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Hardened Network

Hardened Network. Implementation & Simulation. Contents. HBGP Implementation of HBGP Simulation on SSFnet Simulation Results Future Work. HBGP. A Protocol used to propagate Hardened Network information An extension to BGP4 Hardened AS Path

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Hardened Network

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  1. Hardened Network Implementation & Simulation

  2. Contents • HBGP • Implementation of HBGP • Simulation on SSFnet • Simulation Results • Future Work

  3. HBGP • A Protocol used to propagate Hardened Network information • An extension to BGP4 • Hardened AS Path • Keep the last and next Hardened Network information in the routing table

  4. Implementation of HBGP • GateD • Open-source routing protocol development platform • Model the operations of a human-configurable routers

  5. Implementation of HBGP • Modifications to GateD • aspath_format • aspath_attr • BGP_send_update • BGP_receive_update • rt_add • rt_change • if_rtup • bgp_syn_rt_change

  6. Implementation of HBGP • Status: • Hardened Network information has been propagated correctly • Modification to Routing table has been finished and under testing and debugging

  7. Simulation on SSFnet • SSFnet • Open-source Java/C++ Internet model and simulation • Protocols: IP, TCP, UDP, BGP4, OSPF, and others • network elements: hosts, routers, links, LANs

  8. Simulation on SSFnet • Modification on SSFnet • BGP package • Constructing Hardened AS Path information • Parsing Hardened AS Path information • Routing table package • Inserting last and next Hardened ASes information • IP package • Retrieving last Hardened AS • Encrypting/decrypting • Gathering information

  9. Simulation on SSFnet • Controller • Analysis information • Setting up the normal pattern • Detecting attack • Responding to abnormal behavior • Restoring the traffic

  10. Simulation Configuration

  11. Normal Transp. Time(S.) Hardened Transp. Time(S.) Overhead (S.) Normal Transp. Time(S.) Hardened Transp. Time(S.) Overhead (S.) 2 routers 0.0005588 0.0006020 0.0000432 3 routers 0.0006648 0.0007016 0.0000368 3 routers 0.0006250 0.0006712 0.0000462 4 routers 0.0009778 0.0010189 0.0000411 4 routers 0.0009753 0.0010271 0.0000518 5 routers 0.0013423 0.0014050 0.0000627 5 routers 0.0012139 0.0012572 0.0000433 6 routers 0.0017927 0.0018165 0.0000238 6 routers 0.0017969 0.0018450 0.0000481 7 routers 0.0019900 0.0020223 0.0000323 7 routers 0.0021466 0.0022015 0.0000549 8 routers 0.0022800 0.0023054 0.0000254 8 routers 0.0023938 0.0024490 0.0000522 9 routers 0.0027856 0.0028272 0.0000416 9 routers 0.0028109 0.0028760 0.0000651 10 routers 0.0033593 0.0033843 0.0000250 10 routers 0.0033593 0.0034044 0.0000451 Simulated Performance (RC4) TABLE 1. HARDEN-BACKBONE-ROUTER (RC4) TABLE 4. HARDEN-END-ROUTER (RC4)

  12. Normal Transp. Time(S.) Normal Transp. Time(S.) Hardened Transp. Time (S.) Overhead (S.) Hardened Transp. Time(S.) Overhead (S.) 3 routers 0.0006648 0.0007900 0.0001252 2 routers 0.0005588 0.0006765 0.0001177 4 routers 0.0009778 0.0011291 0.0001513 3 routers 0.0006250 0.0007553 0.0001303 5 routers 0.0013423 0.0015043 0.0001620 4 routers 0.0009753 0.0010993 0.0001240 6 routers 0.0017927 0.0019201 0.0001274 5 routers 0.0012139 0.0013801 0.0001662 7 routers 0.0019900 0.0021080 0.0001180 6 routers 0.0017969 0.0019350 0.0001381 8 routers 0.0022800 0.0023673 0.0000873 7 routers 0.0021466 0.0022806 0.0001340 9 routers 0.0027856 0.0028893 0.0001037 8 routers 0.0023938 0.0025461 0.0001525 10 routers 0.0033593 0.0034358 0.0000795 9 routers 0.0028109 0.0029600 0.0001491 10 routers 0.0033593 0.0035168 0.0001575 Simulated Performance (BLOWFISH) TABLE 2. HARDEN-BACKBONE-ROUTER (BLOWFISH) TABLE 5. HARDEN-END-ROUTER (BLOWFISH)

  13. Normal Transp. Time(S.) Normal Transp. Time(S.) Hardened Transp. Time S.) Overhead (S.) Hardened Transp. Time(S.) Overhead (S.) 3 routers 0.0006648 0.0010609 0.0003957 2 routers 0.0005588 0.0009751 0.0004163 4 routers 0.0009778 0.0013318 0.0003540 3 routers 0.0006250 0.0010139 0.0003889 5 routers 0.0013423 0.0017127 0.0003704 4 routers 0.0009753 0.0012781 0.0003082 6 routers 0.0017927 0.0020970 0.0003043 5 routers 0.0012139 0.0015882 0.0003743 7 routers 0.0019900 0.0023300 0.0003400 6 routers 0.0017969 0.0021268 0.0003299 8 routers 0.0022800 0.0026304 0.0003504 7 routers 0.0021466 0.0024905 0.0003439 9 routers 0.0027856 0.0031015 0.0003159 8 routers 0.0023938 0.0027543 0.0003605 10 routers 0.0033593 0.0035963 0.0002370 9 routers 0.0028109 0.0031698 0.0003589 10 routers 0.0033593 0.0037286 0.0003693 Simulated Performance (DES) TABLE 3. HARDEN-BACKBONE-ROUTER (DES) TABLE 6. HARDEN-END-ROUTER (DES)

  14. Comparison of Performance Figure 7. Overhead Comparison of 8-router packets Figure 8. Overhead Comparison of 10-router packets

  15. Simulated Detection & Response • Hardened all the end routers • ICMP attack targeting the host in AS12 • Attackers are distributed over the three subnets

  16. Simulated Detection & Response Fig. 6 Traffic Pattern at Router at AS12

  17. Simulated Detection & Response • Hardened the core routers • ICMP attack targeting the host at AS12 • Attacker also are distributed over the three subnets

  18. Simulated Detection & Response Fig. 7 Traffic Pattern at Router 1 of AS1

  19. Future Work • Implementation • Hardened AS Controller • Key exchange • Encryption/Decryption in IP forwarding

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