Fastream IQ Reverse Proxy - программа, которая контролирует появление новых или смену старых IP-адресов в локальной сети. Определение смены IP-адреса происходит по MAC-адресу.
Так же программа позволяет определять другие проблемы в сети, например, когда свич сошел с ума и генерит кучу левых пакетов с левыми IP-адресами и MAC-адресами или такой же компьютер пользователя, некоторые виды ARP-spoofing-а.
IQRP знает более 2000 HTTP connections/s и 250 SSL connections/s

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Fastream IQRP is a secure web reverse proxy solution for Windows NT, featuring a state-of-the-art 32 connections/thread asynchronous architecture, providing the best architectural design for the Windows platform by utilizing multiple CPUs/CPU-cores, 256-bit industry strength SSL/TLS, authentication, bandwidth limiting and load balancing with failover protection as well as GZip acceleration and absolute URL translator.
IQRP features a state-of-the-art multiple-connections/thread asynchronous architecture, providing the fittest architectural design for Windows by utilizing multiple CPUs/CPU-cores.

IQRP v1.4+ can satisfy 4000 HTTP connections/sec and 250 SSL TPS on a modern AMD/Intel CPU and can utilize multiple CPU-cores!

What's new in IQRP 1.4.0R
Anti hot-linking (prevent other sites link to your multimedia files and consume bandwidth), configurable at file extension granularity with whitelisting
URL rewrite with regular expressions feature implemented for translating requests such as, /path/index/1/test ---> /path/index.aspx?id=1&user=test
File extensions defined per IP/port can be excluded from cache (with no HEAD command sent prior to GET)--useful for dynamic content which gets confused with the HEAD and expiring fast
Keep-Alive could now be disabled and when enabled idle timeout for connection can be specified
A serious fix in HTTP engine under heavy load
The entire HEAD-before-GET/cache could be shut down by setting "Cache Capacity" to 0
Time in "Expires" response header is now honored while revalidating
IP2Location database updated to March 2007
Digest authentication IE7 compatibility fixed