Document ID: RDWR-ALOS-V2900_AG1302
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Chapter 15 – Filtering and Traffic Manipulation
Alteon enables traffic classification, manipulation and redirection. This chapter includes an overview
of filters, load balancing modes, and configuration examples.
Filters are policies that enable classification, manipulation and redirection of traffic for load balancing
purposes, network security, Network Address Translation (NAT) and more.
Starting with version 28.1.50, Alteon includes additional filtering features, such as reverse session
and redirection to proxy, to support the different load balancing modes. For more information, see
Filtering Enhancements, page 363
.
Alteon supports the following load balancing modes:
•
Routing mode or non-transparent load balancing—Alteon is responsible for full traffic
manipulation.
•
Semi-transparent load balancing—Alteon redirects traffic to services which perform minor
adjustments to the client's packet.
•
Transparent load balancing—Alteon performs traffic inspection and classification of all layers,
load balancing traffic with one or more service farms while forwarding it to the original
destination without any change to the original packet.
The following topics are discussed in this chapter:
•
Basic Filtering Features, page 356
—Describes the benefits and filtering criteria to allow for
extensive filtering at the IP and TCP/UDP levels.
•
Filtering Enhancements, page 363
•
Load Balancing Modes, page 364
•
MAC-Based Filters for Layer 2 Traffic, page 373
•
VLAN-Based Filtering, page 373
•
Filtering on 802.1p Priority Bit in a VLAN Header, page 376
•
Persistence for Filter Redirection, page 377
•
Filter-Based Security, page 379
•
Network Address Translation, page 384
This section includes two examples of NAT:
—
Internal client access to the Internet
—
External client access to the server
•
•
Matching ICMP Message Types, page 395
•
Multicast Filter Redirection, page 396
•
•
Content Class Filters for Layer 7 Traffic, page 399
•
