Re: [gentoo-user] Virus protection for Evolution users

2004-01-29 Thread Guy Van Sanden
This will only check incoming messages, and I have not tested this setup
personally.

Download and install clamav and set up automatic signature updating.

Create a folder 'virus' or something in evolution, now set up a filter
like is adviced for spamassasin at
http://www.atlantawebhost.com/articles/evolution_spamassassin.php

Replace the spamassasin command with clamscan --mbox.

Now if a virus is found, Evolution will move the message to the virus
folder...  you can run clamscan again on the mbox file in the evolution
subdirectory to identify the virus.

On Thu, 2004-01-29 at 04:06, Mark Knecht wrote:
 On Wed, 2004-01-28 at 16:12, Manuel McLure wrote:
 
  Have you tried amavis? It hooks into the postfix delivery chain, and 
  will recursively extract all files from archives and check them for 
  viruses using the antivirus of your choice. So you can be sent a virused 
  exe inside a zip inside an lha inside an arc and it will still catch it.
  
 
 No, here on my desktop I don't run postfix. We just have that at work. I
 was looking for a solution that would just work with Evolution, like
 Norton works with Outlook. Do I really need to run a server to get local
 virus protection? Bummer...
 
 
 
 
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Re: [gentoo-user] Virus protection for Evolution users

2004-01-29 Thread Andrej Kacian
On Wed, 28 Jan 2004 07:41:51 -0800
Mark Knecht [EMAIL PROTECTED] wrote:

 Mike,
It's in the attachment. Conceptually I receive an email with an
 attachment that has a virus. It doesn't bother me, but I forward the email
 to someone else and they get infected via the attachment.
 
Am I missing something? Seems possible to me...

I thought common sense would tell you to delete the attachment when you know
it's not related to the email. Why waste bandwidth?

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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Mike Williams
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Hash: SHA1

On Wednesday 28 January 2004 15:29, Mark Knecht wrote:
 Hi,
Although I'm not going to be personally infected by this new Windows
 worm, it would be nice not to forward it on to others and have them mad at
 me for the fact they use Windows. What package should I look at emerging to
 add virus protection to Evolution?

Why would you forward the virus onto anyone, when you are immune?

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Mike Williams
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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread David Gethings
On Wed, 2004-01-28 at 15:32, Mike Williams wrote:
 Why would you forward the virus onto anyone, when you are immune?
I think he meant that if he got an email with the virus and then
forwarded that email - and its attachment - onto a Windows user. Rather
than have the worm spread by itself.

Now why you would *ever* do this is beyond me. 

To answers the posters original question: I am personally not aware of
any AV software for Linux. I would presume there are none for the above
reasons.

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RE: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Mark Knecht
 On Wednesday 28 January 2004 15:29, Mark Knecht wrote:
  Hi,
 Although I'm not going to be personally infected by this new Windows
  worm, it would be nice not to forward it on to others and have
 them mad at
  me for the fact they use Windows. What package should I look at
 emerging to
  add virus protection to Evolution?

 Why would you forward the virus onto anyone, when you are immune?

Mike,
   It's in the attachment. Conceptually I receive an email with an
attachment that has a virus. It doesn't bother me, but I forward the email
to someone else and they get infected via the attachment.

   Am I missing something? Seems possible to me...

Thanks,
Mark



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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Peter Ruskin
On Wednesday 28 Jan 2004 13:20, David Gethings wrote:
 To answers the posters original question: I am personally not aware
 of any AV software for Linux. I would presume there are none for the
 above reasons.

clamav.  It's in portage.

Peter
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RE: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Mark Knecht


 -Original Message-
 From: David Gethings [mailto:[EMAIL PROTECTED]
 Sent: Wednesday, January 28, 2004 5:21 AM
 To: [EMAIL PROTECTED]
 Subject: Re: [gentoo-user] Virus protection for Evolution users


 On Wed, 2004-01-28 at 15:32, Mike Williams wrote:
  Why would you forward the virus onto anyone, when you are immune?
 I think he meant that if he got an email with the virus and then
 forwarded that email - and its attachment - onto a Windows user. Rather
 than have the worm spread by itself.

 Now why you would *ever* do this is beyond me.

 To answers the posters original question: I am personally not aware of
 any AV software for Linux. I would presume there are none for the above
 reasons.


Hi,
   This was exactly the scenario. This new worm can be embedded in a zip
file. Simple Postfix attachment filters don't reject it. I'm typing this on
a Windows/Outlook machine with Norton Antivirus that has received something
like 15 of these attachments just this morning. Norton catches them so no
big deal. However, on my Linux box maybe I don't open the zip file, but for
one reason or another, today or some day in the future, I forward the email
to someone else. They get infected since they run Windows.

   Granted, it's their fault they got infected at all, but I can do the
world a little favor by not forwarding this things, right?

   I see another email just arrived saying clamav. Thanks to Peter for that.
There's also one called Kaminski or something like that for Linux, but
that's for money.

   Anyway, thanks for the ideas.

Cheers,
Mark





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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread patrick . marquetecken
snip
 Hi,
This was exactly the scenario. This new worm can be embedded in a zip
 file. Simple Postfix attachment filters don't reject it. 
/snip

I disagree, postfix can stop those attachments, if you got a
/etc/postfix/mime_header_checks.regexp

and it contains this rule
/filename=\?(.*)\.(bat|chm|cmd|com|do|exe|hta|jse|rm|scr|pif|vbe|vbs|vxd|xl)\?$/
   REJECT For security reasons we reject attachments of this type
/^\s*Content-(Disposition|Type).*name\s*=\s*?(.+\.(lnk|asd|hlp|ocx|zip|reg|bat|c[ho]m|cmd|exe|dll|vxd|pif|scr|hta|jse?|sh[mbs]|vb[esx]|ws[fh]|wav|mov|wmf|xl))?\s*$/
   REJECT Attachment type not allowed. File $2 has the unacceptable extension $3
   
they won't come true.
and change REJECT in to DROP

Patrick

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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Eric G Ortego


David Gethings wrote:

I am personally not aware of
any AV software for Linux. I would presume there are none for the above
reasons.
 

f-prot is a virus scanning package for linux that is in portage.
Also several mta's have the ability to do attachment filtering, one 
mta-proxy I like is messagewall, it can easly do virus scanning with 
clamav or f-prot, dns blacklist lookups, and other spam prevention type 
handleing before your favorite mta even sees the message.



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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Mark Knecht
On Wed, 2004-01-28 at 09:56, [EMAIL PROTECTED] wrote:
 snip
  Hi,
 This was exactly the scenario. This new worm can be embedded in a zip
  file. Simple Postfix attachment filters don't reject it. 
 /snip
 
 I disagree, postfix can stop those attachments, if you got a
 /etc/postfix/mime_header_checks.regexp
 
 and it contains this rule
 /filename=\?(.*)\.(bat|chm|cmd|com|do|exe|hta|jse|rm|scr|pif|vbe|vbs|vxd|xl)\?$/
REJECT For security reasons we reject attachments of this type
 /^\s*Content-(Disposition|Type).*name\s*=\s*?(.+\.(lnk|asd|hlp|ocx|zip|reg|bat|c[ho]m|cmd|exe|dll|vxd|pif|scr|hta|jse?|sh[mbs]|vb[esx]|ws[fh]|wav|mov|wmf|xl))?\s*$/
REJECT Attachment type not allowed. File $2 has the unacceptable extension $3

 they won't come true.
 and change REJECT in to DROP
 
 Patrick

Patrick,
   That's not the point, or at least my point. I don't want to reject
ALL zip files. I only want to reject zip files that have a virus
embedded in them. Please remember the problem I'm trying to address.
Someone sends me a virus infected file inside a zip, which is what has
been happening for the last few days. Zip files have value. I should
accept zip, and even zip with an exe in it, as long as they are not
infected. That requires virus protection TTBOMK.

Thanks,
Mark


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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Manuel McLure
Mark Knecht wrote:

On Wed, 2004-01-28 at 09:56, [EMAIL PROTECTED] wrote:

snip

Hi,
  This was exactly the scenario. This new worm can be embedded in a zip
file. Simple Postfix attachment filters don't reject it. 
/snip

I disagree, postfix can stop those attachments, if you got a
/etc/postfix/mime_header_checks.regexp
and it contains this rule
/filename=\?(.*)\.(bat|chm|cmd|com|do|exe|hta|jse|rm|scr|pif|vbe|vbs|vxd|xl)\?$/
  REJECT For security reasons we reject attachments of this type
/^\s*Content-(Disposition|Type).*name\s*=\s*?(.+\.(lnk|asd|hlp|ocx|zip|reg|bat|c[ho]m|cmd|exe|dll|vxd|pif|scr|hta|jse?|sh[mbs]|vb[esx]|ws[fh]|wav|mov|wmf|xl))?\s*$/
  REJECT Attachment type not allowed. File $2 has the unacceptable extension $3
  
they won't come true.
and change REJECT in to DROP

Patrick


Patrick,
   That's not the point, or at least my point. I don't want to reject
ALL zip files. I only want to reject zip files that have a virus
embedded in them. Please remember the problem I'm trying to address.
Someone sends me a virus infected file inside a zip, which is what has
been happening for the last few days. Zip files have value. I should
accept zip, and even zip with an exe in it, as long as they are not
infected. That requires virus protection TTBOMK.
Have you tried amavis? It hooks into the postfix delivery chain, and 
will recursively extract all files from archives and check them for 
viruses using the antivirus of your choice. So you can be sent a virused 
exe inside a zip inside an lha inside an arc and it will still catch it.

--
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no man may kill a cat.   -- H.P. Lovecraft
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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread lukas
On Thursday 29 January 2004 04:06, Mark Knecht wrote:

 work. I was looking for a solution that would just work with
 Evolution, like Norton works with Outlook. Do I really need to run a
 server to get local virus protection? Bummer...

I don't know any solution that can do that (but maybe there is one?).
I have an MTA (sendmail) running, fetching my mail with fetchmail
and uses amavis.
I don't know if evolution has the ability to pipe the mail through an
external program (kmail can do so). Then it is maybe possible to pipe
the mail through amavis (but I've never tested this).

cu

lukas

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Re: [gentoo-user] Virus protection for Evolution users

2004-01-28 Thread Nicholas Hockey




http://pop3vscan.sourceforge.net/
dunno about any imap ones.

On Wed, 2004-01-28 at 22:24, lukas wrote:

On Thursday 29 January 2004 04:06, Mark Knecht wrote:

 work. I was looking for a solution that would just work with
 Evolution, like Norton works with Outlook. Do I really need to run a
 server to get local virus protection? Bummer...

I don't know any solution that can do that (but maybe there is one?).
I have an MTA (sendmail) running, fetching my mail with fetchmail
and uses amavis.
I don't know if evolution has the ability to pipe the mail through an
external program (kmail can do so). Then it is maybe possible to pipe
the mail through amavis (but I've never tested this).

cu

lukas




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