Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

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Chapter 14: Configuring Virtual Private Networks Sidewinder G2 VPN overview Sidewinder G2 VPN overview 394 Figure 171: Sidewinder G2s, an IPSec or IKE remote site, or a VPN client machine The Sidewinder G2 VPN solution provides secure data transmission through an encryption and decryption process. The Sidewinder G2 uses the Internet Key Exchange (IKE) to support this process. The Sidewinder G2 also supports the use of manually configured encryption keys. Toronto London Certificate server Internet Any IPSec remote site VPN client Sydney One of the most advanced features of the Sidewinder G2 VPN solution is the fact that VPN has been embedded into the architecture, making it an operating characteristic of the OS. This integration not only lets you apply access rules to VPNs in exactly the same way you do for physically connected networks but also means that you use the Sidewinder G2 VPN solution to coordinate corporate-wide network security policies. As companies expand to new locations and employees spend more time working out of the office, VPN solutions are becoming more and more important to businesses. Consider the value of encrypting and authenticating data in these situations: • passing traffic from Sidewinder G2 to Sidewinder G2 between offices located in different cities. • passing traffic from employees working remotely to your network.
Protecting your information What are encryption and authentication? An introduction to IPSec technology Chapter 14: Configuring Virtual Private Networks Sidewinder G2 VPN overview The Internet is a broadcast medium that is used to send information. While information is in transit, anyone can choose to monitor or intercept this information. Sending information beyond your Sidewinder G2 via the Internet is like sending an unsealed envelope of important information via a courier service: you must trust that the courier will not read or steal the information. To address this danger, an organization known as IETF (Internet Engineering Task Force) developed a standard for protecting data on unprotected (or untrusted) networks such as the Internet. The standard has become known as IPSec, meaning Internet-Protocol Security. In brief, IPSec calls for encrypting the data before it leaves the local host, then decrypting it (removing its “cloak” of encryption) when it is received at the destination or remote host. Once it is decrypted, the data assumes its original form and can be read as intended. No matter how long or circuitous its route through the Internet, the data remains private by virtue of its encryption. The two main components of IPSec security are encryption and authentication. • Encryption — Encryption is the means by which plain text is “cloaked.” It ensures that the transmitted data remains private and unreadable until properly decrypted. The Sidewinder G2 uses an encryption key to encipher and decipher each unit of data sent between your site and the “partner” or remote VPN site. (See “About IPSec keys” on page 396.) • Authentication — VPN authentication prevents unauthorized individuals from tampering with the contents of the data being transmitted. It also prevents them from creating messages that claim to come from a particular place but are actually sent from somewhere else (such as the hacker’s home computer). Authentication is accomplished through two methods: – Data-integrity checking, which allows the receiver to verify whether the data was modified or corrupted during transmission. – Sender identification, which allows the receiver to verify whether the data transmission originated from the source that claims to have sent it. 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. 395
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ADMINISTRATION GUIDE
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Copyright © 2006 Secure Computing
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Other Terms and Conditions This pro
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CONTENTS Preface . . . . . . . . .
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Table of Contents Modifying the sta
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Table of Contents Configuring the S
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Table of Contents About mail exchan
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Table of Contents Configuring and d
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Table of Contents CHAPTER 20 IPS At
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Table of Contents APPENDIX F Basic
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PREFACE Who should read this guide
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Online help Preface The Sidewinder
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1 CHAPTER Introduction In this chap
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Figure 2: Protecting multiple netwo
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Chapter 1: Introduction The Type En
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Type Enforced attributes Chapter 1:
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Figure 4: Multiple Type Enforced ar
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Chapter 1: Introduction Additional
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Chapter 1: Introduction Additional
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Network Services Sentry (NSS) Chapt
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2 CHAPTER Administrator’s Overvie
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Admin Console basics Chapter 2: Adm
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Figure 7: Admin Console Login windo
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Figure 9: Main Admin Console menu M
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Admin Console conventions Chapter 2
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Figure 11: Open File window Opening
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Figure 14: Find/Replace window Ente
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Chapter 2: Administrator’s Overvi
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Chapter 2: Administrator’s Overvi
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Figure 15: sshd Server Configuratio
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To access the trusted Telnet server
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3 CHAPTER General System Tasks In t
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Figure 16: System Shutdown window E
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Setting up and maintaining administ
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Figure 18: Administrator Informatio
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Changing passwords Setting the syst
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Using system roles to access type e
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Figure 20: Configuration file backu
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Chapter 3: General System Tasks Con
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Activating the Sidewinder G2 licens
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Chapter 3: General System Tasks Act
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Figure 23: Firewall License: Compan
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Figure 25: Firewall License: Enroll
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Chapter 3: General System Tasks Pro
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Enabling and disabling servers Figu
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Server Name Notes Chapter 3: Genera
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Configuring virus scanning services
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Figure 32: IDS Server window About
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Figure 34: Software Management: Sum
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Chapter 3: General System Tasks Loa
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Chapter 3: General System Tasks Loa
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Modifying the interface configurati
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About the Interface Status window M
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Chapter 3: General System Tasks Mod
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About the Aliases: New/Modify Netwo
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About the Static: Route window Conf
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About the SSL certificate fields fo
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Enabling/disabling the UPS server C
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4 CHAPTER Understanding Policy Conf
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Figure 45: Example of active rules
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Chapter 4: Understanding Policy Con
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Figure 47: User Groups user group n
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Figure 48: Netgroup Subnet objects
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Application Defenses Table 11: Samp
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Simple proxy rule examples Chapter
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Table 17: Proxy rules for the advan
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IP Filter rule basics Chapter 4: Un
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Figure 52: Example network Chapter
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Figure 53: Normal NAT IP Filter rul
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5 CHAPTER Creating Rule Elements In
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Chapter 5: Creating Rule Elements C
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About the Group Information tab Abo
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About the User Password tab Chapter
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About the User Group Membership win
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Figure 60: New Network Object windo
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Figure 62: Host network object wind
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Figure 63: IP Address network objec
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Figure 65: Subnet network object wi
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Figure 67: Group Membership window
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About the Service Groups window Cha
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6 CHAPTER Configuring Application D
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Chapter 6: Configuring Application
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About the URL Control tab Chapter 6
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Figure 73: Web/Secure Web: HTTP Rep
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Figure 74: Web/Secure Web: MIME/Vir
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Figure 76: Web/Secure Web: SmartFil
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About the Keyword Search tab Chapte
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Figure 81: Mail (Sendmail) MIME/Vir
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Configuring MIME filtering rules Ch
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Creating Mail (SMTP proxy) Defenses
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Figure 84: Mail (SMTP proxy): Desti
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Creating Citrix Application Defense
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Configuring the FTP Enforcements ta
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Configuring Virus/Spyware filtering
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Creating IIOP Application Defenses
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Configuring the H.323 Filter tab Ch
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About the Service Name (SID): New S
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Creating SOCKS Application Defenses
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Figure 95: SNMP v1: OID Editing win
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Creating Standard Application Defen
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Configuring connection properties C
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Configuring connection ports Chapte
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7 CHAPTER Configuring Network Defen
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Figure 100: Network Defense window
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About the Network Defenses: TCP tab
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Configuring the UDP Network Defense
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Configuring the ICMP Network Defens
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Configuring the ARP Network Defense
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8 CHAPTER Creating Rules and Rule G
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About the Duplicate Rule Name windo
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Chapter 8: Creating Rules and Rule
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Figure 110: Proxy Rule: Authenticat
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Entering information on the Time ta
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Figure 113: IP Filter Rules window
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Figure 114: IP Filter Rules Source/
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Figure 115: IP Filter Time tab Abou
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Chapter 8: Creating Rules and Rule
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Figure 117: Modify Groups window Ch
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Selecting your active policy rules
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Figure 120: IP Filter General Prope
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9 CHAPTER Configuring Proxies In th
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Chapter 9: Configuring Proxies Prox
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Redirected proxy connections Chapte
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Figure 123: Port redirection for in
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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 Chapte
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HTTP/HTTPS considerations Chapter 9
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Figure 124: News server in front of
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About the T.120 proxy Chapter 9: Co
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Chapter 9: Configuring Proxies Note
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Figure 126: Proxies window About th
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Figure 127: ica proxy Advanced tab
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Configuring connection ports Chapte
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10 CHAPTER Setting Up Authenticatio
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Administrator authentication Chapte
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Supported authentication methods Ch
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SafeWord authentication Chapter 10:
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Chapter 10: Setting Up Authenticati
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Users, groups, and authentication C
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Figure 131: SSO Cached Authenticati
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Figure 133: Password Configuration
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Entering information on the RADIUS
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Adding or modifying a SafeWord serv
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Figure 137: SNK Configuration windo
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Entering information on the Windows
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Entering information on the Single
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Setting up authentication for servi
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Setting up authentication for Web s
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11 CHAPTER DNS (Domain Name System)
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About Sidewinder hosted DNS Chapter
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Figure 140: Mail exchanger example
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Advanced configurations Enabling an
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Figure 141: Transparent DNS Configu
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Chapter 11: DNS (Domain Name System
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Entering information on the Forward
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Adding an IP address Figure 146: DN
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About the Zone List window About th
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Figure 147: Master Zone Attributes
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Adding a forward lookup sub-domain
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Figure 148: Master Zone Contents ta
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Adding a new forward lookup entry C
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Table 26: DNS configuration options
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Figure 150: Reconfiguring Sidewinde
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About the Reconfiguring DNS: Sidewi
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Page 371 and 372: 12 CHAPTER Electronic Mail In this
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Page 375 and 376: Sendmail differences on Sidewinder
Page 377 and 378: Reconfiguring mail Figure 152: Reco
Page 379 and 380: Managing sendmail Figure 153: sendm
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Page 383 and 384: Figure 155: Spamfilter: Whitelist C
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Page 387 and 388: About the COPY action Chapter 12: E
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Page 391 and 392: Other sendmail features Creating a
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Page 395 and 396: Allowing or denying mail on a user
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Page 405 and 406: Setting up Web access using the HTT
Page 407 and 408: Using the Web proxy server Figure 1
Page 409 and 410: Configuring the Web proxy server Fi
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Page 413 and 414: Configuring Web Proxy Server HTTP f
Page 415 and 416: Configuring browsers for the Web pr
Page 417 and 418: Certain browsers on UNIX Chapter 13
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Page 423 and 424: Authenticating IKE VPNs Chapter 14:
Page 425 and 426: Configuring a VPN client Chapter 14
Page 427 and 428: Authentication Summary Automatic ke
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Page 431 and 432: Understanding virtual burbs Chapter
Page 433 and 434: Create the virtual burb Configure p
Page 435 and 436: About the Client Address Pools wind
Page 437 and 438: Adding or modifying a subnet addres
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Page 445 and 446: Single certificate versus Certifica
Page 447 and 448: Adding a Certificate Authority Chap
Page 449 and 450: Figure 180: Remote Identities tab A
Page 451 and 452: Figure 181: Firewall certificates A
Page 453 and 454: Figure 182: Remote certificates def
Page 457 and 458: Selecting a new proxy certificate I
Page 459 and 460: Figure 185: Import Firewall Certifi
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Page 465 and 466: About the Security Associations win
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Entering Certificate + Certificate
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Entering Manual information on the
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Entering information on the Advance
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Figure 191: VPN between two corpora
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Figure 192: One VPN association per
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Chapter 14: Configuring Virtual Pri
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Figure 193: One VPN association for
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15 CHAPTER Configuring the SNMP Age
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Figure 195: Community name within a
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Figure 196: MIBs supported by the S
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Defining a community name Defining
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Communication with systems in an ex
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16 CHAPTER One-To-Many Clusters In
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Considerations when using One-To-Ma
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Configuring One- To-Many Chapter 16
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Figure 201: One To Many Management
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Chapter 16: One-To-Many Clusters Co
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Chapter 16: One-To-Many Clusters Co
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Chapter 16: One-To-Many Clusters Un
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17 CHAPTER High Availability In thi
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HA configuration options Chapter 17
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You can configure failover HA in on
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Configuring the heartbeat burbs Cha
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Chapter 17: High Availability Confi
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Removing a secondary/standby from a
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Managing an HA cluster Features tha
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Chapter 17: High Availability Manag
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Changing the multicast address Chap
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About the Local Parameters tab Chap
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Chapter 17: High Availability Manag
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18 CHAPTER Monitoring In this chapt
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About the dashboard Viewing device
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Figure 211: System information: Dis
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Figure 213: Network Traffic: Interf
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Viewing IPS attack and system event
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Figure 218: Attacks by Service wind
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Monitoring Sidewinder G2 status usi
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finger Chapter 18: Monitoring Monit
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dig Chapter 18: Monitoring Monitori
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19 CHAPTER Auditing and Reporting I
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Auditing on the Sidewinder G2 Chapt
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Figure 221: Audit Viewing: View Mod
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Chapter 19: Auditing and Reporting
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Figure 224: Audit Veiwing: Filterin
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Attack Description Application Defe
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Attack Description Chapter 19: Audi
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Example 2: Filtering for services a
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Understanding audit messages Chapte
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Generating reports using the Admin
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Figure 226: Show Report window Tabl
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Report type Description Chapter 19:
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Report type Description Table 37: A
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Generating reports using Sidewinder
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20 CHAPTER IPS Attack and System Ev
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About the IPS Attack Responses wind
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Attack Description Application Defe
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Chapter 20: IPS Attack and System E
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Figure 230: Attack Responses: Setti
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Figure 232: System Responses Modify
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Event Description system critical a
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Figure 233: System Responses: Respo
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Sidewinder G2 SNMP traps Chapter 20
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Chapter 20: IPS Attack and System E
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A APPENDIX Command Line Reference I
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Sidewinder G2 area Commands Area De
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About editing Sidewinder G2 files A
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Changing file types in the operatio
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etc/monthly Appendix A: Command Lin
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CRL and certificate retrieval cron
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B APPENDIX Setting Up Network Time
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Figure 235: Sidewinder G2 as an NTP
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Figure 237: NTP conflict: Sidewinde
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Using command line: Appendix B: Set
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C APPENDIX Configuring Dynamic Rout
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Figure 238: Three OSPF protocol pha
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Figure 240: Sidewinder G2 within OS
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Figure 242: OSPF Properties tab Abo
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Configuring the OSPF Area: Interfac
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Configuring the OSPF Areas: Network
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D APPENDIX Configuring Dynamic Rout
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RIP processing on the Sidewinder G2
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Appendix D: Configuring Dynamic Rou
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RIP with Sidewinder G2 not using tr
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Enabling/ disabling the routed serv
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E APPENDIX Setting Up SmartFilter S
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4 Click Evaluate this version. 5 Co
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Figure 252: SmartFilter for Web and
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Appendix E: Setting Up SmartFilter
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F APPENDIX Basic Troubleshooting In
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Restoring access to the Admin Conso
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Appendix F: Basic Troubleshooting B
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Restoring system files Appendix F:
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8 [Conditional] If needed, change p
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Appendix F: Basic Troubleshooting R
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Adding hardware to an active Sidewi
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Recovering when the licensed NIC fa
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What to do if the boot process fail
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If you forget your administrator pa
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Interpreting beep patterns Table 45
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Troubleshooting proxy rules Appendi
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Appendix F: Basic Troubleshooting T
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Understanding FTP and Telnet connec
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Active firewall list: 10.10.10.7 St
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Appendix F: Basic Troubleshooting T
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Why did NTP stop? Appendix F: Basic
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GLOSSARY ACE/Server A server made b
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Glossary burb A set of one or more
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Glossary external DNS External DNS
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ISAKMP (internet security associati
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ODBC (Open Database Connectivity) G
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eference implementation An IETF ter
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Glossary subnet A network addressin
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INDEX A A record (address record) 3
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B backup backup_file_list 51 comple
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domains access 7 Admn 8 checking 49
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Internet server 317 InterNIC 529 IP
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networks connections report 527 int
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R RADIUS authentication 281, 292 Re
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Sidewinder G2 Enterprise Manager xx
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user passwords 137 users changing p
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The Sidewinder G2 ® Security Appli
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