Tuesday, September 17, 2002

SecurityFocus Article on EAS

Gotta love the FCC.

"Insecurity Plagues Emergency Alert System"
http://online.securityfocus.com/news/613

"Though it's not known to have ever been exploited,
the spoofing risk is one of the factors quietly
driving calls to reform the EAS"

Network World: "Spam filters revealing their darker side"

Last week's "Network World" has an interesting article (excerpts below) on the perils of keyword filters.

In our spam-filtering evaluation, we are taking the majority of the steps (and implementing all of the precautions) noted in the sidebar, with the exception of using IP-based "blacklists" to reject or otherwise limit incoming messages, based on the source IP address. I have tried using lists of "known spam sources" from free or commercial "RBL" services, but have not found any such blacklists that find the right balance between effectiveness and excessive false-positives.


"Spam filters revealing their darker side"
http://www.nwfusion.com/news/2002/0909spam.html

Monday, September 9, 2002

Wireless Network auditing tool

The "netstumbler" (Wireless network discovery for Orinoco) executable is attached, or can be downloaded from http://www.stumbler.net/


I have a small GPS receiver (no display, uses serial port with power from PS/2 keyboard port), if we want to do mapping around the perimeter of the main plant

A few months ago, I drove around the public roads (outside the Company property line) and found many distinct wireless networks, mostly from apartments nearby, however two appeared to be part of the main plant deployment (need to check MACs to be sure).

Saturday, August 24, 2002

policy on generic accounts?

We are in the final process of reviewing an update to the policy addressing exactly these concerns -- "generic" shared "role" accounts, service accounts, and automated processes. I have authored an amendment based on feedback from the network managers, IS Audit, and our CSO.


Our manager has received the policy for review.


The long-term solution is the implementation of mechanisms (such as single-sign on, "sudo" on Unix, and group permissions) to remove the necessity to share passwords. We realize that many of these approaches are not feasible in the current budget environment, and the password policy reflects this.


Regarding "role" accounts shared by multiple users, one of the most important requirements in the updated policy is that these passwords be changed every time an employee or contractor who had access to the password leaves (including external contractors after end of contract or when they leave employment with the contract firm, whichever comes first).


Would this "termination clause" in the new policy (over and above the standard change interval) pose an issue for your applications?


Kevin

Wednesday, June 19, 2002

IT Sec Spending Ratios

Little luck so far finding a ratio. Well, there is a Gartner report that they want $5K for that might have that figure...

http://www3.gartner.com/1_researchanalysis/focus/security2002.html

And I found these:

  • http://www.computerworld.com/securitytopics/security/story/0,10801,62002,00.html
  • http://www.landfield.com/isn/mail-archive/2001/Jun/0051.html


This is interesting:

Only 0.4% of a company’s revenue, on average, is dedicated to information security in the U.S. By 2011, however, that figure will accelerate tenfold to 4% of revenue for U.S. companies, according to Gartner Inc.’s total cost of ownership model for information security.

Monday, June 10, 2002

AT&T Managed Instant Messenger

The AT&T MIM offering appears to be a managed Jabber server, hosted on an AT&T server in their Internet facility, using an AT&T branded version of the commercial JIM client.

The AT&T pricing appears reasonable (compared to the software license quotes we have from Jabber). The AT&T offering appears to be for a "virtual server", where different customers share not only the same hardware, but also the same Jabber server instance. This presents security and performance issues.

Many of the key benefits of corporate IM are derived from hosting the messaging server(s) in-house (LDAP integration, security, reliability, etc). Outsourced IM service hosted on the Internet negates many of these benefits.

Monday, June 3, 2002

Adtran "sbox" vs Check Point SMB

We have not received the Adtran unit for evaluation. This week I am finishing evaluation of PIX, Nortel, and two AT&T products (one of which we have proven to have serious security exposures), and we need to make our decision very soon.

We have serious qualms about the security of any Check Point product, but we realize that a SOHO box is not going to provide "perfect" security. It appears that the Safe@Office is the minimum configuration for our purposes.

Thursday, May 30, 2002

Help -- Problems with new TrackerPod

I just received my TrackerPod+Camera last week, and have a problem with the TrackerPod ceasing function intermittantly. The QuickCam Pro 3000 works great. (Odd that the standard Logitech base/stand was not included?)


I followed the directions to install the TrackerCam 3.01 software from CD and all the drivers to a Windows 2000 machine, start up the software, and it works, for about two minutes. Then the TrackerPod stops Tracking or moving at all, and every click on the movement buttons brings up a new IE window showing the flash demo -- VERY annoying, pops up several windows at once!


So I exit and re-run TrackerCam, and this time it reports an error at startup,a popup stating "TrackerPod not found!".


Reboot, and the cycle repeats, everything works for the first two minutes, then the 'pod stops functioning but the camera keeps going fine. Reboot again, and the pod doesn't work at all this time. Or sometimes it will work for a second (move slightly) then stop.


This is on a Toshiba Tecra laptop with two built-in USB ports, the TrackerPod and camera are the only devices connected to the two ports, using the supplied cable for the TrackerPod. When the 'pod stops working, both the built-in info page in the TrackerCam software and the system settings page show the second USB port as unused, nothing connected, 500ma used by the camera and 500ma available for additional USB hardware.


Lastly, I tried using a powered hub, thinking that the TrackerPod was drawing more than the rated 500ma. This works just a bit better, with the Trackerpod being able to pan/tilt a few degrees, then stop. But it does not resolve the problem.

Monday, May 20, 2002

Strange video noise with "Quickcam Pro USB" and TrackerCam 3.01?

We have a QuickCam Pro (older model), attached to an IBM Netfinity server
with built-in S3 video card.


The camera works in all modes including 640x480, with the software from
Logitech, and with third-party software from other vendors, with no "noise".
Under TrackerCam 3.0 or 3.01, the display always has "noise". The noise does
not appear in saved frames, only on the display.


If set to size "2" (176x144), there is a small white horizontal stripe on
right side of one of the first scan lines. At size 3 and above, there is
continuous video noise throughout the displayed image, primarily seen as two
fast-moving vertical stripes of video "noise", in the center and far-right
side of the displayed video window.


The PC is an IBM Netfinity with only the on-board S3 (Trio3D) video card.
Is this "noise" an expected effect of using the on-board video card in this
PC?

Thursday, May 16, 2002

Network Monitoring Tools

Realtime monitoring is a particularly difficult application to implement, many monitoring products themselves can have a detrimental effect on the systems being monitored. This is one reason that WAN monitoring instrumentation needs to be implemented by our team, to avoid disruption to the WAN/routers.

Our team currently uses a combination of HP Openview, VitalNet, and other software for our network "health" information and alerting. In other enterprises (Ameritech) I have previously used Concord (http://www.concord.com/) products to the same effect. All of these solutions provide useful statistics (but not mapping) and are limited their ability to detect and deal with dependencies.


There are applications which provide a map display such as Don envisions, some in real-time, these are generally among the more expensive products. I have been working on a limited open-source application (http://sourceforge.net/projects/netmap/) providing some of this functionality, and the graphing and display issues involved are just the tip of the iceberg.


There are several map-capable products that could be considered, I've heard good things about these three:

  • http://www.ipswitch.com/Products/WhatsUp/monitoring.html
  • http://www.lanware.net/NetworkManagment.asp
  • http://www.intermapper.com/



The most recent NWFusion buyers guide for Network Monitoring I can find (http://www.nwfusion.com/bg/netmon/netmon.jsp) was published in 1999, and is sorely out of date. They still list NetMetrix and other non-existent products, and there are probably many new products in this arena which are not included. Perhaps there are other, better, resources for locating vendors?

Monday, April 29, 2002

BBC: "Employees seen as computer saboteurs"

Ignoring the funny spelling, they have some good points.
Feel free to forward as you see fit.

"Employees seen as computer saboteurs"
  • http://news.bbc.co.uk/hi/english/sci/tech/newsid_1946000/1946368.stm
  • http://slashdot.org/article.pl?sid=02/04/29/1231200&mode=thread&tid=172

Workers unfamiliar with computers or who blithely open files attached to e-mail could kick off virus outbreaks or inadvertently aid hackers trying to get access to an organisations internal network.
Customer service staff at call centres can also cause security headaches for companies if they are not trained to spot or deal with people who call and try to extract information about passwords and customer accounts