Blue Coat SG510 Series, Installation Manual

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P/N 231-02833 Blue Coat SG510 Installation Guide page 75
Chapter 4: Option Cards
The SG510 comes with a number of expansion slots; three option cards are
available.
Dual Gigabit Ethernet 1000B-SX (optical) Card
This card provides one gigabit of throughput to the network.
Dual Gigabit Ethernet (copper) Pass-Through Card
This card is a two-port, PCI network interface card (NIC). The Pass- Through
Card has three separate functions:
• It works as a standard NIC to move data in and out of the SG510.
• It provides a hardware failover mechanism in case of a power loss to or
hardware or software failure in the SG510. In the event of any of the above,
the Pass-Through card will physically bypass Ethernet traffic around the
SG510.
• It does away with the need for a router or Layer 4 switch when the SG510 is
configured for transparent proxy by working with Layer 4 redirection
software in the SGOS operating system.
SSL Accelerator Card
This PCI card enables the SSL proxy service to intercept HTTPS traffic (in explicit
and transparent modes) so that security measures such as authentication, virus
scanning and URL filtering, and performance enhancements such as HTTP
caching can be applied to HTTPS content. Additionally, the SSL proxy allows you
to validate server certificates presented by various HTTPS sites at the gateway
and offers information about the HTTPS traffic in the access log.