Sidewinder G2 6.1.1 Administration Guide - Glossary of Technical ...

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Sidewinder G2 VPN overview 13-4 Configuring Virtual Private Networks When used together, encryption and authentication are very much like writing an encoded message, sealing it in an envelope, and then signing your name across the flap. The receiver can first verify that the signature is yours as a means of determining the origin of the message. Next, the receiver can determine if the contents have been viewed or altered by checking that the envelope seal has not been compromised. Once the receiver is assured of the authenticity of the message, they can decode the contents and “trust” that the contents are as intended. VPN configuration options VPN involves establishing an association (or a trust relationship) between your Sidewinder G2 and an IPSec-compliant remote Sidewinder G2, host, or client. (These entities are referred to as “VPN peers.”) Once this trust relationship is defined, data sent between the two ends is encrypted and then authenticated before it is transmitted. There are three important concepts that comprise the Sidewinder G2 VPN: IPSec keys, which determine how the information is encrypted and decrypted, and may be manually or automatically exchanged. certificates, pre-shared passwords, and extended authentication, which authenticate the VPN peer. tunnel or transport encapsulation, two methods of how header information is passed. Understanding the options associated with each concept will assist you greatly in creating your security association. Study the following information to help you determine which VPN configuration best suits your network environment. About IPSec keys A key is a number that is used to electronically sign, encrypt and authenticate data when you send it, and decrypt and authenticate your data when it is received. When a VPN is established between two sites, two keys are generated for each remote end: an encryption key and an authentication key.
Sidewinder G2 VPN overview To prevent these keys from being guessed or calculated by a third party, a key is a large number. Encryption and authentication (or session) keys are unique to each VPN security association you create. Once generated, these keys are exchanged (either automatically or manually) between the sites, so that each end of the VPN knows the other end’s keys. To generate key pairs, the Sidewinder G2 gives you two options: Manual key generation — If the remote site is not Internet Key Exchange (IKE)-compliant, you may want to choose the manual method of key generation. With this method, the Sidewinder G2 provides randomly-generated encryption and authentication keys (or you can create your own) which you must copy and pass to the remote end of the VPN via secure e-mail, diskette, or telephone. Repeat this process each time you generate keys. Manual keys are more labor intensive than automatic keys and rarely used. Automatic key generation using IKE — If the remote end of your VPN uses the IKE protocol, the Sidewinder G2 can manage the generation of session keys between sites automatically. This process also regularly changes the keys to avoid key-guessing attacks. Automatic keys are very common in today’s network environments. Authenticating IKE VPNs If you are using manual key generation, each time you generate session keys you must communicate directly with the other end of the VPN via telephone, diskette, or e-mail. By contacting the remote end of the VPN each time you change session keys, you manually verify that the remote end is actually whom they claim to be. With automatic key generation, once you gather the initial information for the remote end of the VPN, there is no further direct contact between you and the remote end of the VPN. Session keys are automatically and continually generated and updated based on this initial identifying information. As a result, the Sidewinder G2 requires a way to assure that the machine with which you are negotiating session keys is actually whom they claim to be - a way to authenticate the other end of the VPN. To allow automatic key generation, the Sidewinder G2 offers the following authentication techniques: Configuring Virtual Private Networks 13-5
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ADMINISTRATION GUIDE
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Copyright © 2005 Secure Computing
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Other Terms and Conditions This pro
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Table of Contents Chapter 1: Introd
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Table of Contents Enabling and disa
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Table of Contents Creating SNMP App
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Table of Contents About Sidewinder
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Table of Contents Configuring the S
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Table of Contents Active connection
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Table of Contents RIP with the Side
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Who should read this guide What is
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Chapter title Description Chapter 1
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Online help Where to find additiona
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C HAPTER 1 Introduction About this
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Figure 1-2. Protecting multiple net
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The Type Enforced environment Table
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Figure 1-3. Example of domain separ
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Additional Sidewinder G2 operating
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Proxy software and access control A
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C HAPTER 2 Administrator’s Overvi
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Figure 2-1. Sidewinder G2 administr
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Figure 2-2. Admin Console Login win
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Figure 2-3. Feature Notification wi
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About the top portion of the Admin
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Admin Console conventions Admin Con
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Figure 2-5. File Editor window Abou
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Figure 2-7. Backup File window Ente
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Remote administration using Secure
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Figure 2-10. sshd Server Configurat
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Administering Sidewinder G2 using T
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C HAPTER 3 General System Tasks Abo
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Figure 3-1. System Shutdown window
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Setting up and maintaining administ
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Figure 3-3. Administrator Informati
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Changing passwords Setting the syst
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Using system roles to access type e
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Configuration file backup and resto
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What is backed up and restored What
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Configuration file backup and resto
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Activating the Sidewinder G2 licens
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From a workstation that has Web acc
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Figure 3-8. Firewall License: Compa
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Figure 3-10. Firewall License: Enro
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Protected host licensing and the Ho
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Figure 3-11. Determining which VPN
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Table 3-3. Sidewinder G2 servers Se
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Configuring the synchronization ser
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Figure 3-14. Scanner: Advanced tab
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Figure 3-15. Scanner: Signature tab
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Configuring the shund server Figure
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Figure 3-18. IDS Configuration: Shu
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Figure 3-20. Software Management: I
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Loading and installing patches 5. C
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Loading and installing patches 3. S
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Modifying the burb configuration 2.
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Modifying the Configuration tab Mod
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About the Aliases: New/ Modify Netw
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Modifying the static route About th
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About the SSL certificate fields fo
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Figure 3-26. UPS Configuration wind
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C HAPTER 4 Understanding Policy Con
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Figure 4-2. Example of active rules
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Policy configuration basics The fol
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Rule elements Network objects—Ne
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Figure 4-4. User Groups user group
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Rule elements If an organization re
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Example of a rule that uses a servi
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Application Defenses You can also c
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Proxy rule basics Table 4-4. Applic
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Proxy rule basics the user request
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Proxy rule basics Table 4-5 summari
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Table 4-7. Proxy rules for sample c
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Table 4-9. Proxy rules for the adva
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Mutually exclusive rules for Transp
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Figure 4-7. IP Filtering on non-TCP
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Figure 4-8. IP Filtering on TCP/UDP
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Setting the IP Filter NAT port rewr
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Figure 4-11. "Source port" NAT IP F
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C HAPTER 5 Creating Rule Elements A
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Creating users and user groups Mod
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About the Group Information tab Abo
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About the User Password tab Creatin
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Figure 5-4. User Group Membership w
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Figure 5-6. New Network Object wind
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Entering domain information Figure
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Figure 5-9. IP Address network obje
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About the Netmap Members window Cre
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Figure 5-12. Network Object: netgro
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Creating service groups Figure 5-14
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C HAPTER 6 Configuring Application
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Viewing Application Defense informa
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Figure 6-2. Application Defense: We
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Creating Web or Secure Web Applicat
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Figure 6-5. Web/Secure Web: HTTP Re
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Figure 6-6. Web/Secure Web: MIME/Vi
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Creating Web Cache Application Defe
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Creating Mail Application Defenses
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Figure 6-10. Mail Size tab Creating
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Creating Mail Application Defenses
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Figure 6-12. Mail MIME/ Virus tab A
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Configuring MIME filtering rules Cr
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Creating Citrix Application Defense
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Creating FTP Application Defenses F
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Figure 6-16. Application Defenses:
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Creating Multimedia Application Def
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Figure 6-18. Application Defenses:
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Creating SOCKS Application Defenses
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Creating SNMP Application Defenses
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Figure 6-22. Example of OID numberi
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Figure 6-24. Application Defense Gr
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Configuring connection properties d
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C HAPTER 7 Creating Rules and Group
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Viewing rules and rule groups You c
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Entering information on the Proxy R
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Creating proxy rules 5. [Optional]
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Figure 7-4. Proxy Rule: Time tab Cr
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Figure 7-5. Proxy Rule: Application
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Figure 7-6. IP Filter Rules window
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About the IP Filter Source/ Dest ta
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Figure 7-8. IP Filter Time tab Crea
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Creating and managing rule groups C
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Figure 7-10. Modify Groups window A
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Figure 7-11. Active Rules window Ab
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Figure 7-13. IP Filter General Prop
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C HAPTER 8 Configuring Proxies Abou
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Proxy basics Important: Network att
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Redirected proxy connections Config
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Figure 8-2. Address redirection for
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Standard Sidewinder G2 proxies Prox
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Proxy Name Type and Port Descriptio
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Proxy Name Type and Port Descriptio
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Notes on selected proxy configurati
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Notes on using the FTP proxy Notes
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Sun RPC proxy considerations Notes
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Figure 8-5. News server behind the
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Proxy Name—Displays the name of t
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Figure 8-7. ica proxy Advanced tab
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Configuring connection ports Settin
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C HAPTER 9 Setting Up Authenticatio
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Administrator authentication Authen
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Supported authentication methods Su
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Supported authentication methods Wh
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Authentication process overview Aut
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Users, groups, and authentication C
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Configuring authentication services
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Figure 9-1. SSO Cached Authenticati
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Figure 9-3. LDAP configuration wind
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Figure 9-4. Password Configuration
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Adding or modifying a RADIUS server
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Figure 9-7. SecurID Configuration w
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Figure 9-8. SNK Configuration windo
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Adding or modifying a Windows domai
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Configuring SSO b. In the Edit Logi
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Setting up authentication for servi
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Setting up authentication for admin
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Allowing users to change their pass
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. Select Manual Proxy Configuration
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C HAPTER 10 Domain Name System (DNS
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What is DNS? In a hosted DNS config
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Figure 10-1. Mail exchanger example
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Enabling and disabling your DNS ser
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Managing your current DNS configura
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Configuring hosted DNS servers Figu
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Figure 10-6. DNS Server Configurati
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Entering information on the Advance
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Figure 10-7. DNS Zones window Confi
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About the Zone List window About th
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Figure 10-8. Master Zone Attributes
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Adding a forward lookup sub-domain
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Figure 10-9. Master Zone Contents t
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Adding a new forward lookup entry C
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Reconfiguring DNS Reconfiguring DNS
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Figure 10-10. Reconfigure transpare
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About the Reconfiguring DNS: Sidewi
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Manually editing DNS configuration
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C HAPTER 11 Electronic Mail About t
Page 377 and 378: Overview of e-mail on Sidewinder G2
Page 379 and 380: Sendmail differences on Sidewinder
Page 381 and 382: Managing sendmail Managing sendmail
Page 383 and 384: Figure 11-2. Reconfigure Mail windo
Page 385 and 386: Figure 11-3. Sidewinder G2 mailerta
Page 387 and 388: Configuring advanced antispam optio
Page 389 and 390: Configuring the policy.cfg file Con
Page 391 and 392: About the COPY action Configuring a
Page 393 and 394: Configuring advanced anti-spam opti
Page 395 and 396: Redirecting mail to a different des
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Page 401 and 402: Managing mail queues Managing mail
Page 403 and 404: C HAPTER 12 Setting Up Web Services
Page 405 and 406: Figure 12-3. Access to the internal
Page 407 and 408: Figure 12-5. Option 2: The Web prox
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Page 411 and 412: Using the HTTP proxy 4. Create an H
Page 413 and 414: Using the Web proxy server Caching
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Page 417 and 418: Figure 12-12. Web Proxy Server wind
Page 419 and 420: Configuring Web Proxy Server HTTP f
Page 421 and 422: Configuring browsers for the Web pr
Page 423 and 424: Internet Explorer 5.x/6.x Configuri
Page 425 and 426: 1 C HAPTER 13 Configuring Virtual P
Page 427: Protecting your information What ar
Page 431 and 432: Configuring hardware acceleration f
Page 433 and 434: Sidewinder G2 VPN overview Implemen
Page 435 and 436: Configuring the ISAKMP server Figur
Page 437 and 438: Configuring the Certificate server
Page 439 and 440: Understanding virtual burbs Underst
Page 441 and 442: Understanding virtual burbs You can
Page 443 and 444: Figure 13-5. Client Address Pools A
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Page 451 and 452: Adding or modifying a client identi
Page 453 and 454: Configuring Certificate Management
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Page 459 and 460: Figure 13-8. Remote Identities tab
Page 461 and 462: Figure 13-9. Firewall certificates
Page 467 and 468: Figure 13-11. SSL Certificates tab
Page 469 and 470: Figure 13-3. Load Certificate for P
Page 471 and 472: Figure 13-13. Import Remote Certifi
Page 473 and 474: Figure 13-14. Export Firewall Certi
Page 475 and 476: Configuring VPN Security Associatio
Page 477 and 478: Figure 13-16. Security Associations
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Configuring VPN Security Associatio
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Configuring password information on
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Entering Certificate + Certificate
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Entering Single Certificate informa
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Configuring VPN Security Associatio
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Example VPN Scenarios Example VPN S
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Example VPN Scenarios How it is don
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Example VPN Scenarios All clients
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Example VPN Scenarios c. Click New.
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The assumptions This VPN scenario a
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Example VPN Scenarios 2. In the Adm
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Example VPN Scenarios a. On the Cer
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C HAPTER 14 Configuring the SNMP Ag
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Figure 14-2. Community name within
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SNMP and Sidewinder G2 IPSEC_FAILU
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Figure 14-3. MIBs supported by the
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Defining a community name Setting u
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Communication with systems in an ex
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C HAPTER 15 One-To-Many Clusters Ab
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Overview DNS services must be conf
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Figure 15-2. Sample network configu
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Configuring One-To-Many b. In the P
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Configuring One-To-Many 3. In the R
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About the Modify Primary Address wi
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Understanding the One-To-Many tree
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Understanding the One-To-Many tree
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C HAPTER 16 High Availability About
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HA configuration options HA configu
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You can configure failover HA in on
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Configuring HA — DNS configuratio
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Configuring HA 8. Select the HA con
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Configuring HA Cluster ID—Select
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Joining a Sidewinder G2 to an exist
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Configuring HA 8. Click Next. The S
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Removing the primary from an HA clu
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Figure 16-3. Special HA and Interfa
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About the Common Parameters tab Man
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Changing the multicast address Mana
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Figure 16-2. Local Parameters tab A
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Managing an HA cluster Scheduling a
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Connecting directly to a secondary/
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C HAPTER 17 Alarm Events and Respon
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Table 17-1. Alarm event column desc
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Filter Name Description Configuring
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Configuring alarm events and event
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Figure 17-3. Event Response tab Abo
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Configuring alarm events and event
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Example alarm event scenario Exampl
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Sample Strikeback results Sample St
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Ignoring network probe attempts Ign
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Checking system status Checking sys
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Rlg0 7418 p2 IW+ 0:01.30.u (tcsh) t
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Network interfaces Checking network
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Checking network status ; Dig 2.1
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C HAPTER 18 Monitoring, Auditing, a
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Monitoring Sidewinder G2 status Fig
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Auditing on the Sidewinder G2 Audit
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Figure 18-3. Audit Viewing: View Mo
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Figure 18-4. Snapshot Audit Data wi
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Figure 18-5. Export Audit Data wind
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Figure 18-6. Audit Filtering tab Ab
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Filter Type Description Auditing on
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Example 2: Filtering for services a
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Field Description src_burb Specify
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Logging application messages using
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Generating and viewing reports usin
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Figure 18-7. Firewall Reports windo
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Report Type Description Generating
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Report Type Description Generating
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Using third party reporting tools U
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Using third party reporting tools 3
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A A PPENDIX A Command Line Referenc
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Sidewinder G2 area Commands Area De
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Working with files on the Sidewinde
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Changing a file’s type (chtype) W
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Understanding automatic (cron) jobs
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Understanding automatic (cron) jobs
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A A PPENDIX B Setting Up Network Ti
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Figure B-2. Sidewinder G2 as an NTP
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Figure B-4. NTP conflict: Sidewinde
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Configuring NTP on a Sidewinder G2
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A A PPENDIX C Configuring Dynamic R
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Overview All OSPF routers on a netw
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Figure C-3. Sidewinder G2 within OS
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Figure C-5. OSPF Properties tab Abo
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Figure C-6. OSPF Area tab Setting u
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Authentication Information window F
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Configuring "passive" OSPF Other im
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A A PPENDIX D Configuring Dynamic R
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RIP processing on the Sidewinder G2
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RIP with the Sidewinder G2 using tr
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If connection is lost between Route
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Figure D-4. RIP with the Sidewinder
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RIP with the Sidewinder G2 NOT usin
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Configuring RIP on the Sidewinder G
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Enabling/ disabling the routed serv
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A A PPENDIX E Setting Up SmartFilte
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Subscribing to the SmartFilter Cont
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Figure E-1. SmartFilter window: Gen
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Figure E-2. SmartFilter Advanced ta
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Editing the SmartFilter files Table
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Table E-2. Category Codes Editing t
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A A PPENDIX F Basic Troubleshooting
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Restoring access to the Admin Conso
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Backing up system files The Sidewin
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Performing an incremental backup Ba
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Table F-2. Sidewinder G2 restore sc
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Restoring system files Performing a
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Table F-3. Restore Script Commands
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To add hardware, follow these steps
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Re-imaging your Sidewinder G2 Syste
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If you forget your administrator pa
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Interpreting beep patterns Interpre
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What you hear What it means What yo
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Troubleshooting proxy rules To dete
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Starting the rule monitoring tool (
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Troubleshooting High Availability T
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Troubleshooting High Availability N
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Troubleshooting High Availability N
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Why did NTP stop? Troubleshooting N
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R EFERENCE Glossary ACE/Server A se
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Glossary BSD/OS The operation syste
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Glossary event response A response
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Glossary internal DNS Manages DNS i
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Glossary network-layer proxy Also k
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Glossary proxy A software agent tha
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Glossary SecureOS The UNIX-based op
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URL (universal resource locator) Gl
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A R EFERENCE Index A record (addres
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ackup_file_list 3-15 complete (full
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checking 3-12 creator A-12 current
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overview 1-12 IP sniffing 1-2 IP sp
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NNTP 8-19 nntp proxy 8-11 non-trans
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to operational kernel command 3-4 r
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smartfilter.site file E-9 SMTP 11-2
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certificate authority 13-27 certifi
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The Sidewinder G2 ® Security Appli
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