan from my computer. I've been running NAV2005, I don't know how the trojan even got on my computer to begin with without it detecting it. It's completely gone now though, and I have a firewall running now.

I'm still having this issue with my connectivity randomly dropping out though, and I can't figure what's wrong there.

 

[mechBgon]

Try Microsoft Baseline Security Analyzer, to check for vulnerabilities beyond what Windows Update will check for. Also go through all your NAV2005 settings and make sure Heuristics are set to maximum and compressed-file scanning is enabled, no exceptions, and no asking you what to do. Have it shoot first, ask questions later :evil:

If you have a wireless setup, enable its security measures to ensure that nearby computers can't get onto your access point (easily, anyway). Or disable the wireless access point and stick to cabled connection.

All you can be sure of at this point is that you've cleaned off the known Trojans from your computer. Keep an eye on it and may I recommend getting the Norton daily updates for a while, then launching full backscans of your boot drive after the updates.

If you plug straight into the network without a router at all, then go get a $40 Netgear RP614 to take the brunt of the worms/hacks for you.