<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; "><div>Also: I ran into this =
links related ot real time scanning on windows using =
ClamAV.</div><div><br></div><div>How to Enable Real Time Virus Scanning =
for ClamAV</div><div><a =
href="http://www.techmalaya.com/2008/05/10/clamav-real-time-scan/">http:=
//www.techmalaya.com/2008/05/10/clamav-real-time-scan/</a></div><div><br><=
/div><div>But -- this is really off-topic for our group ? right ? =
:)</div><div><br></div><br><div><div>On Sep 29, 2008, at 10:02 AM, =
David Hinkle wrote:</div><br =
class="Apple-interchange-newline"><blockquote type="cite"> <div> =
<!-- Converted from text/plain format --><p><font size="2">Unfortunately=
what actually prevents a real time anti-virus engine for windows from =
being released to the wild under the GPL is that fact that in order to =
write such an engine, a person needs Microsoft's specialized dev kit for =
interfacing with the hard drive device layer. Such device drivers =
are called file system filters or minifilters. This dev kit is =
only offered under terms that are very hostile to anybody releasing a =
GPL real time anti-virus engine. I don't think anybody with the =
wherewithal to write such an engine has had the guts to test Microsoft =
in court.<br> <br> What we did, was to write a standalone application =
called a "minifilter" that is loaded like a device driver. Another =
standalone application that is a tray client and user =
interface. Then I ported the clamav engine to windows and =
turned it into a service that accepts requests to scan over a named =
pipe. The source code for the clamav port is available, of course, =
but the other two applications are proprietary. I am =
actually going to propose to my company that we open source this =
project, but the decision is not mine alone.<br> <br> Before we wrote =
this, we actually tried working with clamwin project instead. I =
offered to work with them on the port and they accepted my offer but =
then they just strung me along for months without giving me access to =
their repositories. We couldn't afford to wait for them so we had =
to develop our own, which was a very expensive and time consuming =
project, as you may imagine.<br> <br> David<br> <br> -----Original =
Message-----<br> From: <a =
href="mailto:qclug-bounces@qclug.org">qclug-bounces@qclug.org</a> on =
behalf of Aaron Johnson<br> Sent: Mon 9/29/2008 7:59 AM<br> To: <a =
href="mailto:qclug@qclug.org">qclug@qclug.org</a><br> Subject: RE: =
[QCLUG] QCLUG<br> <br> I noticed that your appliance (CIPAFilter) uses a =
real-time antivirus client<br> based on the open source ClamAV =
engine.<br> <br> Does DerbyTech contribute to the ClamWin project at =
all? I know one thing<br> that ClamWin has been talking about for a LONG =
time is developing an<br> on-access real-time scanning function...<br> =
<br> -----Original Message-----<br> From: <a =
href="mailto:qclug-bounces@qclug.org">qclug-bounces@qclug.org</a> [<a =
href="mailto:qclug-bounces@qclug.org">mailto:qclug-bounces@qclug.org</a>=
] On Behalf Of<br> David Hinkle<br> Sent: Monday, September 29, 2008 =
12:46 AM<br> To: <a =
href="mailto:qclug@qclug.org">qclug@qclug.org</a><br> Subject: RE: =
[QCLUG] QCLUG<br> <br> CIPAFilter uses a lot of open source for our =
basic functionality, such as<br> firewall, routing, NAT, etc... We use =
Ubunto Linux for the OS. We do use<br> ClamAv, but not freeswan or =
squid. (We did use freeswan in the past). <br> <br> However, our =
core features (such as the proxy, reporting, greylisting), are<br> =
implemented with proprietary non-gpl software we developed. We =
also use<br> spamassassin and sendmail in conjunction with a proprietary =
milter we<br> developed for our mail features and to implement some =
extensions to SPF,<br> greylisting and some additional header =
analysis. <br> <br> There's no download link, but of course our =
customers can request any GPL<br> software from us that we distribute =
with our product. In some cases third<br> parties can also make =
requests from us, but you need to be in possession of<br> the binaries =
and request a specific software package used in the product by<br> name. =
(See GPLv3 6-b).<br> <br> We're very careful about licensing, none of =
our proprietary software is<br> linked with GPL binaries or libraries, =
and as a company we focus on the<br> development of our proprietary =
software. Linux is a platform for us, not an<br> end to =
itself. It does, however, make an excellent platform.<br> <br> But =
all that being said, we also believe in being in compliance with the<br> =
spirit of the GPL. For example, if someone wants the source for a =
GPL<br> package I've actually modified I'll be happy to provide it via =
email at no<br> charge, and I don't much care if they're a =
customer or not. But you'd have<br> to tell me what package you =
want the source for.<br> <br> David<br> <br> <br> -----Original =
Message-----<br> From: <a =
href="mailto:qclug-bounces@qclug.org">qclug-bounces@qclug.org</a> on =
behalf of Dave Bergert<br> Sent: Sun 9/28/2008 10:41 PM<br> To: <a =
href="mailto:qclug@qclug.org">qclug@qclug.org</a><br> Subject: Re: =
[QCLUG] QCLUG<br> <br> Welcome, the list have been quite of late.<br> =
<br> I was looking at CIPAFiler .. It appears that CIPAFilter uses =
some <br> GPL'ed open source projects, e..g FreeSwan, ClamAV, =
squid. -- do you <br> have a link to download the source of =
CIPAFilter ? I'm interested in <br> learning more about =
it.<br> <br> Regards.<br> <br> <br> On Sep 28, 2008, at 9:23 PM, David =
Hinkle wrote:<br> <br> ><br> > Active? Alive? What's your =
status. I'm David Hinkle, Sr. <br> > Programmer for =
CIPAFilter. CIPAFilter is a Quad Cities company that <br> > =
specializes in products using embedded linux. I'm interested =
in <br> > becoming involved with the LUG.<br> ><br> > David<br> =
><br> <br> <br> <br> <br> No virus found in this incoming message.<br> =
Checked by AVG - <a href="http://www.avg.com">http://www.avg.com</a><br>=
Version: 8.0.169 / Virus Database: 270.7.4/1695 - Release Date: =
9/27/2008<br> 1:11 PM<br> <br> =
_______________________________________________<br> QCLUG mailing =
list<br> <a href="mailto:QCLUG@qclug.org">QCLUG@qclug.org</a><br> <a =
href="http://qclug.org/mailman/listinfo/qclug">http://qclug.org/mailman/=
listinfo/qclug</a><br> <br> </font> </p> </div> =
</blockquote></div><br><div apple-content-edited="true"> <span =
class="Apple-style-span" style="border-collapse: separate; color: =
rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: auto; text-indent: =
0px; text-transform: none; white-space: normal; widows: 2; word-spacing: =
0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><div>Dave Bergert</div><div><a =
href="mailto:dbergert@gmail.com">dbergert@gmail.com</a></div><div><br =
class="webkit-block-placeholder"></div></div></span><br =
class="Apple-interchange-newline"> </div><br></body></html>=