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

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IP Filter rule basics 4-30 Understanding Policy Configuration Using IP Filter to filter TCP/UDP traffic Security Alert: Secure Computing strongly recommends that you use IP Filter only for non-TCP/UDP protocols, such as Vines, PPTP, NES, etc. Using IP Filter for a TCP/UDP protocol will, in most cases, severely degrade the effectiveness of the Sidewinder G2 and will expose your network to security hazards. When a TCP or UDP packet is received on one of the Sidewinder G2 network interfaces, the Sidewinder G2 checks an IP Filter session record database to determine if an active session record exists for this traffic. Note: The following bullets assume that session tracking is enabled. If an active session record exists, the following occurs: — Perform address rewriting, if required — Perform session processing — Forward packet directly to the correct destination interface without any additional processing If no active session record exists, the Sidewinder G2 checks the IP Filter allow TCP/allow UDP database to determine if an allow rule exists that will permit this traffic to be forwarded. If an allow rule does not exist, normal Sidewinder G2 processing is performed on the packet. If an allow rule does exist, the following occurs: — Add a session record to the session record database — Perform Network Address Translation (NAT) if required — Session processing occurs — Forward packet directly to the correct destination interface without any additional processing by the Sidewinder G2 The flowchart in Figure 4-8 illustrates the complete process.
Figure 4-8. IP Filtering on TCP/UDP packets TCP/UDP packet in does a session exist? yes translate as required perform session processing forward message w/o further processing no match “allow” rule? add a session perform additional processing Using NAT and redirection for IP Filter rules IP Filter rule basics Many organizations use network address translation (NAT) and/or redirection to prevent internal addresses from being visible to external users. On the Sidewinder G2, NAT refers to rewriting the source address of the packet to the external address of the Sidewinder G2 (or an address you specify). This allows you to protect (or hide) the actual client source address, and in the case of non-routable source addresses (such as 10.0.0.0) rewrite it to an address that can be routed on the Internet. Redirection refers to rewriting the destination address of an incoming packet to a redirect host for delivery. yes no Sidewinder G2 out Understanding Policy Configuration 4-31
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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
Page 111 and 112: Configuring the shund server Figure
Page 113 and 114: Figure 3-18. IDS Configuration: Shu
Page 115 and 116: Figure 3-20. Software Management: I
Page 117 and 118: Loading and installing patches 5. C
Page 119 and 120: Loading and installing patches 3. S
Page 121 and 122: Modifying the burb configuration 2.
Page 123 and 124: Modifying the Configuration tab Mod
Page 125 and 126: About the Aliases: New/ Modify Netw
Page 127 and 128: Modifying the static route About th
Page 129 and 130: About the SSL certificate fields fo
Page 131 and 132: Figure 3-26. UPS Configuration wind
Page 133 and 134: C HAPTER 4 Understanding Policy Con
Page 135 and 136: Figure 4-2. Example of active rules
Page 137 and 138: Policy configuration basics The fol
Page 139 and 140: Rule elements Network objects—Ne
Page 141 and 142: Figure 4-4. User Groups user group
Page 143 and 144: Rule elements If an organization re
Page 145 and 146: Example of a rule that uses a servi
Page 147 and 148: Application Defenses You can also c
Page 149 and 150: Proxy rule basics Table 4-4. Applic
Page 151 and 152: Proxy rule basics the user request
Page 153 and 154: Proxy rule basics Table 4-5 summari
Page 155 and 156: Table 4-7. Proxy rules for sample c
Page 157 and 158: Table 4-9. Proxy rules for the adva
Page 159 and 160: Mutually exclusive rules for Transp
Page 161: Figure 4-7. IP Filtering on non-TCP
Page 165 and 166: Setting the IP Filter NAT port rewr
Page 167 and 168: Figure 4-11. "Source port" NAT IP F
Page 169 and 170: C HAPTER 5 Creating Rule Elements A
Page 171 and 172: Creating users and user groups Mod
Page 173 and 174: About the Group Information tab Abo
Page 175 and 176: About the User Password tab Creatin
Page 177 and 178: Figure 5-4. User Group Membership w
Page 179 and 180: Figure 5-6. New Network Object wind
Page 181 and 182: Entering domain information Figure
Page 183 and 184: Figure 5-9. IP Address network obje
Page 185 and 186: About the Netmap Members window Cre
Page 187 and 188: Figure 5-12. Network Object: netgro
Page 189 and 190: Creating service groups Figure 5-14
Page 191 and 192: C HAPTER 6 Configuring Application
Page 193 and 194: Viewing Application Defense informa
Page 195 and 196: Figure 6-2. Application Defense: We
Page 197 and 198: Creating Web or Secure Web Applicat
Page 201 and 202: Figure 6-5. Web/Secure Web: HTTP Re
Page 203 and 204: Figure 6-6. Web/Secure Web: MIME/Vi
Page 209 and 210: Creating Web Cache Application Defe
Page 211 and 212: 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
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Overview of e-mail on Sidewinder G2
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Sendmail differences on Sidewinder
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Managing sendmail Managing sendmail
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Figure 11-2. Reconfigure Mail windo
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Figure 11-3. Sidewinder G2 mailerta
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Configuring advanced antispam optio
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Configuring the policy.cfg file Con
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About the COPY action Configuring a
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Configuring advanced anti-spam opti
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Redirecting mail to a different des
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Other sendmail features You can con
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Figure 11-5. Type of relayed messag
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Managing mail queues Managing mail
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C HAPTER 12 Setting Up Web Services
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Figure 12-3. Access to the internal
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Figure 12-5. Option 2: The Web prox
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Figure 12-7. Standard (transparent)
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Using the HTTP proxy 4. Create an H
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Using the Web proxy server Caching
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Figure 12-10. Web proxy server wind
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Figure 12-12. Web Proxy Server wind
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Configuring Web Proxy Server HTTP f
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Configuring browsers for the Web pr
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Internet Explorer 5.x/6.x Configuri
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1 C HAPTER 13 Configuring Virtual P
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Protecting your information What ar
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Sidewinder G2 VPN overview To preve
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Configuring hardware acceleration f
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Sidewinder G2 VPN overview Implemen
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Configuring the ISAKMP server Figur
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Configuring the Certificate server
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Understanding virtual burbs Underst
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Understanding virtual burbs You can
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Figure 13-5. Client Address Pools A
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Figure 13-6. Client Address Pools:
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Adding or modifying a client identi
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Configuring Certificate Management
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Single certificate versus Certifica
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About the Certificate Authorities t
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Figure 13-8. Remote Identities tab
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Figure 13-9. Firewall certificates
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Figure 13-11. SSL Certificates tab
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Figure 13-3. Load Certificate for P
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Figure 13-13. Import Remote Certifi
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Figure 13-14. Export Firewall Certi
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Configuring VPN Security Associatio
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Figure 13-16. Security Associations
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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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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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