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Network Security Auditing

I am hoping to get some expert opinion on this one. I am interested in knowing the best practices for performing a security audit for our network in terms of outside users accessing internal resources. I have a Cisco firewall in place, and have one single point of entry into the network from the outside, but I feel a certain amount of paranoia over network attacks. Any advice would be helpful in performing my own network security tests from the outside. Thanks for the help.
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dtpowell27
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dtpowell27
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Istvan KalmarHead of IT Security Division Commented:
Hi,

I advise to use my lecture:

http://www.scinetwork.hu/docs/SCI_ITBN_2010_v3.pdf

but is helpfull to audit your L2 network....
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Ernie BeekExpertCommented:
For starters, you could go to: https://www.grc.com/x/ne.dll?bh0bkyd2

It's a nice basic scan that I use a lot. It should take away the worst of your paranoia (or not ;).
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