University of Murcia (Spain) Antonio F. Gómez Skarmeta University of Murcia SPAIN

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1 University of Murcia (Spain) Antonio F. Gómez Skarmeta University of Murcia SPAIN

2 Network Security in IPv6 IPv6 IPsec/IKE Implementations UMU-PKIv6 Policy-Based Network Management (PBNM) PBNM for IPv6 Network Security Components Implementation of some Elements of the UMU-PBNM Conclusions References

3 Network Security in IPv6 Introduction IPsec main features Public Key Infrastructures IPv6 IPsec/IKE Implementations UMU-PKIv6 Policy-Based Network Management (PBNM) PBNM for IPv6 Network Security Components Conclusions References

4 Network Security in IPv6: key aspect for current and new Internet services and applications No longer an add-on option: mandated and built in as part of IPv6 It is based on: IPsec Some additional components like Public Key Infrastructures DNSsec

5 Standardized: defined as extensions to the IP protocol suite AH and ESP headers Mandated: all implementations must offer it Integrated into the protocol: Protects all upper layer protocols Invisible to applications (they can use IPsec based on their needs) Protects both router-to-router and end-toend communications

6 Enables the management of public keys Why a PKI need to support IPv6 communications? To provide native access to PKI services through IPv6-only or dual-stack networks To enable and promote security-related services and applications, such as: Secure VPNs AAA Secure videoconferencing One of the first experiences on PKIs for IPv6: UMU-PKIv6

7 Network Security in IPv6 IPv6 IPsec/IKE Implementations IPsec/IKE Solutions Analyzed First Evaluation Conclusions UMU-PKIv6 Policy-Based Network Management (PBNM) PBNM for IPv6 Network Security Components Conclusions References

8 Open-Source Solutions FreeS/WAN 1.91 (K)/1.99 (U) with IPv6 support (Linux) USAGI Stable Release 4 (Linux) KAME-integrated in FreeBSD 4.6 (FreeBSD) Commercial Solutions Microsoft IPv6 (Windows XP) Solaris 9 6WIND 6200 Edge Device

9 Operation Mode FreeS/WAN USAGI KAME Windows Solaris 6WIND Transport support support support support support Tunnel support future support support support Compression Algorithms FreeS/WAN USAGI KAME Windows Solaris 6WIND Deflate future support LZS Authentication Algorithms FreeS/WAN USAGI KAME Windows Solaris 6WIND HMAC-MD5 support support support support support support HMAC-SHA-1 support support support support support support

10 Encryption Algorithms FreeS/WAN USAGI KAME Windows Solaris 6WIND DES-CBC support support support support Triple DES support support support support support Rijndael/AES support support support Cast128 support Twofish support Blowfish support support Configurations FreeS/WAN USAGI KAME Windows Solaris 6WIND Static keys support support support support support Preshared keys support support future future support Certificates support support support Secure DNS future

11 IPsec/IKE with IPv6 not equally deployed as with IPv4 (e.g. FreeS/WAN); in some cases independent (e.g. Windows XP or Solaris 9) KAME is the implementation with better IPsec/IKE support Commercial OS are having complete IPv6 IPsec implementations Normally, implementations manually configured It seems that implementations are getting mature enough

12 Network Security in IPv6 IPv6 IPsec/IKE Implementations UMU-PKIv6 Description Architecture Policy-Based Network Management (PBNM) PBNM for IPv6 Network Security Components Conclusions References

13 Main Objective... to establish a high security infrastructure for distributed systems Main Features: PKI supporting the IPv6 protocol Developed in Java running on every Operating System Issue, renew and revoke certificates for every entity belonging to one organisation Final users can use either RAs or Web browsers to make their own certification operations LDAPv6 directory support

14 Main Features: (II) Use of smart cards (file system, RSA or Java Cards)... allowing user mobility and increasing security PKI Certification Policy (CPS) support VPN devices certification support (using the SCEP and SSH/SCEP protocol) Support for the OCSP protocol and Time Stamp Web Administration Used in both Euro6IX and 6NET projects (crosscertification between UMU and UCL-CS)

15 LDAP Server End User VPN Device Administrator Certification Authority IPv6 Plain connection IPv6 SSL connection SCEP or SSH/SCP over IPv6 WWW Secure Request Server Data Base Registration Authority

16 TSP Message TimeStamping Responder msg hash time stamp OCSP Message Time Stamp Server TSPClient Certificate OCSPResponder cert serial number Certificate status OCSP Server OCSP Client Certification Authority

17 Network Security in IPv6 IPv6 IPsec/IKE Implementations UMU-PKIv6 Policy-Based Network Management (PBNM) Why do we need policies?? What is a policy?? Where can we apply them?? PBNM for IPv6 Network Security Components Implementation of some Elements of the UMU- PBNM Conclusions References

18 Current state of the art in IP networks: Devices on networks: more Numerous Complicated to configure Enterprises and services providers New services: QoS, VPNs, mobility, etc. New applications: videoconference, streaming, etc. Current IP networks: complex connection of resources difficult (if not impossible) to manage

19 Policies Offer a system-wide view of The network The services The applications Shift the emphasis of network management to users, services, and applications Abstract the details of Device configuration Services and applications behaviour

20 Set of rules that determine the behaviour of the network, services and applications IF certain conditions are present, THEN specific actions are taken Example: If ((traffictoorfrom NetworkA) and (dayofmonth is last10days)) then securitylevel = high

21 It can be applied to: Non-networking-related fields (e.g. operating systems) Networking (IP-based or not) Some application areas within IP networking: QoS control VPNs Videoconferencing Voice over IP VoD Service SLA validation AAA IP routing Etc.

22 Network Security in IPv6 IPv6 IPsec/IKE Implementations UMU-PKIv6 Policy-Based Network Management (PBNM) PBNM for IPv6 Network Security Components Policies for the UMU-PKIv6 Policies for IPsec UMU-PBNM applied to VPNs UMU-PBNM Components Conclusions References

23 Drive the way the UMU-PKIv6 itself works Digital implementation of a Certification Practice Statement (CPS)... they specify which rules must be applied to requested or existing certificates Centralised creation process driven by the admin Distributed use by RAs and other PKI components Categories: Certification rules Re-issuance rules Revocation rules

24 Verified by all the PKI entities Digitally signed (integrity and authentication) normally by the CA private key Serial Number Issue Date Next Issue

25 General definition... IF conditions include a type of traffic, IP address, and/or TCP/UDP port, THEN actions should include setting certain level of authentication and encryption of traffic Common mean of specifying IPsec policies Vendor and platform independent Defined in XML and mapping, using XML style-sheets, onto every IPsec and IKE (freeware or commercial) implementations Enables a coordinated control of IP-level security services in every administrative domain A policy system working with IPv6 security: UMU-PBNM

26 XML/XML Signature XML/XML Signature XML/XML Signature VPN: IPv6 Security Policy Management Tool (PMT) LDAP Policy Repository LDAP Policy Decision Point (PDP) COPS: UMU-PBNM Standards in Use PEP: UMU-PBNM Components Monitoring Information HTTPS COPS COPS-PR COPS COPS-PR COPS COPS-PR Policy Console VPN VPN CIM/PCIM Administrator Policy Enforcement Point (PEP): IPsec Node PEP: IPsec Node PEP: IPsec Node

27 PWR OK WIC0 ACT/CH0 ACT/CH1 PWR OK WIC0 ACT/CH0 ACT/CH1 WIC0 ACT/CH0 ACT/CH1 ETH ACT COL WIC0 ACT/CH0 ACT/CH1 ETH ACT COL Euro6IX Backbone PARIS UMU 6WIND Router 1 Client VPN EPoint Administrator PKIv6 6WIND Router 2 Client VPN Enforcement Export Request Certificate / Import Certificate PKI Interaction (get Admin Certificate) / VPN EPoint Interaction Tunnel ESP Currently, it is also being deployed for CISCO routers

28 Network Security in IPv6 IPv6 IPsec/IKE Implementations UMU-PKIv6 Policy-Based Network Management (PBNM) PBNM for IPv6 Network Security Components Conclusions References

29 Network Security in IPv6 is a key point for current and new services and applications IPsec is the base component, though some additional ones are needed, e.g. PKI State of the art: IPv6 IPsec implementations are getting enough mature Just few experiences on PKI over IPv6 New scenarios need to be defined and tested Much work still to be done (technically, legally, dissemination, )

30 Policies new paradigm: Providing a holistic view of the network, allowing (Current) network managers network engineers (near future) To forget about individual device configuration To see how the network is performing at a high-level from the service and application perspective rather than just throughput To concentrate on how the network is meeting business needs Easier, faster, and more scalable deployment of new services and applications (e.g. end-to-end) Adding more intelligence to the network, service and application provision and management Addressing important issues for the deployment of the Next Generation Internet

31 Network Security in IPv6 IPv6 IPsec/IKE Implementations UMU-PKIv6 Policy-Based Network Management (PBNM) PBNM for IPv6 Network Security Components Conclusions References

32 Euro6IX Project Euro6IX Deliverable D4.1a deliverables.htm UMU-PKIv6 UMU-PBNM

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