troubleshooting Question

How to prevent internal intruder

Avatar of belim
belim asked on
OS Security
4 Comments2 Solutions530 ViewsLast Modified:
I am network administrator in one of the company in malaysia, and a novice in IT security.
Lately, an internal intruder who able to sniffer the packet in my network send an email to me everyday, and telling me all the activities that i did. For eg. The content of email that i sent out by using my hotmail account, attachment file sent, the files that i transfered over my internal network.
I felt so unsecure now, i am keen to know what are the tools available that enable the internal intruder to do so, and any tools avaiable to overcome this problem. Please help............
I am using PIX firewall and ISS realsecure IDS in my network, and all kinds of cisco router and switches.
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