Secure Computing SSL Scanner Manual do Utilizador

1Understanding SSLRegardless of where you access the Internet from, the connection between your Web browser and any other point can be routed through

10Securing Outsourced Applications ExampleMore and more critical services are being provided by partners, often over the Internet and secured by SSL.

11and signed logs off to a secure server to ensure audit-ability. Without these robust policy features, combined with automatic website categorization

12InternetSSLSSLSSLSSLWeb ApplicationsCorporate HeadquartersData CenterWAN Optimization “Concentrator” SSL Proxy• Application Acceleration• Malware Pr

13Securing and Optimizing WAN Traffic ExampleA Blue Coat ProxySG used for SSL WAN optimization acts as the SSL proxy allowing branch office workers secu

14When used in WAN optimization, the ProxySG is used similarly to a regular proxy, and works as follows:The client makes a request for a service, whic

15Figure 12 illustrates the Blue Coat ProxySG Reverse HTTPS Solution.InternetSSLSSLUsersCorporate HeadquartersReverse HTTPS Proxy• Web Server Accelera

16Web Server Acceleration ExampleInternetUsersWeb ServersBlue CoatServer AcceleratorWith SSL100s of HTTPSConnections TerminateAt AcceleratorIntranetFi

17Dedicated CDN Application ExampleCoreBackboneUsersWeb ServersBlue CoatServer AcceleratorWith SSLCacheable ObjectsRetrieved fromNearest ServersIntran

18How Secure is the ProxySG Itself?The Blue Coat ProxySG has its own, patented, operating system known as SGOS (secure gateway operating system). SGOS

19IT can once again gain control over their WAN links, accelerating the good and denying the bad, regardless of SSL encryption. No matter how your use

2How It WorksWhen a client and server communicate, SSL ensures that the connection is private and secure by providing authentication, encryption, and

20EncryptThe translation of data, a secret code. Encryption is the most effective way to achieve data security. Unencrypted data is called plain text,

21ISPShort for Internet Service Provider. A company that provides connection and services on the Internet, such as remote dial-in access, DSL connecti

Web Server AcceleratorsA system that services Web servers by offloading TCP/IP connections, responding to Web Client requests, replicating the Web cont

3Figure 2 illustrates an SSL transaction:The handshake begins when a client connects to an SSL-enabled server, requests a secure connection, and prese

4For instance the cipher suite “RSA-RC4-MD5” means that RSA certificates are used for both authentication and key exchange, while RC4 is used as the bu

5InternalUsersSpywarePhishingVirusesIntellectual Property Rogue AppsWormsBusiness AppsCorporateNetworkExternalAppsActive Server PagesInternetSSLSSL SS

6InternetSSLSSLSSLSSLSSLSSLSSLSSLUsersWeb ApplicationsCorporate HeadquartersWeb ServerData CenterWAN Optimization “Concentrator” SSL Proxy• Applicatio

7Blue Coat ProxySGs are the industry’s only solutions designed specifically for securing, accelerating and scaling SSL traffic to internal as well as ex

8When the SSL forward proxy is used to intercept HTTPS traffic, it can also:Optionally cache HTTPS content.>-Apply HTTP-based authentication mechani

9Perhaps surprisingly, remote application performance actually improves as a result of the acceleration techniques of compression, caching, and HTTP o