Citrix Access Gateway Enterprise Edition Technical Overview Seceidos GmbH&Co. KG Robert Hochrein

2 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Citrix Access Gateway SSL VPN Remote Access Access Gateway Standard Edition best for Small-to-Midsized Customers Simple and Cost Effective Secure Remote Access Access Gateway Advanced Edition best for Presentation Server Environments Advanced Access Control and Device Flexibility Access Gateway Enterprise Edition best for Enterprise Deployments Complex and Demanding Environments

3 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Access Gateway Enterprise Edition Features & Benefits FeatureDescriptionBenefit Traffic AccelerationSpeed access to applications and resources with SSL offload, web compression, and TCP optimization. Provide the optimal remote access experience for users over low bandwidth, high latency connections. High Availability Configuration Link master and backup appliances to create a redundant cluster which ensures sessions will remain active if the master fails. Keep remote access available for users even in the case of an appliance failure. Global Server Load- balancing (GSLB) Route client connections to the best site based on site availability, health, proximity, and responsiveness. Improve the remote user’s access experience by connecting them to the best performing site. Implement a disaster recovery and business continuity strategy. Roles-based Administration Create and manage administrative users and groups that can each have unique management privileges. Define security policies to ensure administrators only perform the minimal set of operations required by their role. Enterprise-class Auditing Monitor and log all operations requested by end users and administrators. Gain full visibility into all operations to ensure services and data remain secure. Quarantine GroupsProvide limited access rights for clients which fail the end-point analysis scans. Create remediation sites to allow clients to install the most recent anti-virus pattern files, operating system patches, etc. prior to connecting to the protected resources.

4 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Access Gateway Enterprise Edition Features & Benefits (continued) FeatureDescriptionBenefit Browser CleanupRemove objects and data stored on the browser while the SSL VPN session was open. Prevent sensitive corporate information from inadvertently being leaked to mobile laptops and home PCs. Denial of Service Prevention Protect resources from common denial of service attacks such as SYN attacks and HTTP GET floods. Ensure continued service to legitimate users by protecting the organization’s servers. Access InterfaceAllow users to setup bookmarks and access files through a web browser. Give users a quick and easy way to access frequently used resources Extensive Authentication Support Provide authentication from a wide variety of typical enterprise authentication systems (including smart cards). Allow administrators to easily integrate their SSL VPN into their existing environment. Security CertificationsEnterprise Edition has been independently certified by ICSA Testing Labs (v2.0). A FIPS Level 2 certified cryptographic module is available as an option for the model 9000 platform as a hardware option. Customers have independent verification of the security and capabilities of the Enterprise Edition. US Government organizations and contractors may require FIPS certified cryptography. VLAN SupportSupport 802.1q packet tagging to route packets to the correct VLAN segment. Allow administrators to quickly deploy the SSL VPN to work in networks with existing VLAN topologies.

5 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Access Gateway Enterprise Edition Appliance Options Software editions supported Enterprise Form Factor1U2U FIPS Option─● Redundant power supplies ─● Maximum VPN users2,5005,000

6 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Methods of Initial Configuration Command-line Interface (CLI) Java Configuration Utility (GUI)

7 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Basic Configuration – cli method REVIEW CONFIGURATION PARAMETERS MENU This menu allows you to view and/or modify the NetScaler's configuration. Each configuration parameter displays its current value within brackets if it has been set. To change a value, enter the number that is displayed next to it NetScaler's IP address: [ ] 2. Netmask: [ ] 3. Advanced Network Configuration. 4. Time zone. 5. Cancel all the changes and exit. 6. Apply changes and exit. Select a menu item from 1 to 6 [6] To access the configuration utility using supplied console cable and terminal emulation of 9600,N,8,1 Tech 1

8 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Accessing the Administration Portal A open web browser to the default IP (

9 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Configuration Utility Login - Accept the certificate warning -Login with default user “nsroot” -Default password is “nsroot”

10 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Administration Traffic Management traffic uses port 3010 and an encrypted protocol Administrator Workstation

11 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Quick Start with the SSL VPN Wizard Start the Wizard Set the IP address Set the SSL certificate Select a DNS server Point to a AAA server And you’re done!

12 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Define Multiple Virtual Servers Each virtual server has a unique : –IP address and FQDN –SSL certificate –Authentication configuration –Policy set Policies can optionally derive from a global policy set Vpn1.company.com ( ) Vpn2.company.com ( ) Vpn3.company.com ( )

13 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Dashboard Utility

14 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Supports Major Authentication Methods –Active Directory –LDAP –NTLM –RADIUS (with challenge-response support) –RSA SecurID –TACASC+ –Local –Client Certificates Supports Cascading Authentication Authentication

15 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Authorization Policy Driven Access –Authentication by Policy –Authorization by Policy –Session control by Policy –Auditing by Policy Wide Variety of Criteria –Policy based on network information –Policy based on application access –Policy based on client certificate parameters –Policy based on client configurations Highly Granular Access Control –Users/Groups up to Global policies –HTTP authorization based on URL –TCP/IP authorization based on address and port

16 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Auditing Full Administrative Audit Trail –All management operations logged Full User Audit Trail –All session activity (login, logout, timeout) –All network flows (not just web) All System Events Support for External Syslog Servers

17 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Client Security Session Policies can control: –Split tunneling –Forward proxy definitions –Session timeout values –Client security End Point Analysis –Built-in support for Antivirus checks –Built-in support for Firewall checks –Host identification Client Side Clean Up –Clean browser cache, history, auto- completion files, plug-ins, etc. –Control with session policies –Administrator can mandate

18 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Denial of Service Protection – SYN Attacks ACK Client Server SYN SYN +ACK SYN SYN +ACK SYN SYN +ACK SYN SYN +ACK SYN SYN +ACK Client Server Normal TCP Sequence SYN Flood Enterprise Edition avoids memory consumption with packet cookies

19 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Other Denial of Server Protections Other Prevented Attacks: –Packet Floods –HTTP GET Floods –SSL Floods –Idle Connection Floods request Javascript challenge request Javascript challenge request Javascript challenge

20 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Security User Quarantine –Users assigned to a quarantine group when end-point analysis fails –Differentiated session and resource authorization policies –Use to grant limited access to remediation sites Quarantined Web Web Portal

21 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Client Support All Windows Platforms –Windows 98/ME –Windows NT/2000/XP/SP2 –Windows CE and PocketPC MacOS X and Linux –Java Based Client Reliable Application Access –No application content modification Enforces Client Security

22 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Navigation Homepage Bookmarks –Customize global bookmarks –Per-User bookmarks –Filesystem bookmarks Themes –Custom style sheets supported –Logo update –End user can pick their own colors Integrated File Manager –Web based file access Unicode Support

23 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Server-Initiated Requests Source IP = Mapped IP Source IP = Client IP Client connects and is assigned a unique Mapped IP address Servers can use this Mapped IP address to establish server-initiated connections back to the client.

24 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. High Availability Pairing Vpn.company.com ( ) Network health-check packets are exchanged Master Backup Two appliances can be linked to form an active / passive cluster. Health-checking packets are constantly exchanged between the pair. When the master fails, the backup assumes the IP address. All connections from the client are broken and must be re-established.

25 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Global Server Load Balancing (GSLB) Distributes network traffic across multiple sites Route client connections to the nearest site Distributes server load across multiple sites Implement Disaster recovery

26 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. 5x Faster Includes NetScaler Capabilities Internet

27 Internal and Partner Use Only © 2005 Citrix Systems, Inc.—All rights reserved. Access Gateway Enterprise Edition The best solution for the complex and demanding enterprise! Access Gateway Enterprise Edition