3Com 3C16111 - SuperStack 3 Firewall Web Site Filter, Руководство пользователя

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RADIUS — Remote Authentication Dial-in User Service. RADIUS enables
network administrators to effectively deploy and manage VPN Client
based remote users. The RADIUS server allows multiple users to share a
single Group Security Association but require an additional unique
password for accounting and access.
SYN Flood — A type of DoS attack. This is where a client opens a
connection with a server but does not complete it. If the server queue fills
up with partially-open connections, no other clients can make genuine
connections to that server.
UTC —stands for Universal Time Co-ordinated, and is the standard time
common to all places in the world. It is also commonly referred to as GMT
or World Time.
VPN — stands for Virtual Private Network, and is a method of
networking that uses data encryption and the public internet to provide
secure communications between sites without incurring the expense of
leased lines.
Web Site Filter — Used in this guide to refer to the SuperStack 3 Web
Site Filter.
See Chapter 13, “Types of Attack and Firewall Defences” for further
information on types of attack and how the Firewall defends against
them.
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SuperStack 3 Firewall User Guide
DUA1611-0AAA02.book Page 15 Thursday, August 2, 2001 4:01 PM