Blue Coat Systems SGOS 4.x Content Filtering, CPU Monitoring, CLI Commands, Command Description

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Chapter 3: Feature-Specific Upgrade Behavior

On an upgrade, cached HTTP objects are usable. On a downgrade, cached HTTP objects fetched after the upgrade are re-fetched.

Documentation References

•Chapter 6, “Configuring Proxies,” in the Blue Coat ProxySG Configuration and Management Guide

•The Blue Coat Content Policy Language Guide

Content Filtering

•Cerberian content filtering has changed its name to Blue Coat Web Filter (BCWF). No upgrade issues exist. On a downgrade, the vendor none is selected instead of any unsupported choice.

Note: During the 60-day SGOS trial period, no username or password is required to use Blue Coat Web Filter. For more information, refer to “Configuring Blue Coat Web Filter” in Chapter 18 of the Blue Coat ProxySG Configuration and Management Guide.

•Three new content filtering third-party vendors —InterSafe, Optenet, and Webwasher—have been added in SGOS 4.x. These new vendors cause no upgrade issues. On a downgrade, the vendor none is selected instead of any unsupported choice.

•The Websense log protocol changed from version 1 to version 3 in SGOS 3.2.x.

Documentation References

Chapter 18, “Content Filtering,” in the Blue Coat ProxySG Configuration and Management Guide

CPU Monitoring

You can enable CPU monitoring whenever you want to see the percentage of CPU being used by specific functional groups. CPU monitoring is disabled by default.

You can also view CPU monitoring statistics through Statistics>Advanced>Diagnostics.

CLI Commands

The following commands allow you to enable and manage CPU monitoring:

Table 3.3: New CLI Commands for CPU Monitor

Command

Description

 

 

SGOS#(config diagnostics) cpu-monitor

Enables or disables the CPU monitor.

{enable disable}

 

SGOS#(config diagnostics) cpu-monitor

Sets the interval between CPU monitoring.

interval seconds

 

SGOS#(config diagnostics) view cpu-monitor

View CPU monitor statistics.

Documentation References

Appendix E, “Diagnostics,” in the Blue Coat ProxySG Configuration and Management Guide.

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Contents Blue Coat Systems ProxySG Contact Information Contents Blue Coat Sgos 4.x Upgrade Guide Chapter Title Description Changes Between Sgos 3.x and SgosAbout the Document Organization Related Blue Coat DocumentationConventions Definition Document ConventionsUpgrading Upgrade Behavior, GeneralRestoring to Previous Versions Summary of Changes to the Upgrade ProcessRedoing an Upgrade from Sgos 2.x or CacheOS Redoing an Upgrade from SgosLicensing Changing Between Sgos 4.x VersionsType Component Description SSL Documentation References Hardware SupportedAccess Logging Feature-Specific Upgrade BehaviorProtocol Log Global Enable/Disable SwitchNew CLI Commands Document ReferencesPeer-to-Peer New Access Logging SubstitutionsUpgrade Behavior CLI Compatibility IssuesBlue Coat Sgos 4.x Upgrade Guide New Substitutions Administrator Actions AuthenticationBandwidth Management Downgrade Behavior CompressionCPU Monitoring Content FilteringCLI Commands Command DescriptionCLI Changes and Additions Upgrade/Downgrade BehaviorEndpoint Mapper and Socks Compression Icap PatiencePolicy Https//ProxySGIPport /policyimportlisting.html Policy DeprecationCPL Abandoned Syntax Replacement SyntaxBlue Coat Sgos 4.x Upgrade Guide Abandoned Policy Conditions Abandoned CPL Current CPL Abandoned CPL Current CPL Abandoned CPL Current CPL Exception Pages Object Naming UTF-8 EncodingDocumentation Reference Securing the Serial PortSmartFilter Version SSL Key ManagementDocumentation References Blue Coat Sgos 4.x Upgrade Guide Index VPM

SGOS 4.x specifications

Blue Coat Systems SGOS 4.x is a robust operating system designed for the Blue Coat ProxySG series of appliances, which serve as content filtering and web security solutions. The SGOS (Secure Gateway Operating System) is crafted to enhance network performance while providing extensive security and policy enforcement capabilities. This article delves into the numerous features, technologies, and characteristics that define SGOS 4.x, making it an essential tool for organizations looking to fortify their web traffic management and security.

One of the standout features of SGOS 4.x is its advanced web filtering capabilities. The system employs a comprehensive URL categorization database that allows organizations to enforce content policies effectively. By categorizing millions of web pages, SGOS enables users to block or allow access to specific sites based on their content category, ensuring a safe browsing experience for employees and preventing access to harmful or non-work-related content.

Another notable technological characteristic of SGOS 4.x is its accelerated SSL decryption. As encrypted traffic continues to dominate the web, it becomes increasingly important for organizations to inspect this traffic for potential threats. SGOS 4.x offers robust SSL decryption capabilities that allow organizations to analyze encrypted traffic while maintaining the confidentiality and integrity of the data being transmitted. This attribute not only strengthens security but also aids in compliance with regulatory requirements.

SGOS 4.x is also equipped with exceptional caching and content delivery features. By caching frequently accessed content, the system reduces load times and optimizes bandwidth usage. This caching mechanism is enhanced by predefined policies that dictate how content is stored and retrieved, significantly improving user experience while reducing operational costs.

Furthermore, SGOS 4.x supports advanced reporting and analytics features. The integrated reporting tools provide administrators with insights into web usage patterns, bandwidth consumption, and security incidents. These insights facilitate informed decision-making and allow organizations to refine their web usage policies based on actual user behavior and threat landscape analysis.

In terms of scalability, SGOS 4.x is engineered to support a wide range of deployment scenarios, from small businesses to large enterprises. The architecture is designed to efficiently handle varying volumes of traffic without compromising performance or security, making it a flexible solution for diverse organizational needs.

Overall, Blue Coat Systems SGOS 4.x presents a powerful platform for web security and traffic management. With its advanced filtering, SSL decryption, caching, and analytics capabilities, SGOS 4.x remains a vital solution for organizations aiming to enhance their security posture and improve operational efficiency in an increasingly complex web environment.
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