Robustness and Performance Evaluation of Firewall and VPN Services
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1 Robustness and Performance Evaluation of Firewall and VPN Services Bernd Klusmann Project Manager EANTC AG
2 Presentation Topics Introduction EANTC Need for Testing? How to Test? Test Equipment Test Experience / Results Oncoming Public Test Events Conclusion Slide 2
3 About EANTC EANTC, Berlin-Charlottenburg EANTC is a highly specialised provider of services in the field of network technologies. EANTC offers vendor independent network quality assurance. EANTC business areas are: Test and certification of network components for manufacturers. Test of high-speed enterprise / service provider networks and network design consultancy. Research and development of test methods and analysis tools. Vendor-neutral technology seminars (both ATM & MPLS). Slide 3
4 Need for Testing? Why Test Firewalls and VPN Gateways? Rapid rise in firewall and VPN deployment Users are unsure about the performance of available products Implementations vary widely, direct comparisons is difficult Edge transport speed increases Firewalls between internal networks request high performance Learn about effects on flow parameters like throughput and latency Slide 4
5 How to Test? Internet Engineering Task Force Benchmarking Work Group RFC 2647: Benchmarking Terminology for Firewall Performance Draft: Benchmarking Methodology for Firewall Performance Further topics: IP(Sec)-VPN technology testing Control plane and data plane tests Slide 5
6 How to Test: RFC 2647 Benchmarking Terminology for Firewall Performance Based on specs of router and switch benchmarking terminology RFC1242 and RFC2285 Forwarding rate and connection oriented measurements Definition of Terms Allowed traffic Connection Bit forwarding rate Goodput... Slide 6
7 How to Test: IETF Methodology Draft Independent of implementation From simple packet filtering......to complex combination of packet filtering, application level proxy and network translation services Test Setup Methodology Detailed Test Specifications Slide 7
8 How to Test: IETF Methodology Draft Test Setup Methodology Dual- and tri-homed, Test Traffic Requirements, NAT, Rule Sets, Caching protected unprotected unprotected protected DMZ DMZ = DeMilitarized Zone Slide 8
9 How to Test: IETF Methodology Draft Concurrent TCP Connection Capacity Maximum TCP Connection Setup Rate Connection Establ. and TeardownTime DoS (Denial of Service) Handling effect on connection establishment and/or forwarding rate HTTPbit forwarding rate (RFC2647) IP Fragmentation Illegal Traffic Handling Latency of network-layer or applicationlayer data TCP connection establishment via firewall Slide 9
10 How to Test: Further Topics First solutions appear for IP(Sec)-VPN Tests: tunnel creation capacity testing using IPSec protocols measuring data performance (UDP or HTTP traffic) characteristics over the created tunnels helping in troubleshooting interop issues Internet protected VPN Tunnel protected Slide 10
11 Test Experience / Results Public test series Firewall Appliances for NetworkWorld Germany Appliances with stateful inspection and VPN feature Target customers: enterprises with up to 500 clients Slide 11
12 Test Experience / Results Test Scenario IP Performance (throughput and latency) Two appliances built SUT/DUT Real world scenario: different packet sizes and different numbers of IP clients simulating a LAN LAN VPN Headquarter Munich Office Hamburg 3DES Encrypted No Encryption Protected Enterprise Network Protected Enterprise Network Slide 12
13 Test Experience / Results Test Scenario TCP Session Rate Test One appliance built DUT/SUT Varying number of virtual clients and rule sets unprotected protected Performance Analyser Slide 13
14 Test Experience / Results Individual test notes from 1 to 5 for each test Rating of test notes 20% for featurelist questionnaire 40% for performance values 40% for handling and ease of administration Lessons learned Comparison is difficult because of varying price/design factors among vendors Slide 14
15 Test Equipment EANTC conformance test suites (MPLS / IP / ATM) EANTC protocol emulator / performance test software (MPLS / ATM) Spirent: Smartbits IP performance analyzer Spirent: AX4000 ATM / PoS / IP protocol emulator and analyzer IXIA: 1600 IP performance analyzer NetTest: Interwatch ATM analyzer / protocol emulator Radcom: PrismLite ATM / Ethernet protocol analyzer Agilent:: HP75000 ATM test system Spirent:: Abacus bulk call generator / speech quality analyzer Shunra Storm: WAN Analyzer Slide 15
16 Oncoming Public Test Events In cooperation with the magazine network world Germany, EANTC regularly publishes test reports about network components: New test series on firewalls is planned Q3 this year Slide 16
17 Conclusion Tests reveal objective benchmarks about the performance of available products Benchmarking standards allow comparison of varying implementations Effects of logging, inspecting, deciding, encrypting, caching, NAT-ing, etc. can be observed in detail when testing Run tests to make sure your individual requirements are met! Slide 17
18 Thanks! Any Questions? Please visit our homepage to read more about quality assurance in high speed networks and related services! URL: or Slide 18
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