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mrezzonico
12-Dec-2014, 12:28
Hallo,

ich habe clamav installiert.

Mit clamdscan habe ich 4000 infected Dateien getestet.
3000 sind als "infected" markiert
1000 sind "OK" markiert

Database is up-to-date.

Ist das ergebnis akzeptabel ?

Vielen Dank euer Hilfe.

Grüsse
Miche

malcolmlewis
12-Dec-2014, 17:25
Hi
These are primarily English forums ;)

So I'm assuming these are windows based files you are using to clamav to scan?

Incoming mail?

mrezzonico
12-Dec-2014, 18:43
Hi Malcolm,
sorry if I wrote in German ...
I am migrating from antivir to clamav.
The 4000 files are emails (probably with windows virus) blocked by antivir.
The problem is that for clamdscan 1000 of 4000 files are "OK".

Regards
Michelangelo

malcolmlewis
12-Dec-2014, 20:01
On Fri 12 Dec 2014 05:44:02 PM CST, mrezzonico wrote:


Hi Malcolm,
sorry if I wrote in German ...
I am migrating from antivir to clamav.
The 5000 files are emails (probably with windows virus) blocked by
antivir.
The problem is that for clamdscan 1000 of 5000 files are "OK".

Regards
Michelangelo




Hi
Have you looked at any of the emails that passed clamav to see what
they contain? Maybe some sort of rule that was added in antivir that
caused them to be quarantined?

--
Cheers Malcolm °¿° LFCS, SUSE Knowledge Partner (Linux Counter #276890)
SUSE Linux Enterprise Desktop 12 GNOME 3.10.1 Kernel 3.12.28-4-default
If you find this post helpful and are logged into the web interface,
please show your appreciation and click on the star below... Thanks!

Massimo Rosen
14-Dec-2014, 13:13
Am 12.12.2014 18:44, schrieb mrezzonico:
>
> Hi Malcolm,
> sorry if I wrote in German ...
> I am migrating from antivir to clamav.
> The 5000 files are emails (probably with windows virus) blocked by
> antivir.
> The problem is that for clamdscan 1000 of 5000 files are "OK".

Quite frankly: Clamav is generally not regarded as a useable AV
solution. Precisely for what you just found, it's detection rate is
*WAY* worse than any commercial AV (and soem of those are really bad too).

CU,
--
Massimo Rosen
Novell Knowledge Partner
No emails please!
http://www.cfc-it.de

mrezzonico
16-Dec-2014, 14:17
Hi Malcolm,

thanks for your suggestion.
Not sure but it seems me that the files I used are not changed by antivir.

In the meantime I have found the following site where I can test my files:
www.virustotal.com
... and I can see if a virus is recongnised by clamav.
At least now I am sure that there is not an installation problem (database not up-to-date, ...)

I have also installed ClamWin (the window version of clamav).
I have tested some files and I have the same results as clamav installed on my linux server.

Does someone have a better alternative to clamav (for linux) ?

Regards.
Miche

mrezzonico
16-Dec-2014, 14:29
Hi Massimo,

thanks for your answer.

Do you know a valid (opensource) AV alternative for linux ?

Regards.
Miche

Massimo Rosen
17-Dec-2014, 13:52
Am 16.12.2014 14:34, schrieb mrezzonico:
>
> Hi Massimo,
>
> thanks for your answer.
>
> Do you know a valid (opensource) AV alternative for linux ?

No such thing exists I'm afraid.

CU,
--
Massimo Rosen
Novell Knowledge Partner
No emails please!
http://www.cfc-it.de

mrezzonico
17-Dec-2014, 14:20
Hi Massimo,

thanks for your answer.

May I ask you if you know a good commercial solution for a SLES mailserver ?
In the past I used antivir but now is no longer supported.

Thanks again.

Miche

Massimo Rosen
17-Dec-2014, 15:12
Am 17.12.2014 14:24, schrieb mrezzonico:
>
> Hi Massimo,
>
> thanks for your answer.
>
> May I ask you if you know a good commercial solution for a SLES
> mailserver ?

Shouldn't that mostly depend on the mailserver and what products
interface properly with it? For instance, as I'm doing almost
exclusively Groupwise, I use Gwava for that.

Other than that, I hear the least bad from Kaspersky. Frankly, I don't
think there's any really "good" Av solution. Just a less bad than others.


CU,
--
Massimo Rosen
Novell Knowledge Partner
No emails please!
http://www.cfc-it.de

mrezzonico
17-Dec-2014, 15:21
Hi Massimo,

thanks again.

Magic31
17-Dec-2014, 19:00
..
Other than that, I hear the least bad from Kaspersky. Frankly, I don't
think there's any really "good" Av solution. Just a less bad than others.


I've also had good experiences with Sophos.


As for "free" alternative, AVG for Linux might be an option : http://free.avg.com/download-free-all-product

Curious to hear how you go!

Cheers,
Willem

mrezzonico
17-Dec-2014, 20:40
Hi Willem,

thanks for the link !

Here some words about my configuration ...
I have a sendmail server in the DMZ that forward emails to our groupware installed in the internal network.
Antivirus (Antivir) and Antispam (SpamAssassin) are installed on the sendmail server (in the DMZ).
On our windows clients we also have an antivirus (Norton), so the antivirus in the DMZ is one of the two antivirus installed in our network.
With this configuration the groupware solution is independent from the Antivirus and Antispam solution and I am also flexibel (in the DMZ now I use sendmail but I can also migrate to postfix without modifying the groupware).

I saw that AVG has a milter sendmail interface !
Now I am trying clamav.
After that I will try AVG.

Thanks a lot !

Regards.
Miche