The best application level Firewall for Exchange just got better. Initially ISA was considered a weak product, barely above the web proxy, but after a few updates it got noticed for the security that it offers Microsoft products, its ease of use and its low cost. A lot of corporations implemented ISA internally to protect its Microsoft servers as internal attacks are a major and often overlooked threat.
Now, with the 2006 release Microsoft will try again to prove that its product is a worthy Firewall.
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