Information Security News mailing list archives

Re: Linux snares security tool


From: InfoSec News <isn () c4i org>
Date: Wed, 14 Nov 2001 09:07:49 -0600 (CST)

Forwarded from: "Ejovi B. Nuwere" <ejovi () ejovi net>

From: "Nicole Bellamy" <nicole.bellamy () zdnet com au>
Cc: "George Cora" <george.cora () intersectalliance com>,
   "Leigh Purdie" <Leigh.Purdie () intersectalliance com>

Ejovi.

As promised in my initial e-mail, I have looked into this matter and
spoken with experts who actually have day-to-day experience and
working knowledge of Linux and in particular, Linux security. They
have advised me to rework my article slightly to include reference to
C2-compliance--which is the most distinguishing factor of the new
tool. I have run a proof by them and they are happy with the
amendments, which I will be posting on our site now.

Although I strongly disagree with your personal attacks against me,
that is another matter and one which will be addressed --especially
due to the fact that you have yet to remove or apologise for your
slanderous comments.

As for the infosec news list readers you have approached, please pass
on to them my sincere thanks for their feedback and the notice of my
amendment. It is interesting to note that in a community such as
Linux, which is fighting daily against oppression from proprietary
systems, members of this community would personally and professionally
attack any journalist that gives weight to their fight, and attempts
to expose brilliance in the ranks, rather than mistakes and
vulnerabilities.

It is surprising that such a community is not applauding its members
who are attempting to make a difference rather than shooting down the
messengers.

By the way, if you intend to post this on your site, please feel free
to use the entire e-mail this time, rather than just chosen excerpts.
Also, my comments related to this story are my own, during initial
e-mails and the follow-up since.

Thanks again and regards.

Nicole



----- Original Message -----
From: "Ejovi B. Nuwere" <ejovi () ejovi net>
To: "Leigh Purdie" <Leigh.Purdie () intersectalliance com>
Cc: "Nicole Bellamy" <nicole.bellamy () zdnet com au>; "George Cora"
<george.cora () intersectalliance com>
Sent: Saturday, November 10, 2001 8:14 AM
Subject: Re: No Subject


Thanks for the response Leigh,

As a security professional, you too must admit this article is
misleading. Statements such as "InterSect Alliance says it has
developed the first integrated security auditing and event..."
alone is not true. The first C2 open source compliant product?
Well that may be true. Since there arent many C2 compliant
products out there, commercial or open source.

I'd be willing to give you the benefit of the doubt. But this
article states you are the first host based IDS for linux. Which
is not true. And I've received several responses to my original
email sent to ISN, Internet Security News, all of which agree with
my opinion. So we will have to agree to disagree on this one.

Respectfuly

ejovi


On Fri, Nov 09, 2001 at 03:11:46PM +1100, Leigh Purdie wrote:
G'day Ejovi,

Thanks for the comments below, hopefully I can answer your questions to
your satisfaction.

Many security tools have been available for Linux for a long time now,
often being recompiled from applications developed for generic Unix
systems.

I've been a user of applications like tripwire, tcp wrappers, for a long
time now. I think I first used tripwire in the early 1990s. I often
encounter confusion from people as to the purposes of such tools.

Many people, for example, feel that once a firewall is in place, a
system is protected. You an I both know that it takes a large amount of
network, host, and procedural security controls to make a site truely
secure (and even then, there are still risks!). Just like you wouldn't
call tripwire a firewall, nor is it similar to SNARE.

Tripwire fills a void in security by providing an administrator with
notification when a file is modified/added/changes permissions etc.

LIDS fills another void by implementing mandatory access controls in the
kernel and providing enhanced access control.

However, one thing that Linux has been lacking for a long time now, is
the "C2 style" user auditing capability. This is the role that SNARE
fills. Many other operating systems, such as NT or Solaris, incorporate
this feature, and many government departments refuse to install Linux,
because there is no auditing capability.

Having worked in an organisation like the Defence Signals Directorate
(very much like the US National Security Agency (NSA)), I know the
importance of security standards, and the reluctance of government to
install hardware or software that does not meet certain standards.
Hopefully, SNARE is a step in the direction of ensuring Linux meets
those standards, and is able to be used more by government agencies, and
large organisations that need to meet government standards.

ZDNet seem to me, to be a very careful and capable news agency that are
committed to correctly and accurately reporting a story. Nicole made
sure that she undertook a comprehensive interview before releasing the
story, and although no reporter can report verbatim what was discussed,
I think the story is a fair and accurate reflection of SNARE's role in
Linux.

As such, if you believe that SNARE is of poor quality for an open source
release, or you feel as though the capabilities are overstated, then
please feel free to discuss it with us further. Drop me or George an
email, or call us on the number available from the contact page.
However, I don't think it's appropriate to accuse ZDNet of anything
untoward.

Some comments we have received from other users relating to SNARE might
assist in reassuring you that the story was accurate:

Daniel Swan, maintainer of the comp.os.linux.security frequently asked
questions document:
"Leigh, this looks quite impressive.  I will be happy to include it in
the FAQ.   I will be releasing another version in a couple of weeks, so
look for your product's inclusion then. I also look forward to trying it
out myself."

Martin Heerling, germany:
"First I want to congratulate to snare - I was quite amazed about it.
I like the "Objectives" approach with specifying patterns or regexps.
That's definately cool."

GuardianDigital, sellers of the Engarde linux distribution:
"This is very interesting. .. Perhaps you'd be interested in working
together in some capacity."

Lance, USA:
"Hello,
This has got to be one of the most awesome utilities (SNARE) I've seen
in Linux yet.  Congratulations on the GREAT work done by you guys.  So
much information given, wow...what an improvement over other logging
utilities...."

From a government source:
"Truth be told, SNARE looks like it could possibly overcome the last
major hurdle to the 'legal' adoption of Linux in the U.S.
military/government structure.  While it's already endemic throughout
the Department of Defense, there is a bit of a backlash coming due to
the number of incidents coming in, and the lack of hard auditing data
to help track down the miscreants."

Regards,

Leigh.


On Fri, 2001-11-09 at 09:57, Ejovi B. Nuwere wrote:
Bcc:
Subject: Re: [ISN] Linux snares security tool
Reply-To:
In-Reply-To: <00d301c168a8$f92c29a0$b2e90ccb () zdnet com au>; from
nicole.bellamy () zdnet com au on Fri, Nov 09, 2001 at 09:59:08AM +1100

Leigh Purdie, please tell me how your product differs from
LIDS.


On Fri, Nov 09, 2001 at 09:59:08AM +1100, Nicole Bellamy wrote:
Hi Ejovi.

Thank you for your comments. ZDNet Australia values any feedback,
especially
when it relates to editorial quality, and/or accuracy. I have copied
in
Leigh Purdie, the CEO you mentioned, and an expert in Linux
security.

I consulted Linux 'experts' before going to print to check the
accuracy of
the article, which they did, and I am satisfied with responses I
received.

ZDNet Australia strives to provide an impartial, balanced view of
news in
the IT industry. As such, it is important to report on new
developments.
Often these are not controversial, and may seem to be complimentary
to the
company producing the technologies, this is not intended, nor
compensated in
any way. I personally have no affiliation with the company
mentioned, nor
the staff within it.

However, I appreciate your comments and will endeavour to ensure the
validity of them. As we speak, I have contacted various Aust Linux
personalities to advise me on the accuracy of the claims you have
made. I am
sure you can understand the need to check facts and claims.

Thanks again for your e-mail. Perhaps next time you have comments to
make
you could give me a call directly, and ascertain the accuracy of
your
comments.

I hope I have assisted in whatever it is you hoped to achieve with
this
e-mail.

Thanks and regards


________________________________________________
Nicole Bellamy
News & Technology Producer
ZDNet Australia, a CNET Networks Company
PO Box 670  BROADWAY NSW 2007
Tel: +61 2 8514 9943   Fax: +61 2 9960 2953
http://www.zdnet.com.au  http://www.gamespot.com.au
_________________________________________________





----- Original Message -----
From: "Ejovi B. Nuwere" <ejovi () ejovi net>
To: "InfoSec News" <isn () c4i org>
Cc: <nicole.bellamy () zdnet com au>
Sent: Friday, November 09, 2001 7:20 AM
Subject: Re: [ISN] Linux snares security tool


Dear Nicole,

Is this an article or jibberish? Jibberish or a press release
poorly cloaked as a article? What exactly do you mean by
intergrated?
Are you saying that all the major Linux distrubutions will include
this
as part of their base system install?

Or are you saying that it works on Linux? I'm confused. I suspect
you
are too. Why did you not research the subject, if you had you
would have
found tripwire (http://www.tripwire.org/) which has been around
and
widely used for almost 10 years.

What about quoting experts other then the company CEO? Either
you've
been had, or need a refresher course in journlistic intergrity.

Your friend,
ejovi


On Wed, Nov 07, 2001 at 03:35:07AM -0600, InfoSec News wrote:
http://www.zdnet.com/zdnn/stories/news/0,4586,2822782,00.html

By Nicole Bellamy
ZDNet Australia
November 6, 2001 5:46 PM PT

InterSect Alliance says it has developed the first integrated
security
auditing and event logging subsystem for the open source Linux
operating system, beating much larger organizations to the
punch.

Its new tool, Snare (System iNtrusion Analysis and Reporting
Environment) has been developed with a goal of reducing the cost
of
entry into system auditing and host-based intrusion detection
for
system managers, simplifying the process of configuration,
reducing
resource requirements and providing meaningful reporting to
end-users.

According to Leigh Purdie, director and principal security
consultant,
this is the first release of code for a host-based intrusion
detection
system, although there have been inroads made into the
development of
source code to address network-based intrusion detection.

The two systems differ in that while a network-based intrusion
detection tool enables the user to determine when an intrusion
is
being attempted, the host-based system allows the user to
identify
when an intrusion has been successful.

Purdie believes that the lack of the Snare code has hindered the
adoption of Linux into widespread use by organizations in
Australia.
By releasing Snare as open-source software, he hopes this will
"set
Linux on the path towards acceptance by organizations."

The Snare auditing subsystem is designed to "enhance an
organizations
ability to detect suspicious activity by monitoring system and
user
actions", as stated in its release report.

Given the current debate surrounding staff-monitoring, Purdie
was
quick to point out that InterSect Alliance is not responsible,
nor
accountable for, any privacy infringements occuring as a result
of
organizations using this system. However, the company does
intend to
provide privacy recommendations to organizations as a part of
its
training on the product.

"Privacy is critical in a lot of institutions. When we provide
solutions we recommend one of the things they (organizations)
implement is staff contact; to let staff know what is happening,
why
it's happening, what data is being used for," said Purdie.

Snare fills Linux security void

The lack of integrated security features--perceived or
actual--has
long been a barrier to widespread Linux adoption.

According to an InterSect Alliance report, "the lack of
host-based
intrusion detection in the form of an auditing system, has been
cited
in the past by organizations as a significant contributor to the
decision to choose alternative operating systems over Linux in
operational roles."

InterSect Alliance decided to pursue the Snare project as a
means of
addressing this shortcoming and therefore boost Linux' appeal.

While working on similar tools for other operating systems, such
as
Sun's Solaris and Microsoft's Windows NT--all of which contained
an
audit collection subsystem--the company realized the lack of
this
feature in Linux, and "thought something was missing," according
to
Purdie.

What followed was eight months of effort and "not having a
life", said
George Cora, director and principal security consultant.

While eight months seems minimal in software development terms,
Purdie
maintains that Snare is actually the culmination of ten year's
work
into the host-based intrusion detection system, added to a
combined
total of more than twenty year's experience in security for the
directors.

The short time to market can also be attributed to three other
factors, according to Cora: "We have the programming skills, we
have a
small company that is not bureaucratic, and we put aside the
established OSes (operating systems) and started from scratch."

He also maintains that the presence of the open-source community
allowed them a shorter development time.

InterSect Alliance does not have the infrastructure in place to
distribute Snare commercially, but by using the open-source
community,
it was able to release the software quickly, to a widespread
audience.

Cora believes that releasing Snare as open source should also
lead to
a faster uptake of the product itself.

"If we had tried to commercialize this [rather than releasing as
open-source software], people would be less eager to use it due
to the
cost of entry associated with it," Cora said.

This lowered cost of entry is the ingredient that will ensure
much of
the product's success. Already InterSect Alliance has received
pre-release queries from local--and global--organizations.



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ejovi nuwere
http://www.ejovi.net


ejovi nuwere
http://www.ejovi.net
--
Leigh Purdie, Director - InterSect Alliance Pty Ltd
http://www.intersectalliance.com/


ejovi nuwere
http://www.ejovi.net

----- End forwarded message -----


ejovi nuwere
http://www.ejovi.net

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