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"Luc The Perverse" <sll_NOSPAM_zm@remove.cc.usu.edu> wrote in message
news:424069bf$0$8960$3a2ecee9@news.csolutions.net...
> "Roger Hamlett" <rogerspamignored@ttelmah.demon.co.uk> wrote in
> message news:JCW%d.56$nc3.42@newsfe3-win.ntli.net...
>>
>> "Scott" <pawsandclawsremovethis@btconnect.com> wrote in message
>> news:d1p7v8$766$1@hercules.btinternet.com...
>> >
>> > "Nero" <nero@rome.it> wrote in message
>> > news:4240181a$0$8744$db0fefd9@news.zen.co.uk...
>> >> What the kinhell you runnin two firewalls for?
>> >> Why run SP2 firewall AND Norton??
>> >> Think you will be better protected?
>> >> That's like wearin a belt and suspenders
>> >>
>> >
>> > I'm running two firewalls for extra protection. It's fine to
> run two
>> > firewalls, but not two virus scanners and one virus scanner
> will read
>> > the others virus definitions and possibly delete them.
>> > I like to be careful just incase someone cracks through one of
> them, at
>> > least I'm protected that little bit more.
>> >
>> > Do you not recommend this?
>> Personally, when it comes to virii, you need belt, braces,
> suspenders, and
>> super-glue!.
>> There are some viruses, that specifically have been targetted to
> penetrate
>> particular virus scanners. Multiple firewalls is less worthwhile,
> since in
>> general how effective this is is entirely 'down' to how well the
> package
>> is set up. However the XP firewall, is pretty basic, and adding a
> version
>> that offers better configuration, is often a good idea.
>> Virus scanners should be perfectly capable of working without
> interfering
>> with one another. This is down to placing the definition files in
> seperate
>> directories. It is pointless to run two, if they are based on the
> same
>> type of detection algorithm, however systems are available that
>> deliberately 'cascade' multiple testers using different search
>> algorithmns. I use an external commercial scanner on the server,
> and then
>> a seperate system on the PC for exactly this reason.
>
>
> Have you EVER run two virus scanners simultaniously? The speed hit
> is unbelievable. And they are not going to protect you against
> brand new virii that nobody has definitions for.
Actually, some will. These are the so called 'heuristic' scanners, that
can look for resemblances to previous virii, or simply for the same file
arriving at multiple sites on a business network, and flagging it as
suspicious until proven otherwise. These were the bases of the systems
that did stop Melissa the first time round.
The speed hit is down to the power of the machines, and the natures of the
algorithms chosen.
> Now if there were some kind of arrangement where your
> router/gateway could run a virus scanner, and your computer could
> run one, that is something completely different.
>
> There's nothing wrong with two firewalls, except that if something
> isn't working you have to dick with two of them to fix it.
Currently, I am running three virus scanners in the router, and two in the
individual machines, and performance is such that an email arrives less
than 1/10th second after it first reaches the router.
Best Wishes
"Luc The Perverse" <sll_NOSPAM_zm@remove.cc.usu.edu> wrote in message
news:424069bf$0$8960$3a2ecee9@news.csolutions.net...
> "Roger Hamlett" <rogerspamignored@ttelmah.demon.co.uk> wrote in
> message news:JCW%d.56$nc3.42@newsfe3-win.ntli.net...
>>
>> "Scott" <pawsandclawsremovethis@btconnect.com> wrote in message
>> news:d1p7v8$766$1@hercules.btinternet.com...
>> >
>> > "Nero" <nero@rome.it> wrote in message
>> > news:4240181a$0$8744$db0fefd9@news.zen.co.uk...
>> >> What the kinhell you runnin two firewalls for?
>> >> Why run SP2 firewall AND Norton??
>> >> Think you will be better protected?
>> >> That's like wearin a belt and suspenders
>> >>
>> >
>> > I'm running two firewalls for extra protection. It's fine to
> run two
>> > firewalls, but not two virus scanners and one virus scanner
> will read
>> > the others virus definitions and possibly delete them.
>> > I like to be careful just incase someone cracks through one of
> them, at
>> > least I'm protected that little bit more.
>> >
>> > Do you not recommend this?
>> Personally, when it comes to virii, you need belt, braces,
> suspenders, and
>> super-glue!.
>> There are some viruses, that specifically have been targetted to
> penetrate
>> particular virus scanners. Multiple firewalls is less worthwhile,
> since in
>> general how effective this is is entirely 'down' to how well the
> package
>> is set up. However the XP firewall, is pretty basic, and adding a
> version
>> that offers better configuration, is often a good idea.
>> Virus scanners should be perfectly capable of working without
> interfering
>> with one another. This is down to placing the definition files in
> seperate
>> directories. It is pointless to run two, if they are based on the
> same
>> type of detection algorithm, however systems are available that
>> deliberately 'cascade' multiple testers using different search
>> algorithmns. I use an external commercial scanner on the server,
> and then
>> a seperate system on the PC for exactly this reason.
>
>
> Have you EVER run two virus scanners simultaniously? The speed hit
> is unbelievable. And they are not going to protect you against
> brand new virii that nobody has definitions for.
Actually, some will. These are the so called 'heuristic' scanners, that
can look for resemblances to previous virii, or simply for the same file
arriving at multiple sites on a business network, and flagging it as
suspicious until proven otherwise. These were the bases of the systems
that did stop Melissa the first time round.
The speed hit is down to the power of the machines, and the natures of the
algorithms chosen.
> Now if there were some kind of arrangement where your
> router/gateway could run a virus scanner, and your computer could
> run one, that is something completely different.
>
> There's nothing wrong with two firewalls, except that if something
> isn't working you have to dick with two of them to fix it.
Currently, I am running three virus scanners in the router, and two in the
individual machines, and performance is such that an email arrives less
than 1/10th second after it first reaches the router.
Best Wishes