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Sams Teach Yourself Network Troubleshooting in 24 Hours, Second Edition by Jonathan Feldman

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Q&A

Q1: Our boss said to get a firewall, so we have one, and it seems reasonably good. Still, I’m concerned about the network internally because we have a lot of PCs with PC Anywhere that have arbitrary dial-in ports. Also, I’m hearing more and more about browser bugs that let the bad guys subvert my internal workstations, rendering my firewall useless!

I don’t have a lot of money to lock down our network, so I can’t invest in expensive network-monitoring programs or audit systems. What can I do?

A1: Security people like to refer to most corporate networks as “crunchy on the outside, chewy on the inside,” meaning that most folks simply do not invest the time in applying security patches for known security holes. If you’re interested in how ...

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