Hello all.....and a Network Shield thought....

Hello everyone, Ive been testing avast! for a day or two now but havent quite had the time to explore the program fully yet…even though I have been trying to get acquainted with some of the forum threads first…

At the moment, its looking like a promising replacement for my current NOD32, which I have to say in its defense works just fine, even though it can be a bit of a nuisance with all its settings but thats another story…

anyway, I have a question about the Network Shield…

I have read and hopefully understood correctly that the Network Shield just “sits there” as an extra layer of defense (IDS)…

I have a software firewall and am also behind a router so was wondering whether I actually needed the NS or not…on further reading, it seems that because it works at the driver level it uses no resources, so I should be able to leave it running just for another layer of security…but…

What I did wonder about, was the fact that as it seems to intercept all network traffic and because it uses signatures, wouldn`t that mean it is in fact potentially causing the data flow to be slowed down to some degree…or not ?

Im thinking the performance hit (if any...as I dont understand the way it works) could be in some way measurable if there`s a lot of traffic, and moreso lots of different simultaneous traffic threads from different sources…ie: checking mail, autorefreshing multiple forums, downloading multiple files, streaming media etc…

Basically, could it be an issue, is what I`m wondering ?

and I`m sure I could have phrased that in two sentences if I really tried ! ::slight_smile: :slight_smile:

The Network Shield uses very little in the way of resources and whilst I don’t have a router (dial-up) I do have a software firewall and I leave it enabled. There have been a number of occasions reported in the forums where a users firewall was disabled and the network shield provided that important additional level of protection.

Personally I would leave it on if your firewall and router are working normally it shouldn’t have any work to do so won’t be using much in the way of resources. As a dial-up user I don’t see any impact and it isn’t monitoring all traffic just known routes of entry for worms, exploits, etc.

So I don’t know what it is you are monitoring, possibly the Web Shield monitoring http port 80 traffic. Again I don’t see any hit in traffic but that may be different with a fast connection, but for the majority of people that too isn’t an issue.

Thanks for the info…that cleared that up, I didn`t realise it was only monitoring the specific ports that were vulnerable.

I must have misunderstood something I read earlier and thought it was scanning all traffic for suspicious behaviour :wink:

I don’t see a but here… It won’t harm your system, it’s another layer.

I can’t see any problem with data lose or performance issue… it works at low level…

Anyway, welcome to avast forums. Here you can learn, enjoy and help the others.

No problem, welcome to the forums.

Thanks for the info, any extra security is a good thing :smiley:

I’m using Avast Home 4.8.1169. The Network Shield seems to not be working. It shows the following:

Last scanned:
Last infected:
Scanned count: 0
Infected count: 0
Task Name: Resident protection
Run time: 2:53:24

I hear others saying that its OK, its working as it should and will pop up when it detects an attack. I’m not satisfied with that statement, because I had the Web Shield doing this same thing until I found, by luck, instructions on how to set up a proxy in Firefox.

So before I actually entered the required settings for Web Shield, it too was showing the same stats as Network Shield is now, and at the time, I thought Web Shield too was working as it should, but it obviously it wasn’t.

Can you guys see my reason for concern?

Follow http://forum.avast.com/index.php?topic=34836