Penetration Testing mailing list archives

Re: Vulnerability scanners


From: "R. DuFresne" <dufresne () sysinfo com>
Date: Thu, 27 Mar 2003 17:49:29 -0500 (EST)


Of course, also to consider, and it's somewhat refered to below in Jeff's
reply:  Scanning is only the beginning, and provides pointers as to what
needs more attention.  It's certainly not and end and a means to security,
but a point of reference.  Once the scan is done and it's reports
submitted, then the real work begins.  Security staff that merely scans
and hands off a *potential* vuln report are not doing any real work.  It's
what they do after the report has been generated, if anything, that
determines their worth, and the value of the scan in the first place.

Thanks,

Ron DuFresne


On Thu, 27 Mar 2003, Jeff Williams @ Aspect wrote:

Let's assume that you're talking about 256 IPs (based on Qualys' published
pricing), and you want to scan weekly.  That's at least a day a week of
effort for someone (probably more to generate a very nice report and
summaries).  The cost of a full-time sysadmin (including salary, benefits,
office, etc...) probably costs well north of $100K.  You'd have to include
some equipment costs in there.  So I doubt you could do it much cheaper.
I think vulnerability scanning is a reasonable thing to outsource for
companies that are not in the security or networking field already.

Still, the incremental cost of their service must be far less than that.
Obviously they've invested in a significant amount in their scanning
engine and report structure.  And there will be some maintenance and
network costs to consider.  But the cost of adding one more customer
should be fairly small.  If their prices don't start approaching this
incremental cost, then there's an opportunity for someone else to enter
the market and provide the service for cheaper.  Maybe you can push them
on this point.

Whatever you decide, you should also be sure to consider the cost of
interpreting the results and making the changes to fix any problems
uncovered.  Simply having the scan done for you does not relieve you of
the responsibility of going through the findings carefully and keeping
systems hardened.

Please let the list know how this comes out as there are probably many
companies wrestling with this decision now.

--Jeff


Jeff Williams
Aspect Security, Inc.
http://www.aspectsecurity.com


----- Original Message -----
From: Dan Lynch
To: pen-test () securityfocus com
Sent: Wednesday, March 26, 2003 6:46 PM
Subject: Vulnerability scanners


Greetings list,

Yesterday some reps from Qualys came with a sales presentation for
their QualysGuard appliance. I'd like to solicit your comments and
opinions on that product. In particular, do you think it's $45,000 per
year better than Nessus? (That's about the cost we'd face based on our
IP address range.) They claim it costs as much in administration to run
Nessus. Does Qualys' claim to more vulnerability signatures and
faster/easier updates hold water?

Any input you can offer is greatly appreciated.



Dan Lynch
Information Technology Analyst
County of Placer
Auburn, CA

530/889-4222


Bureaucracy: the art of making the possible impossible.


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