How to block foreign countries?

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JORGE RODRIGUEZ Thu, 07/17/2008 - 13:09
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You would need to gather info on Public IP block assigments by country, based on gather IP block assigments you can block the entrirely ip blocks at an edge router outside your firewall, you can create a deny acl, summarize ip blocks assigememst using wildcard mask and apply it to your inbound interface.

Database search for IP blocks by countries

Info on IANA, global coordination of IP global addressing.

Follow similar example on bellow link acls but use unwanted public IP blocks in acls.

Filtering at the edge



Abhilash Paul Sat, 12/22/2012 - 10:14
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Hi Sir,

I would like to know how to allow  the IP blocks only in USA


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