Roachys Weblog

A digital notebook of technical experiences

Archive for August 2008

DSBL dead….. :(

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Went to the DSBL.org site yesterday and found it’s (semi)dead.

http://dsbl.org/node/4

http://dsbl.org/node/5

I can’t believe they only have backups that are too old for them to risk restoring them…..seems to be a worrying absence of DR strategy there….

Looks like they’re starting again from scratch…..

More disappointing for me though is the fact that some of the really good articles on their site don’t exist any more…..

:(

Written by Paul Morgan-Roach

August 29, 2008 at 7:47 am

Posted in Security

Tagged with

Experts-Exchange Accreditation

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Just got my Master Status in the Networking Zone in EE….

Quite chuffed…..I get a free T-Shirt!

myaccountexpertsonlyexpertcertificates

To celebrate, booked my CCNA. Been planning to do it for ages and finally decided theres no time like the present :)

Written by Paul Morgan-Roach

August 28, 2008 at 1:31 pm

Posted in Cisco

Tagged with

How to determine the MAC address of a remote machine

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Sometimes it’s necessary to discover the MAC address of a remote system on a network quickly (for example when setting up DHCP scope reservations). It’s fortunately a really easy process to determine this information.

First of all, ping the remote host, then run an

arp -a

at the command line.  This will give you the MAC details.  The catch is that this only works on the same subnet – when trying to do this on a remote subnet (on the other side of a router, etc) you won’t get a response…there is a solution for this though, as long as the remote host you want to determine the MAC for is a Windows host.

NBTscan is a tool that can do this (and is available from the repositories on most linux distros (or at least on Debian, Ubuntu and Fedora, and is  also downloadable for Windows ;) )

Written by Paul Morgan-Roach

August 5, 2008 at 12:16 pm