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Securing Communications!
SpeechTEK New York 2010!
Dan York, CISSP

   Director of Conversations, Voxeo

   Best Practices Chair, VoIP Security Alliance

   Author, Seven Deadliest UC Attacks!
About Dan York!



                                               www.voipsa.org
                         www.voxeo.com




                      www.blueboxpodcast.com     www.7ducattacks.com


© Voxeo Corporation
About Voxeo!

        Founded in 1999
        World’s largest hosted VoiceXML and CCXML platform – Over
         82,000 hosted ports globally; hundreds of premise deployments
        Over 150,000 developers using Voxeo platforms
        The Voxeo difference: Unlocked Communications, Customer
         Obsession Teams, Communications Passion
        www.voxeo.com




© Voxeo Corporation
The Change VoIP Brings!



                                 SIP              SIP
                                Proxy            Proxy
                                  A      SIP       B

                          SIP                             SIP




                      Alice                                Bob
                                Media (RTP, MSRP, etc.)




© Voxeo Corporation
The Larger Reality!



                      SIP           SIP             SIP             SIP         SIP
                      Proxy         Proxy           Proxy         Proxy         Proxy
                       A      SIP    B      SIP      C      SIP     D     SIP    N

          SIP                               Internet                                    SIP



                                    Media                   Media
  Alice                             Proxy                   Proxy                        Bob
                      Media           A           Media       B             Media




© Voxeo Corporation
Once Upon A Time!




                                   PSTN
                        PBX
                                  Gateways




                                  Physical
                      Voicemail
                                   Wiring




© Voxeo Corporation
1. Understand Your Ecosystem!

                                                         Mobile
                                                         Devices
                           IM                                                                 Application
                                                                       Internet                Servers
                        Networks
                                             Operating
                                             Systems
                                                            PSTN
                                  IP-PBX                                            VoIP
                                                           Gateways


                         Web                  IP                                               Social
                                                                      Firewalls
                        Servers             Network                                           Networks


                                                           Physical               Directory
                                Voicemail
                                                            Wiring                Servers

                                            Desktop
                       Email                 PCs                                           Database
                      Servers                                       CRM                     Servers
                                                                   Systems




© Voxeo Corporation
2. Understand Your Endpoints!

        IP Phones, Smartphones, Softphones

        What services are running on them?

        Default passwords?

        How do you patch/secure them?




© Voxeo Corporation
3. Secure Your Media!


                             SIP           SIP                   SIP
                            Proxy         Proxy                 Proxy
                              A     SIP     B     SIP             N

                      SIP                                               SIP




           Alice                          Eve                            Bob
                            Media                       Media




© Voxeo Corporation
Secure Media – Hop By Hop!



                                      Internet


                              Media              Media
Alice                         Proxy              Proxy           Bob
                      Media     A      Media       B     Media




© Voxeo Corporation
Secure Media – End to End!



                                      Internet


                              Media              Media
Alice                         Proxy              Proxy           Bob
                      Media     A      Media       B     Media




© Voxeo Corporation
4. Secure Your Signalling!



                       SIP           SIP                         SIP
                      Proxy         Proxy           Eve         Proxy
                        A     SIP     B     SIP           SIP     N

              SIP                                                       SIP




      Alice                                                              Bob
                                            Media




© Voxeo Corporation
Signalling Attacks!

        Toll Fraud

        Identity Theft




© Voxeo Corporation
Traditional Telephony!



                                       Internet




                                                  Carrier   PSTN
                          PBX




                      Corp	
  HQ	
  




© Voxeo Corporation
IP Communications!



                                     ITSP



                          Internet
              PBX

                                            PSTN

         Corp	
  HQ	
  




© Voxeo Corporation
Failover!



             PBX
                                    ITSP


        Corp	
  HQ	
  
                         Internet          PSTN



              PBX



           Office	
  
            A	
  



© Voxeo Corporation
Redundancy / Geography!

                                   ITSP
                                   (Boston)




                        Internet
            PBX                    ITSP
                                   (Paris)
                                              PSTN

       Corp	
  HQ	
  



                                   ITSP
                                   (Tokyo)




© Voxeo Corporation
5. Secure Your PSTN Connectivity!

        Attacks
          •  Toll Fraud
          •  Denial of Service
          •  Spam

        Solutions
          •  Encryption
          •  Strong Authentication
          •  Transport Security



© Voxeo Corporation
6. Secure Your Identity!

        Attacks
          •  Fraud
          •  Identity Theft
          •  Social Engineering

        Solutions
          •  Education
          •  Lock Down Spoofing
          •  Strong Identity



© Voxeo Corporation
7. Secure Distributed Systems!


                                                                     Laptop
                                                                       UC
                                                                      client
                                                        WiFi
                   UC
                 System
                               Firewall   Internet      Café
                                                       Router



              Corp	
  HQ	
  
                                             Mobile
                                              Data
                                             Network        Mobile
                                                             UC
                                                            client




© Voxeo Corporation
How Do You Securely Federate?!

                                                       Internet




                          Corporate                                        Corporate
                           Network                                          Network



                        UC                UC                          UC                  UC
                      System            System                      System              System



                Corp	
  HQ	
           Office	
  A	
                Corp	
  HQ	
         Office	
  A	
  

                           Company	
  A	
                                  Company	
  B	
  

© Voxeo Corporation
What if the Cloud Isnʼt There?!

                        Corporate
                                                               Internet
                         Network


                                                         IVR              Voicemail
              IM              IM              IM

          Presence        Presence        Presence

             Call            Call            Call
            Control         Control         Control




       Corp	
  HQ	
      Office	
  A	
     Office	
  B	
  




                         PSTN


© Voxeo Corporation
Questions About the Cloud!

        What kind of availability guarantees / Service Level Agreements (SLAs)
         does the platform vendor provide?

        What kind of geographic redundancy is built into the underlying
         network?

        What kind of network redundancy is built into the underlying network?

          What kind of physical redundancy is built into the data centers?

        What kind of monitoring does the vendor perform?

        What kind of scalability is in the cloud computing platform?

        What kind of security, both network and physical, is part of the
         computing platform?

        Finally, what will the vendor do if there is downtime? Will the downtime
         be reflected in your bill?

© Voxeo Corporation
The Way It Used To Be!




© Voxeo Corporation
Today...!                                                                ITSP
                                                                                         ITSP
                                                                                                        ITSP
                                                          ITSP
                                  ITSP

                                                                                            ITSP

                                                                                                                ITSP
                    ITSP
                                                       ITSP
                                                                          ITSP              ITSP
                                         ITSP
                                                                                                           ITSP



            ITSP                                       PSTN                       ITSP
                                     ITSP

            ITSP
                                                                                                 ITSP
                                                   ITSP            ITSP
                           ITSP

ITSP
                                                                                          ITSP
                                                                                                         ITSP

            ITSP                  ITSP      ITSP                        ITSP



                                                                                         ITSP       ITSP
ITSP                    ITSP                    ITSP             ITSP          ITSP
  © Voxeo Corporation
Resources!

        VoIP Security Alliance
          •  www.voipsa.org
          •  www.voipsa.org/blog


        Hacking Exposed: VoIP
          •  www.hackingvoip.com


        Seven Deadliest Unified Communications
         Attacks
          •  www.7ducattacks.com

© Voxeo Corporation
Securing Unified Communications Systems

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Securing Unified Communications Systems

  • 1. Securing Communications! SpeechTEK New York 2010! Dan York, CISSP
 Director of Conversations, Voxeo
 Best Practices Chair, VoIP Security Alliance
 Author, Seven Deadliest UC Attacks!
  • 2. About Dan York! www.voipsa.org www.voxeo.com www.blueboxpodcast.com www.7ducattacks.com © Voxeo Corporation
  • 3. About Voxeo!   Founded in 1999   World’s largest hosted VoiceXML and CCXML platform – Over 82,000 hosted ports globally; hundreds of premise deployments   Over 150,000 developers using Voxeo platforms   The Voxeo difference: Unlocked Communications, Customer Obsession Teams, Communications Passion   www.voxeo.com © Voxeo Corporation
  • 4. The Change VoIP Brings! SIP SIP Proxy Proxy A SIP B SIP SIP Alice Bob Media (RTP, MSRP, etc.) © Voxeo Corporation
  • 5. The Larger Reality! SIP SIP SIP SIP SIP Proxy Proxy Proxy Proxy Proxy A SIP B SIP C SIP D SIP N SIP Internet SIP Media Media Alice Proxy Proxy Bob Media A Media B Media © Voxeo Corporation
  • 6. Once Upon A Time! PSTN PBX Gateways Physical Voicemail Wiring © Voxeo Corporation
  • 7. 1. Understand Your Ecosystem! Mobile Devices IM Application Internet Servers Networks Operating Systems PSTN IP-PBX VoIP Gateways Web IP Social Firewalls Servers Network Networks Physical Directory Voicemail Wiring Servers Desktop Email PCs Database Servers CRM Servers Systems © Voxeo Corporation
  • 8. 2. Understand Your Endpoints!   IP Phones, Smartphones, Softphones   What services are running on them?   Default passwords?   How do you patch/secure them? © Voxeo Corporation
  • 9. 3. Secure Your Media! SIP SIP SIP Proxy Proxy Proxy A SIP B SIP N SIP SIP Alice Eve Bob Media Media © Voxeo Corporation
  • 10. Secure Media – Hop By Hop! Internet Media Media Alice Proxy Proxy Bob Media A Media B Media © Voxeo Corporation
  • 11. Secure Media – End to End! Internet Media Media Alice Proxy Proxy Bob Media A Media B Media © Voxeo Corporation
  • 12. 4. Secure Your Signalling! SIP SIP SIP Proxy Proxy Eve Proxy A SIP B SIP SIP N SIP SIP Alice Bob Media © Voxeo Corporation
  • 13. Signalling Attacks!   Toll Fraud   Identity Theft © Voxeo Corporation
  • 14. Traditional Telephony! Internet Carrier PSTN PBX Corp  HQ   © Voxeo Corporation
  • 15. IP Communications! ITSP Internet PBX PSTN Corp  HQ   © Voxeo Corporation
  • 16. Failover! PBX ITSP Corp  HQ   Internet PSTN PBX Office   A   © Voxeo Corporation
  • 17. Redundancy / Geography! ITSP (Boston) Internet PBX ITSP (Paris) PSTN Corp  HQ   ITSP (Tokyo) © Voxeo Corporation
  • 18. 5. Secure Your PSTN Connectivity!   Attacks •  Toll Fraud •  Denial of Service •  Spam   Solutions •  Encryption •  Strong Authentication •  Transport Security © Voxeo Corporation
  • 19. 6. Secure Your Identity!   Attacks •  Fraud •  Identity Theft •  Social Engineering   Solutions •  Education •  Lock Down Spoofing •  Strong Identity © Voxeo Corporation
  • 20. 7. Secure Distributed Systems! Laptop UC client WiFi UC System Firewall Internet Café Router Corp  HQ   Mobile Data Network Mobile UC client © Voxeo Corporation
  • 21. How Do You Securely Federate?! Internet Corporate Corporate Network Network UC UC UC UC System System System System Corp  HQ   Office  A   Corp  HQ   Office  A   Company  A   Company  B   © Voxeo Corporation
  • 22. What if the Cloud Isnʼt There?! Corporate Internet Network IVR Voicemail IM IM IM Presence Presence Presence Call Call Call Control Control Control Corp  HQ   Office  A   Office  B   PSTN © Voxeo Corporation
  • 23. Questions About the Cloud!   What kind of availability guarantees / Service Level Agreements (SLAs) does the platform vendor provide?   What kind of geographic redundancy is built into the underlying network?   What kind of network redundancy is built into the underlying network?   What kind of physical redundancy is built into the data centers?   What kind of monitoring does the vendor perform?   What kind of scalability is in the cloud computing platform?   What kind of security, both network and physical, is part of the computing platform?   Finally, what will the vendor do if there is downtime? Will the downtime be reflected in your bill? © Voxeo Corporation
  • 24. The Way It Used To Be! © Voxeo Corporation
  • 25. Today...! ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP PSTN ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP ITSP © Voxeo Corporation
  • 26. Resources!   VoIP Security Alliance •  www.voipsa.org •  www.voipsa.org/blog   Hacking Exposed: VoIP •  www.hackingvoip.com   Seven Deadliest Unified Communications Attacks •  www.7ducattacks.com © Voxeo Corporation