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Old 20th May 2008
Nonesuch Nonesuch is offline
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Join Date: May 2008
Location: Chicago, IL
Posts: 6


You want to do this with a table, not a macro.

While it is "safe" to have a static table of just RFC-1918 space, if you want to blackhole the entire "bogon" network space, more care is needed, as ARIN will occasionally allocate addresses out of historically invalid address ranges. One way to play it safe is to use a cron job to automatically download the updated 'bogon' list and populate a table.

A better explanation, along with links to the bogon lists, can be found here:
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