Networks were never intended to run in stealth mode. Parts of the network communicate with each other, and preventing that communication can cause problems. So there are advantages and disadvantages to running in stealth mode.

For example:

http://www.broadbandreports.com/forum/remark,3490473~mode=flat∞

http://grcsucks.com/the.idiocy.goes.on.and.on.htm∞

Google for firewalls stealth mode∞


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