In WebNS 5.20, the Cisco CSS 11506 supports up to four SSL modules, and the Cisco CSS 11503 supports up to two SSL modules.

In addition to support for the SSL module, Cisco WebNS Software Version 5.20 introduces the following features for the Cisco CSS 11500 Series:

TACACS+?Secures administrative access to the switch using centralized TACACS+ database

Dynamic Feedback Protocol (DFP) Manager?Provides a mechanism by which DFP-enabled servers give feedback to the CSS to make load-balancing decisions

Secure Shell Protocol Version 2 (SSHv2)?Telnet sessions supported over SSHv2

Weighted Domain Name System (DNS) balance?Global server load balancing via Weighted Round Robin of DNS record responses

PortFast?Spanning-tree feature to allow ports to become active quickly

Configurable timers for flow resource collection?Preserves long-lived flows by setting the length of time that information about a flow is stored in memory

User access restriction for graphical user interface (GUI)?Enables viewing of show screens while disabling configuration access on a per-user basis

Keepalives?Boost in number of keepalives to a total of 2048

Sticky Table?Increase in number of entries to 128,000