DoS attack from my network
In the last few days we've been having slow connection problems with our dsl here at work. Slow loading pages if they load at all. Called Verizon and they said that we had too much traffic comming out and hardly any goin in. So to make a long story short I have at least one machine infect with a Blaster like virus. At the moment I have half of the machines offline and those online work fine atm.
How can I find out which one is infected without having to install AV on each one? I know we should have AV protection on every machine but they have either expired or just never had any. And my company is too much of a tightwad to pay for 20 licences.
A friend suggested a network packet anylizer but I can't find what I need.
Suggestions are appriciated.
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His pants are tight...but his morals are loose!!
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