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Blue Coat SGOS 4.x Upgrade Guide
20
Endpoint Mapper and SOCKS Compression
The Endpoint Mapper proxy accelerates Microsoft RPC traffic between branch and main offices,
automatically creating TCP tunnels to ports where RPC services are running. The Endpoint Mapper
proxy can be used in both explicit and transparent mode.
Using SOCKS compression for TCP/IP tunnels reduces bandwidth consumption and improves
latency.
No configuration is required on the main office ProxySG to support SOCKS compression. However,
configuration is required on the branch ProxySG to forward data through the SOCKS gateway. You
can use policy or the
socks-gateway CLI options to enable SOCKS compression globally. Using
policy, you can enable or disable compression on a per-connection basis on either the client side or the
server side.
You must also configure the branch ProxySG for the Endpoint Mapper proxy.
Upgrade/Downgrade Behavior
• On new or upgraded systems, compression on the SOCKS proxy is enabled by default. SOCKS
compression is disabled by default on the SOCKS forwarding host.
• On new or upgraded systems, the Endpoint Mapper proxy service is created, but not enabled, on
port 135.
• If you downgrade the main office ProxySG but not the branch ProxySG, the branch office might
still attempt compression, but compression will fail.
• On an upgraded system, the SOCKS proxy settings and policy is unchanged from the
downgraded version.
Documentation References
• Chapter 5, “Managing Port Services,” in the Blue Coat ProxySG Configuration and Management
Guide
• Chapter 6, “Configuring Proxies,” in the Blue Coat ProxySG Configuration and Management Guide
ICAP Patience Page
Patience pages display regardless of any pop-up blocking policy that is in effect.
CLI Changes and Additions
The following CLI commands have been modified:
New commands created to view Patience Page settings are:
Table 3.4: Changed CLI Syntax
Abandoned Syntax Current Syntax
inline http icap-patience-details eof inline http icap-patience details eof
inline http icap-patience-header eof inline http icap-patience header eof
inline http icap-patience-help eof inline http icap-patience help eof
inline http icap-patience-summary eof inline http icap-patience summary eof