ConfigBytes

Recently I experienced an issue with a customer that had their long distance carrier shut the service down .  The reason why was that they were showing an excessively large amount of long distance calls made to various African countries as well as Cuba.

The customer is using a Call Manager Business Edition which puts the Call Manger and Unity on the same 7800 server.

Click to open PDF

The way the problem was presented to us suggested that these calls may have been made internally (it’s my experience that someone on the cleaning crew could be making these calls) which can be easily and quickly identify, all we need to do is look for a pattern when the calls were made, time, day and extension.

Most the time internal fraud calls like theses are made from an open fax machine that has a headset attached to it.  Sometimes Fax lines may be configured to go straight to the gateway on an FXS port; relying on whatever the dial peer

dial-peers configured
dial-peer voice 11 pots
destination-pattern 9[2-9]……
port 0/2/0:23

forward-digits 7that port is configure to.   Of course this type of configuration bypasses the CM and its logging, dial restriction ability.    Other times the fax line can be set to go into the CM and required to follow what every the dial restrictions are set to.

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July 13 2010 marks the end of Microsoft’s extended support for Windows 2000

I’m sad to see it go, it’s my opinion that Windows 2000 was probably one of the most stable OS’s that Microsoft put out.  I rarely had any issues running it and I know that a lot of businesses were still using the OS, it does a great job of getting basic internet tasks done.

We seen several services packs released over years for Windows 2000, service pack 1 gave us IPV6 support which was easily enable with the net start tcpipv6 command.   Service pack 2 gave us DX 9c and 128-bit encryption, SP 3 gave more security updates and SP 4 allows users of an Win2k users who have not applied any packs to fully upgrade.

Granted is was not all was warm and fuzy in Win2k land, there were security issues in the beginning most notably was the leak memo by Marry Jo Foley who revealed that Win2K had over sixty thousand known defects .  Win2K also received its fair virus share of famous attacks such as Code Red and Nimda.

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Qemu

So far I am not pleased with the new GNS3 07 , I’m having some serious issues in rying to configure the settings.

Searching the internet has not yeilded much information on how to set this up. This week I’ll be “plunking” around with the new GNS3, trying to make it work. I hope to have it all figured out soon so I can upload my PIX labs that I’ve been working on.

Note that this was originally posted in May 2009

I wrote this document to help with my CCNA studies, the intent of the document was to help me quickly convert class A and B subnets for the test.  The CCNA will present subnet questions in CIDR format and you should know how to answer them in less then 90 seconds.

I converted the document from Microsoft Word 2007 to PDF using doPDF6.3 a  free PDF converter.  So far it appears to have done a nice job.  You can find it here >Do PDF

The document is here > The Last Subnet How2 Doc

Please let me know of any errors, spelling or grammar. 

(Last edited by rstaples on 20, October 2009 at 08:00 – for grammar and spelling)