Anyway, I am shifting our mail / proxy servers from NT to
Linux. However, I need some assistance designing the network security using a firewall. I am wondering if packet level filtering will work well enough.
Packet filtering alongwith other measures should work. IPchains is good try it out. Also use tools like dsniff and nmap to check the security of the network.Shutdown services which are not needed. And block all ports which are not in use.
--> vinayak hegde
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