Seagate ST3300655LC Manual de usuario descargar pdf (Pagina 34)

Blue Coat SG Appliance Release Notes

HTTP Changes

SGOS 4.2.2 contains better HTTP response header parsing support.

This enhancement eliminates the limitations of previous releases:

❐ Response headers that are larger than approximately 8 KB were not parsed.

❐ Length of any individual header cannot be larger than 8 KB.

❐ Only up to 125 response headers were parsed.

❐ Response header continuation was not supported.

❐ HTTP compression level can now be controlled by policy.

ICAP Performance Enhancements

The max-cache-size dependency for scanning has been removed, resolving a number of

issues surrounding patience pages and improving performance. Among them:

❐ When the HTTPS proxy was enabled, the patience page did not show the progress

correctly.

❐ If a cached object contained a virus and was sent for a rescan, ProxySG still served it.

❐ Requests to some HTTPS sites were resulting in a 400 BAD request.

❐ The ProxySG gave a "Connection failure" error page for ICAP 500 Server error

responses.

❐ The ProxySG crashed when ICAP worker creation failed while scanning cached

content.

❐ Certain non-cacheable file sizes were not served when the patience page was enabled.

❐ The ProxySG was not maintaining persistent connections to the ICAP server.

❐ ICAP health checks were always failing with response timeout.

❐ FAIL_OPEN for scan_cached_object case did not work.

❐ A patience-page loop existed as expires headers set in the past overrode the four-hour

expiration on non-cacheable objects.

Internationalization--General Support

For management interfaces, the only character encodings supported are ASCII and UTF-8.

(ASCII is a subset of UTF-8.) This affects the CLI, the encoding of CPL source files,

exception pages, and access logs. Libraries such as Shift-JIS and Big5 (Chinese) are not

supported.

For proxy network traffic (such as HTTP requests from a client workstation and instant

messaging), a variety of different character encodings are supported, including Shift-JIS

and Big5 (Chinese).

Generally speaking, the Blue Coat internationalization feature provides support for:

❐ Non-ASCII user names, group names and passwords (in the most common cases

only).

❐ Exception pages.

❐ Non-ASCII instant messaging (in the common cases only).

❐ Director.

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Seagate ST3300655LC Manual de usuario Pagina 34