replys to the 3 points given
1)i agree on this one, an alternate scanner would definitely improve your
chances of catching a virus
2)this ties in with #1, though norton does scan on access, all machines
might not be protected or might not be up-to-date and also clamav may catch
what norton misses.
3)clamscan actually will search within compressed archives such as
zip,Z,rar,arj,ar,tgz files. it scans the zip and Z files automatically and
can be configured for many other compressed archives. i use clamscan to
scan all my windows machines and my linux file servers and email server
backups with every available compression daily.
by the way, clamav has the highest detection rate of any virus scanner as of
aug31 2007. do a web search and you will find a number of references to
that. i also have clam update 3 times a day. i use avg on my desktops but
plan on switching to clamwin as soon as they release a resident scanner..
kasperky is also quite good. both better than norton by a little bit.
mcaffe is junk!
On 10/9/07, Adam Goryachev <[EMAIL PROTECTED]> wrote:
>
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>
> Simon Avery wrote:
> > Hi.
> >
> > Debian Etch and 2.1.2.6
> >
> > I'm not convinced this is a sensible thing to ask, but worth a try...
> >
> > I'd like to scan for viruses on our company LAN periodically, in
> > addition to a resident guard program. This has historically found bad
> > things in caches before they've been run.
> >
> > I have been using AVG on each Windows client but the free version
> > doesn't allow useful scheduling, only "once per day every day" and as
> > it's very intrusive causes much unrest from my users who suddenly find
> > their computers crawling.
> >
> > So - would it be possible to scan the backups as they are made using
> > BackupPC? Possibly during the "link" phase after a successful backup.
>
> In my limited experience, there are a couple of things to consider:
> 1) It might be an advantage to scan with clam simple because it is
> different to the AV on your client machines, and therefore will detect a
> different set of virii.
>
> 2) On my windows XP machine with Symantec Norton AntiVirus 2007, it
> 'seems' to scan *every* file during the backup anyway, because rsync
> will open the file to calculate the checksum, and NAV does on-access
> scanning. I imagine this is the same for other AV products. If anyone
> can confirm/deny this happens, or advise how it can be avoided, I would
> appreciate it.
>
> 3) To scan on the backuppc server, you would need to uncompress them and
> remove the backuppc specific encoding, or teach your virus scanner how
> to decompress these types of files. Otherwise it will likely miss most
> infections anyway.
>
> Just a couple of thoughts on the matter.
>
> Regards,
> Adam
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