lectures notes for 2013

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ARP Refinements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 ARP Timeouts................................................................................................................................ 23 ARP example 2 .............................................................................................................................. 24 Proxy ARP (RFC 826)................................................................................................................... 25 Gratuitous ARP.............................................................................................................................. 26 Additional ARP commands ........................................................................................................... 27 ARP - as seen with ethereal ........................................................................................................... 28 non ARP example 1 ....................................................................................................................... 29 RARP: Reverse Address Resolution Protocol (RFC 903)............................................................. 30 RARP - as seen with ethereal......................................................................................................... 31 RARP server .................................................................................................................................. 32 Alternatives to RARP .................................................................................................................... 33 Novel IPX/SPX Addresses ............................................................................................................ 34 Useful tools .................................................................................................................................... 35 tcpdump.......................................................................................................................................... 36 tcpdump - Linux............................................................................................................................. 37 Tools Used: tcpdump Program ...................................................................................................... 38 Wireshark (<strong>for</strong>merly Ethereal)....................................................................................................... 39 Linux Socket filter ......................................................................................................................... 41 Tools Used: sock Program............................................................................................................. 42 Tools Used: sock + tcpdump ......................................................................................................... 43 Generating packets......................................................................................................................... 44 Maguire vii of xlii maguire@kth.se 2012.02.28 Internetworking/Internetteknik
Wireshark’s IO Graph functionality .............................................................................................. 46 Some statistics on this packet trace................................................................................................ 47 Interarrival delay and variance....................................................................................................... 48 Traffic generators........................................................................................................................... 49 Summary........................................................................................................................................ 50 References...................................................................................................................................... 51 Maguire viii of xlii maguire@kth.se 2012.02.28 Internetworking/Internetteknik
Page 1 and 2: IK1550 & IK1552 Internetworking/Int
Page 3 and 4: Internetworking....................
Page 5 and 6: Virtual Interface (VIF)............
Page 7: Module 2: IP Basics: Routing, ARP,
Page 11 and 12: ICMP Redirect .....................
Page 13 and 14: Building a UDP packet from scratch
Page 15 and 16: Module 5: TCP, HTTP, RPC, NFS, X...
Page 17 and 18: Problems with multiple connections.
Page 19 and 20: Module 6: SCTP ....................
Page 21 and 22: Module 7: Dynamic Routing .........
Page 23 and 24: BGP Open Message ..................
Page 25 and 26: IGMP Implementation Details........
Page 27 and 28: Capacity Assignment ...............
Page 29 and 30: Network Management Systems ........
Page 31 and 32: Module 10: IPv6 ...................
Page 33 and 34: Why IPv6? .........................
Page 35 and 36: Wireless WANs . . . . . . . . . . .
Page 37 and 38: Module 12: IPSec, VPNs, Firewalls,
Page 39 and 40: Module 13: Future and Summary......
Page 41 and 42: Peer to peer networking ...........
Page 43 and 44: Module 14: Some exercises..........
Page 45 and 46: Welcome to the Internetworking cour
Page 47 and 48: Goals, Scope and Method Goals of th
Page 49 and 50: Learning Outcomes Following this co
Page 51 and 52: Prerequisites • Datorkommunikatio
Page 53 and 54: Topics • What an internet is and
Page 55 and 56: Grades: A..F (ECTS grades) • To g
Page 57 and 58: Written Assignment Goal: to gain an
Page 59 and 60:
Literature The course will mainly b
Page 61 and 62:
Schedule for Period 4 2013: Lecture
Page 63 and 64:
Context of the course “The networ
Page 65 and 66:
Running out of IPv4 addresses IPv4
Page 67 and 68:
How can we deal with all of these d
Page 69 and 70:
Basic concepts open-architecture ne
Page 71 and 72:
Internetworked Architecture H … M
Page 73 and 74:
Trends: Shifting from traditional t
Page 75 and 76:
IP traffic growing exponentially! T
Page 77 and 78:
Growth rates Some people think the
Page 79 and 80:
Increasing Data Rates “Ethernet
Page 81 and 82:
The Internet Today Local … Local
Page 83 and 84:
Implicit vs. Explicit Information V
Page 85 and 86:
Encapsulation Appl header user data
Page 87 and 88:
• Transport layer • Port number
Page 89 and 90:
IP “Protocol” field (RFC 1700)
Page 91 and 92:
Decimal Keyword Protocol References
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Basic communication mechanism: data
Page 99 and 100:
Common Used Simple Services Name TC
Page 101 and 102:
Simple Campus Network WAN ISP’s r
Page 103 and 104:
How important are switches vs. rout
Page 105 and 106:
LAN Protocols Data link Layer LLC S
Page 107 and 108:
IEEE 802.2/802.3 Encapsulation (RFC
Page 109 and 110:
SLIP (RFC 1055) IP datagram c0 1 db
Page 111 and 112:
Robust Header Compression (rohc) He
Page 113 and 114:
PPP frames FLAG ADDR CNTL 7E FF pro
Page 115 and 116:
Loopback interface IP output functi
Page 117 and 118:
Virtual Interface (VIF) IP output f
Page 119 and 120:
Wireshark, tcpdump, etc. Wireshark
Page 121 and 122:
Figure 18: After capturing some pac
Page 123 and 124:
Example: Comma Separated Values "No
Page 125 and 126:
Figure 20: Second step in conversio
Page 127 and 128:
Example of what can be done Figure
Page 129 and 130:
print PTMP "$time $RSSId\n"; $count
Page 131 and 132:
From an eariler version of the prog
Page 133 and 134:
Address types • Unicast = one-to-
Page 135 and 136:
Classless addressing: Subnetting IP
Page 137 and 138:
Subnet mask 32 bit value with a 1 f
Page 139 and 140:
Slash notation continued Length (CI
Page 141 and 142:
Private addresses Private addresses
Page 143 and 144:
ifconfig, route, and netstat Comman
Page 145 and 146:
Summary • Course Introduction •
Page 147 and 148:
References [1] Barry M. Leiner, Vin
Page 149 and 150:
IK1550 & IK1552 Internetworking/Int
Page 151 and 152:
Connection-oriented vs Connectionle
Page 153 and 154:
Direct vs. indirect Delivery • Di
Page 155 and 156:
Processing Rouing daemon route comm
Page 157 and 158:
Routing Table Search - Classless
Page 159 and 160:
Routing Tables • Aggregate IP add
Page 161 and 162:
Host vs. router - two behaviors •
Page 163 and 164:
Routing Control Plane Routing Table
Page 165 and 166:
ARP and RARP Address resolution (lo
Page 167 and 168:
Address Resolution: ARP, RARP Host
Page 169 and 170:
ARP example 1 hostname ftp://B.kth.
Page 171 and 172:
ARP Timeouts • If there is no rep
Page 173 and 174:
Proxy ARP (RFC 826) Lets a router o
Page 175 and 176:
Additional ARP commands • publish
Page 177 and 178:
non ARP example 1 B packet demultip
Page 179 and 180:
RARP - as seen with ethereal Time S
Page 181 and 182:
Alternatives to RARP In a later lec
Page 183 and 184:
For looking at and generating packe
Page 185 and 186:
nucmed30:/home/maguire # /usr/sbin/
Page 187 and 188:
Wireshark (formerly Ethereal) First
Page 189 and 190:
Linux Socket filter If you want to
Page 191 and 192:
Tools Used: sock + tcpdump tcpdump
Page 193 and 194:
} if (inet_aton(destination_host, (
Page 195 and 196:
Some statistics on this packet trac
Page 197 and 198:
Traffic generators • Distributed
Page 199 and 200:
References [1] Renesas Technology C
Page 201 and 202:
Page 203 and 204:
Internet Protocol version 4 (IPv4)
Page 205 and 206:
MTU≡Maximum Transmission Unit MTU
Page 207 and 208:
Fields relevant to Fragmentation
Page 209 and 210:
Serial line throughput At 9,000 bit
Page 211 and 212:
Application Recommended Value for T
Page 213 and 214:
Problems with precedence • As soo
Page 215 and 216:
Differentiated services If bits 3,
Page 217 and 218:
Header Checksum • Ensures integri
Page 219 and 220:
IP Options Encoding Two styles: •
Page 221 and 222:
Internet Control Message Protocol (
Page 223 and 224:
ICMP Redirect ICMP Redirect message
Page 225 and 226:
PING examples On a Solaris machine:
Page 227 and 228:
Ping with record route option $ pin
Page 229 and 230:
ICMP Summary • Destination (Netwo
Page 231 and 232:
References [1] K. Ramakrishnan, S.
Page 233 and 234:
• UDP • Socket API • BOOTP
Page 235 and 236:
Main Transport layer protocols Thre
Page 237 and 238:
8 byte header + possible data UDP H
Page 239 and 240:
Reserved and Available UDP Port Num
Page 241 and 242:
MTU and Datagram Fragmentation If d
Page 243 and 244:
Interaction between UDP and ARP Wit
Page 245 and 246:
Still a problem? A UDP with 8192 pa
Page 247 and 248:
Maximum UDP Datagram size • theor
Page 249 and 250:
Socket API • int socket(int domai
Page 251 and 252:
#include #include #include #incl
Page 253 and 254:
#include #include #include #incl
Page 255 and 256:
Building a UDP packet from scratch
Page 257 and 258:
packetsize+=ip->ihlcheck=0; /* igno
Page 259 and 260:
• the router gets all 100 packets
Page 261 and 262:
BOOTP: Bootstrap Protocol (RFC 951)
Page 263 and 264:
Vendor specific information (RFC 14
Page 265 and 266:
• DHCP Message Type - the type of
Page 267 and 268:
other identification information ab
Page 269 and 270:
DHCP performance problems Most impl
Page 271 and 272:
DHCP and DNS • There is no dynami
Page 273 and 274:
IP header UDP header 20 bytes 8 byt
Page 275 and 276:
DNS: Domain Name Service (RFC 1034,
Page 277 and 278:
DNS Message format 0 16 31 Identifi
Page 279 and 280:
New top level domains There is a pr
Page 281 and 282:
Country Code Top-Level Domains (CCT
Page 283 and 284:
See Stevens, Vol. 1, figure 14.2, p
Page 285 and 286:
kth.se kth.se kth.se Authoritative
Page 287 and 288:
Another examine in MX RR format: MX
Page 289 and 290:
Storing other attributes - TXT reco
Page 291 and 292:
Root servers ROOT-SERVERS.NET IP ad
Page 293 and 294:
F root nameserver nodes Site Code L
Page 295 and 296:
Where is i.root-servers.net ? trace
Page 297 and 298:
DDNS RFC 2136: Dynamic Updates in t
Page 299 and 300:
DNS performance From www.dnsserverl
Page 301 and 302:
Web performance Using Page Speed (h
Page 303 and 304:
Public/Commercial DNS services A nu
Page 305 and 306:
References [1] Joe Abley, f.root-se
Page 307 and 308:
Lecture 4: Outline • TCP • HTTP
Page 309 and 310:
Transmission Control Protocol (TCP)
Page 311 and 312:
TCP Header 0 7 8 15 16 23 24 31 16
Page 313 and 314:
Control field - indicates the purpo
Page 315 and 316:
SYN Flooding Attack It is clear tha
Page 317 and 318:
TCP options These options are used
Page 319 and 320:
Sliding window Flow control • rec
Page 321 and 322:
keystroke Flow for an rlogin sessio
Page 323 and 324:
Nagle Algorithm telnet/rlogin/... g
Page 325 and 326:
Delayed acknowledgements Rather tha
Page 327 and 328:
Bandwidth-Delay Product How large s
Page 329 and 330:
Congestion Control We introduce a C
Page 331 and 332:
• cwnd starts at number of bytes
Page 333 and 334:
Karn’s algorithm When a retransmi
Page 335 and 336:
Van Jacobson’s Fast retransmit an
Page 337 and 338:
TCP Persist Timer If the window siz
Page 339 and 340:
TCP Performance TCP’s path MTU di
Page 341 and 342:
Measuring TCP Performance Measured
Page 343 and 344:
TCP servers Stevens, Vol. 1, pp. 25
Page 345 and 346:
2 message types: • request HTTP P
Page 347 and 348:
HTTP Header names (See Stevens, fig
Page 349 and 350:
Client Caching Client can cache HTT
Page 351 and 352:
Multiple simultaneous connections t
Page 353 and 354:
Problems with multiple connections
Page 355 and 356:
What happens when you make an HTTP
Page 357 and 358:
HTTP performance Joe Touch, John He
Page 359 and 360:
Network File System (NFS) NFS is ba
Page 361 and 362:
• program number, program version
Page 363 and 364:
Port Mapper RPC server programs use
Page 365 and 366:
NFSspy problem Imagine several stud
Page 367 and 368:
NFS protocol, version 2 (RFC 1094)
Page 369 and 370:
NFS File Handles To reference a fil
Page 371 and 372:
NFS Procedures Procedure NFSPROC_GE
Page 373 and 374:
NFS Statelessness NFS is designed t
Page 375 and 376:
• All clients (even those on diff
Page 377 and 378:
Xscope Interpose a process between
Page 379 and 380:
Program tcptrace xplot testrig aspa
Page 381 and 382:
Summary This lecture we have discus
Page 383 and 384:
Page 385 and 386:
Stream Control Transmission Protoco
Page 387 and 388:
SCTP Header 0 7 8 15 16 23 24 31 16
Page 389 and 390:
Association establishment - 4-way h
Page 391 and 392:
• Transmission sequence number (T
Page 393 and 394:
State Cookie Use of the COOKIE prev
Page 395 and 396:
COOKIE ACK Chunk 0 7 8 15 16 23 24
Page 397 and 398:
Multiple-Streams Sending Process Re
Page 399 and 400:
ERROR chunk Sent when an endpoint f
Page 401 and 402:
Association Shutdown Active close t
Page 403 and 404:
SCTP Example - Daytime [6] server#
Page 405 and 406:
ethereal capture - daytime - INIT-A
Page 407 and 408:
ethereal capture - daytime - COOKIE
Page 409 and 410:
ethereal capture - daytime - SACK F
Page 411 and 412:
ethereal capture - daytime - SHUTDO
Page 413 and 414:
Fault Management • Endpoint Failu
Page 415 and 416:
Heartbeat and ACK Frame x … Sourc
Page 417 and 418:
Path MTU Discovery • IPv4 • Bas
Page 419 and 420:
SCTP header continued • Reliabili
Page 421 and 422:
• Receiver can use the Stream i a
Page 423 and 424:
Transport Protocol Functional Overv
Page 425 and 426:
References [1] G. Sidebottom, K. Mo
Page 427 and 428:
Page 429 and 430:
Routing Control Plane Routing Table
Page 431 and 432:
Basic Router Software Architecture
Page 433 and 434:
Routing packets in the Internet Rou
Page 435 and 436:
Routing Metrics A measure of which
Page 437 and 438:
Intradomain routing protocols also
Page 439 and 440:
RIP v1 operation As carried out by
Page 441 and 442:
Problems with RIP v1 • RIPv1 does
Page 443 and 444:
Split Horizon To counter the count
Page 445 and 446:
RIP extensions (aka RIP-2) Defined
Page 447 and 448:
Interior Gateway Routing Protocol (
Page 449 and 450:
IGRP Route Poisoning IGRP poisons r
Page 451 and 452:
Enhanced IGRP (EGRP) [6] Uses the d
Page 453 and 454:
OSPF uses the Shortest Path First a
Page 455 and 456:
Common header The 5 types of OSPF p
Page 457 and 458:
Database Description packet 0 7 8 1
Page 459 and 460:
• Length of the whole packet in b
Page 461 and 462:
Link state request packet 0 7 8 15
Page 463 and 464:
Interdomain routing protocols also
Page 465 and 466:
BGP - Border Gateway Protocol An ex
Page 467 and 468:
BGP operation BGP routers exchange
Page 469 and 470:
Classless Inter-Domain Routing (CID
Page 471 and 472:
Resulting BGP Architecture AS1 AS2
Page 473 and 474:
BGP Open Message 0 7 8 15 16 23 24
Page 475 and 476:
BGP Keepalive Message 0 7 8 15 16 2
Page 477 and 478:
Interconnections of networks Since
Page 479 and 480:
Commercial Internet eXchange (CIX)
Page 481 and 482:
Some of Sweden’s Internet exchang
Page 483 and 484:
NAPs today Using GigE, switch fabri
Page 485 and 486:
Internet Routing Registry (IRR) •
Page 487 and 488:
Cisco’s NetFlow Switching Routing
Page 489 and 490:
Cisco’s Tag Switching Combine rou
Page 491 and 492:
Tag Locations • in the Layer 2 he
Page 493 and 494:
Routers do more than routing Routin
Page 495 and 496:
References [1] J. Hawkinson and T.
Page 497 and 498:
Page 499 and 500:
Multicast and IGMP Maguire Multicas
Page 501 and 502:
Filtering up the protocol stack UDP
Page 503 and 504:
Other approaches to One-to-Many and
Page 505 and 506:
Multicast Backbone (MBONE) Expandin
Page 507 and 508:
Core Problem How to do efficient mu
Page 509 and 510:
IP WAN Multicast Requirements • C
Page 511 and 512:
Internet Multicast Addresses http:/
Page 513 and 514:
Mapping Multicast (Class D) address
Page 515 and 516:
IGMP: Internet Group Management Pro
Page 517 and 518:
Joining a Multicast Group • a pro
Page 519 and 520:
Group membership State Transitions
Page 521 and 522:
IGMP Version 3 [4] • Joining a mu
Page 523 and 524:
Frame 1: IGMP Membership Query Ethe
Page 525 and 526:
Frame 12: IGMP v1 Membership Report
Page 527 and 528:
Multicast routing AS1 AS2 AS3 AS4 A
Page 529 and 530:
Multicasting Example: Transmitting
Page 531 and 532:
Delivery Trees: different methods
Page 533 and 534:
Link-State Multicast: MOSPF [5] Jus
Page 535 and 536:
• RPF results in a different span
Page 537 and 538:
RPB + Prunes ⇒ Reverse Path Multi
Page 539 and 540:
Multicast Routing - Steiner Tree’
Page 541 and 542:
Protocol-Independent Multicast (PIM
Page 543 and 544:
Multicast backbone (MBONE) [2] Why
Page 545 and 546:
Benefits for Conferencing • IP Mu
Page 547 and 548:
MBONE growth 1600 1400 1200 Nodes 1
Page 549 and 550:
MBONE connections MBONE is an “ov
Page 551 and 552:
Multicast Source Discovery Protocol
Page 553 and 554:
Single Source Multicast (SSM) [15]
Page 555 and 556:
Tools for managing multicast “Man
Page 557 and 558:
Protocol-Specific Multicast Routing
Page 559 and 560:
QoS & Scheduling algorithms Predict
Page 561 and 562:
Functionality • RSVP is receiver
Page 563 and 564:
Jitter Control • if network has e
Page 565 and 566:
RSVP Protocol Mechanism • Sender
Page 567 and 568:
RSVP operation S 1 R 1 R 2 S 2 Figu
Page 569 and 570:
RSVP Summary • RSVP supports mult
Page 571 and 572:
Further reading IETF Routing Area,
Page 573 and 574:
References [1] Joe Abley, f.root-se
Page 575 and 576:
Page 577 and 578:
ISO FCAPS Network Management Model
Page 579 and 580:
Network Management Process Simple N
Page 581 and 582:
SNMPv3 March 1997, the SNMPv3 Worki
Page 583 and 584:
Management Information Base: MIB MI
Page 585 and 586:
SNMP Traps Agent sends a trap to ma
Page 587 and 588:
RMON Probes or Monitors Network mon
Page 589 and 590:
Ethernet Statistics Group “These
Page 591 and 592:
EtherHistoryEntry::= SEQUENCE { eth
Page 593 and 594:
Host Top N group Used to prepare re
Page 595 and 596:
RMON2 Information collected from ne
Page 597 and 598:
Proprietary MIBs to extend RMON fun
Page 599 and 600:
WEB based Management Using the Web
Page 601 and 602:
Web Based Enterprise Management Ini
Page 603 and 604:
Four Elements of DMI • a format f
Page 605 and 606:
Java and Management Java Management
Page 607 and 608:
Policy Based Management See the rec
Page 609 and 610:
Voice over IP (VoIP) First we will
Page 611 and 612:
Deregulation continued ⇒ New oper
Page 613 and 614:
Increasingly IP based data+voice in
Page 615 and 616:
Voice over IP (VOIP) Gateways not o
Page 617 and 618:
VOIP Modes of Operation • PC to P
Page 619 and 620:
Cisco 3800 supports even more CODEC
Page 621 and 622:
Intranet Telephone System On Januar
Page 623 and 624:
http://www.homerun.telia.com/ Telia
Page 625 and 626:
VOIP vs. traditional telephony In
Page 627 and 628:
VON (Voice on the Net) Conferences
Page 629 and 630:
on the path. The one signal is read
Page 631 and 632:
VoIP details Carry the speech frame
Page 633 and 634:
RTP and H.323 for IP Telephony audi
Page 635 and 636:
Alice invites Bob to a SIP session:
Page 637 and 638:
Bob’s response 1 SIP/2.0 200 OK V
Page 639 and 640:
SIP Status codes SIP status codes a
Page 641 and 642:
Further Reading IP Telephony (iptel
Page 643 and 644:
Twitter Twitter is a service based
Page 645 and 646:
References [1] Paul McFedries, twit
Page 647 and 648:
• IPv6 Lecture 6: Outline Maguire
Page 649 and 650:
Growth • Currently IPv4 serves a
Page 651 and 652:
Networked Entertainment Your TV wil
Page 653 and 654:
IPv6 features • Expanded Addressi
Page 655 and 656:
Demultiplexing Initially, it was as
Page 657 and 658:
Quality-of-Service Capabilities •
Page 659 and 660:
IPv4 Protocol type ⇒ IPv6 Next He
Page 661 and 662:
Addressing • 128 bits long • th
Page 663 and 664:
Address Allocation [17] and [22] Bi
Page 665 and 666:
For an analysis of use from the poi
Page 667 and 668:
Special Address Formats Unspecified
Page 669 and 670:
Multicast Addresses 4 bit 4 bit 111
Page 671 and 672:
FF02:0:0:0:0:0:3 FF02:0:0:0:0:1:1 F
Page 673 and 674:
Anycast Sending a packet to a gener
Page 675 and 676:
Routing header Next Header (8 bits)
Page 677 and 678:
Destination Options header Next Hea
Page 679 and 680:
Hop-by-Hop Options header Same basi
Page 681 and 682:
IPSEC IPv6 implementation The US Na
Page 683 and 684:
Type: 1, 2, 3, or 4: IPv6 ICMP Erro
Page 685 and 686:
IPv6 ICMP and groups Three group me
Page 687 and 688:
DNS and IPv6 A new record type “A
Page 689 and 690:
Why IPv6? • solves Internet scali
Page 691 and 692:
RIR assignments of IPv6 addresses T
Page 693 and 694:
Migration to IPv6 A set of prioriti
Page 695 and 696:
Further information See: http://www
Page 697 and 698:
References [1] S. Deering and R. Hi
Page 699 and 700:
[26] J. Rajahalme, A. Conta, B. Car
Page 701 and 702:
• Mobile IP Outline Maguire Outli
Page 703 and 704:
Mobility γ Z C X A1 Y B α γ Z C
Page 705 and 706:
Objectives of Mobile IP • To prov
Page 707 and 708:
How can Z continue to communication
Page 709 and 710:
Establishing Identity When a node a
Page 711 and 712:
Could the MSR functionality be coll
Page 713 and 714:
Back to the original problem: Z wan
Page 715 and 716:
Alternative 2 Initially X is locate
Page 717 and 718:
Alternative 4 Initially X is locate
Page 719 and 720:
How does Z know to send things to M
Page 721 and 722:
Wireless Local Area Networks cell a
Page 723 and 724:
Simulcasting in Wireless Local Area
Page 725 and 726:
A Mobile-IP(V4) Scenario IP in IP t
Page 727 and 728:
IP-in-IP Encapsulation In-in-IP vs.
Page 729 and 730:
Temporary Address Assignment Two ty
Page 731 and 732:
Agent Advertisement Message Format
Page 733 and 734:
MN Requirements An MN must have:
Page 735 and 736:
HA Requirements Each HA must have:
Page 737 and 738:
Problems of Mobile IP (RFC2002) •
Page 739 and 740:
CDMA2000 Extension to Mobile IP A d
Page 741 and 742:
HAWAII extension is similar to Cell
Page 743 and 744:
Cellular IP (CIP): Location Update
Page 745 and 746:
Hierarchical FA and Regional Tunnel
Page 747 and 748:
Why not simply use Dynamic DNS (DDN
Page 749 and 750:
References [1] . B. Aboba and M. Be
Page 751 and 752:
• IPSec, VPN, … • Firewalls &
Page 753 and 754:
Virtual Private networks (VPNs) lea
Page 755 and 756:
GSS-API Generic Security Services A
Page 757 and 758:
ESP packet Consists of: • a contr
Page 759 and 760:
ISAKMP ISAKMP is based on the Diffi
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Firewalls exterior interior (often
Page 763 and 764:
Firewall Design apply basics of sec
Page 765 and 766:
SOCKs Permeo Technologies, Inc.’s
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MBONE through firewalls http://www.
Page 769 and 770:
U.S. DOE CIAC’s Network Security
Page 771 and 772:
The Network Mapper (NMAP) Network M
Page 773 and 774:
Demilitarized zone (DMZ) Internet e
Page 775 and 776:
Security Organizations and Companie
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[1] IETF Security Area http://sec.i
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Prentice-Hall, 2001, ISBN 0-13-0861
Page 781 and 782:
Outline • Third generation of net
Page 783 and 784:
Third generation of networking Van
Page 785 and 786:
From PANs to RANs and beyond The co
Page 787 and 788:
Delay Tolerant Networks (DTNs) Trad
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Growth rates n = number of users Sa
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Growth in Internet hosts 6e+08 ✧
Page 793 and 794:
Long tail Frequency Items Figure 3:
Page 795 and 796:
Free Chris Anderson’s Free: The F
Page 797 and 798:
Working for free Once you have food
Page 799 and 800:
Quality of Service (QoS) QoS refers
Page 801 and 802:
Constraint-based Routing QoS routin
Page 803 and 804:
Routers: Performance 1/2 to 1 Milli
Page 805 and 806:
From the X2T11 standards activity F
Page 807 and 808:
• Internet Fibre Channel Protocol
Page 809 and 810:
Clustering Myricom, Inc. http://www
Page 811 and 812:
Very high-speed Backbone Network Se
Page 813 and 814:
Gigapops Who will be operating them
Page 815 and 816:
Terabit per second == 10 12 Future
Page 817 and 818:
Active networks A C F,d C F(d) A B
Page 819 and 820:
Internetworking as the future? Now
Page 821 and 822:
Counter currents However, there are
Page 823 and 824:
Implicit vs. Explicit Information V
Page 825 and 826:
Peer to peer networking Lots of the
Page 827 and 828:
Resource pooling Damon Wischik, Mar
Page 829 and 830:
Context of the module Personal comm
Page 831 and 832:
Personal monitoring Darwin Valderas
Page 833 and 834:
Vehicular ad hoc networks (VANETs)
Page 835 and 836:
Packages Logistics (tracking, routi
Page 837 and 838:
Appliances • Is the refrigerator
Page 839 and 840:
Environment Monitoring air and wate
Page 841 and 842:
Trossen’s Tussle Internet User Ag
Page 843 and 844:
Trossen’s Design principles to Ar
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• Server and Network Bandwidth an
Page 847 and 848:
Evolution of new varieties of netwo
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How do I know where I am? Location
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Requirements • Systems with which
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Badge Communications Model Badges a
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Smart Badge Sensors Details of the
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A view of the packaged badge As sho
Page 859 and 860:
Split the functions between access
Page 861 and 862:
Personal Computing and Communicatio
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Future Systems Audio I/O GPS source
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Non-metalic bi-directional neural i
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Spotting trends at 1% Mark J. Penn
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Further Reading [1] Kalevi Kilkki,
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[23] Darwin Valderas Núñez, “In
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Thanks Best wishes on your written
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Internets - configuration 1 Figure
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Adding a firewall and router Intern
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Adding a WiMAX link Internets - con
Page 881:
Adding two-way multimedia Configura
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