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dwulff

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  1. You are right, the performance impact of blocking IP Ranges in a firewall** and router is substantive. The link** is to a whitepaper showing the drop in TCP connections and latency impact with an allow-only US policy. TechGuard makes an in-line appliance to block country ranges and by IP reputation before connections hit your firewall. **http://www.techguard.com/support/breakingpoint-poliwall-testing/ [edit] link broken
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