Specifications

OmniAccess 5510 USG - Release Notes
September 2010
Feature Descriptions
Authentication Features
AAA (Authentication, Authorization, and Accounting) is a system in IP-based networking to control the
resources that users have access to and to keep track of the user activity over a network.
Local Authentication
Allows a user to be authenticated against the local database.
RADIUS
RADIUS (Remote Authentication Dial-In User Service) is a standard protocol that provides
centralized authentication and accounting services for remote users. The OmniAccess 5510 USG can
be configured to authenticate remote users against a RADIUS server.
TACACS+
TACACS+ is a protocol that can be used to communicate with a TACACS+ authentication server.
The OmniAccess 5510 USG can be configured to authenticate remote users against a TACACS+
server.
Firewall
Firewall is a network element that uses software intelligence to filter traffic between trusted and
untrusted zones. Firewalls can monitor the flow of traffic, and decide to either permit or deny the
communication that is being attempted.
Stateful Packet Inspection and Filtering
A stateful packet filter records the status of all connections and allows only those packets that are
associated with a current connection.
Packet Filtering
This is a simple firewall solution that is usually implemented on devices like routers that filter
packets. The packet-headers are inspected when going through the firewall. Packets are analyzed
against a set of rules. Depending on these rules, the packet is either accepted or denied.
Stateful Inspection
This is an advanced implementation of packet filtering that inspects packets at higher network layers,
up to the application layer. Such filters interpret transport-level information (such as TCP and UDP
headers) to analyze and record all current connections.
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