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What does Webgate Plus do that firewalls and Intrusion Detection Systems (IDS) do not?

April 26, 2017detection firewalls IDs intrusion Plus SYSTEMS webgate

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What does Webgate Plus do that firewalls and Intrusion Detection Systems (IDS) do not?

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Firewalls control access to servers based on IP address and port numbers defined in Access Control Lists. They also offer Network Address Translation (NAT), and some offer proxy services. These firewalls pass HTTP requests sent to port 80 without examining the content. Today there are more than 400 application level attacks that can be mounted against web servers and their applications. Intrusion Detection Systems (IDS) do not examine what is happening with normal port 80 traffic, nor are they operating in real time. Webgate Plus examines all HTTP and HTTPS commands in real-time and permits valid requests while blocking invalid requests and attacks. As a result, invalid commands are never sent to the web servers.