© Indira Gandhi Delhi Technical University for Women

DEPT. OF INFORMATION SECURITY MANAGEMENT (I.S.M.)

Presenting

SUBMISSION BYYansi KeimM. Tech 1st YearInformation Security ManagementApril 2016

CONTENT What is Citrix? Overview of Citrix NetScaler Understanding Citrix NetScaler References

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CITRIX PRODUCTS© I.G.D.T.U.W

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THE WORLD IS A BUSY,

BUSY PLACE

• ,VDV

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Researching

Shopping

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SLOW NETWORK HIGH SERVER LOADS

loading

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For Mobile and Desktop

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CITRIX NETSCALER IS ADC

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TECHNICAL ASPECTS OF NETSCALER The Citrix NetScaler product is an application switch that performs application-

specific traffic analysis to intelligently distribute, optimize, and secure Layer 4-Layer 7 (L4-L7) network traffic for web applications.

It has switching feature. When deployed in front of application servers, a NetScaler ensures optimal distribution of traffic by the way in which it directs client requests.

NetScaler security and protection features protect web applications from application-layer attacks.

A NetScaler allows legitimate client requests and can block malicious requests. It provides built-in defenses against denial-of-service (DoS) attacks and

supports features that protect applications against legitimate surges in application traffic that would otherwise overwhelm the servers.

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CONTD… A NetScaler resides between the clients and the servers, so that client

requests and server responses pass through it. In a typical installation, virtual servers (vservers) configured on the

NetScaler provide connection points that clients use to access the applications behind the NetScaler.

In this case, the NetScaler owns public IP addresses that are associated with its vservers, while the real servers are isolated in a private network.

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PERFORMANCE ENHANCING FEATURES AND SETTINGS

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TCP CONNECTION WITHOUT NETSCALER

Server sees eleven packets

Client ServerSYN

ACK

SYN+ACK

GET

FIN

ACK

ACK

Data

DataDataFIN

Server de-allocates storage for the connection

Server allocates storage for connection

TRANSACTION WITH NETSCALER

Server sees

four packets

Client ServerNetScalerSYN

ACK

SYN+ACK

GET

FINACK

ACK

Data

DataData

GET

Data

DataData

FIN

Citrix Confidential - Do Not Distribute

PERFORMANCE ENHANCING FEATURES

SSL Offload Compression

Caching TCP Session Management