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DoctorWho 09-27-2011 12:14 AM

Antivirus and connection sharing
If you run antivirus (Norton) on your main PC you use to share out an internet connection to several other PC's will the antivirus on the main PC help protect the "down stream" PC's?

I have a CCNA type of lab setup and I don't want to bother putting antivirus on any of my workstations or servers since they are older PC's and slow enough already. I was hoping my main PC's software would at least help monitor for any nasty stuff passing through. Will it?

I don't spend much time actually connected to the real internet but I'd like to avoid issues for the times that I am connected.


diyorpay 09-27-2011 10:46 PM

Any computer with a path to the Internet needs its own antivirus program installed.

See these free ones (where it says 'freeware'):

Avast, AVG and AntiVir are most popular but Microsoft Security Essentials has improved a lot. Get 32 bit version.

Here is a good comparison:

larry613 05-27-2014 09:18 AM

Two options -

1) Yes, you'd need to install AV on every machine you wanted to protect.

2) Don't connect your lab to the internet.

houseguy 05-30-2014 05:55 PM

It's already kind of been covered, but yes you should have AV on each machine connected to the Internet. Since you're going CCNA style, think of the main computer (the gateway basically) as kind of a router, it's taking packets destined to the internet from the internal network, encoding them, and forwarding them along. Then when they return, it keeps track of what data goes where.

That computer has no real way of looking for a virus inside of data packets, especially if you're just running like Norton something. If it's just a standard Windows ICS setup, it's operating on layer 3 and 4.

houseguy 05-30-2014 05:58 PM

Apparently this thread is from 2011, bad larry for necromancing, bad me for adding to it.


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