EAP. See Extensible Authentication Protocol
EAPoL, 649
Earthlink, 523
eavesdropping, 596
e-Bay, 64
eBGP. See external BGP
EC2, 65
ECE. See Explicit Congestion Notification Echo
echo request, 419
ECN. See Explicit Congestion Notification
edge routers, 314
Educause, 131
efficiency
of CSMA/CD, 464
of slotted ALOHA, 457–458
of slotted multiple access protocols, 457
802.11. See IEEE 802.11
EIGRP protocol, 392
elastic applications, 92
e-mail, 116–126
access protocols, 122–126
IMAP, 123, 125–126
message formats, 121–122
securing, 626–631
servers, 116–117, 128
SMTP, 50, 97, 118–123
web-based, 126
encapsulation, 53–55
Encapsulation Security Payload (ESP), 640, 642–643
encrypted, 594
encryption
attack types against, 599
passwords, 623–624
polyalphabetic, 599–600
public key, 597, 604–610, 630, 636
security associations and, 641
standards for, 602
symmetric key, 598–604
encryption algorithm, 597
end-end principle, 205
end-point authentication, 58–59, 595
end systems, 2, 4, 9, 11
end-to-end congestion control, 268
end-to-end connection, 27
end-to-end delay, 41–43, 689, 690
enhanced packet core (EPC), 558
eNodeB, 558
enter deep, 150, 151
entity body, 106
EPC. See enhanced packet core
error checking, UDP checksums and, 204–206
error correction, 443
bit-level, 444
techniques for, 444–451
error detection, 210, 443
bit-level, 444
checksumming, 448
parity bits, 446–448
techniques for, 444–451
ESP. See Encapsulation Security Payload
EstimatedRTT, 242
Estrin, Deborah, 589–591
Ethane project, 415–416
Ethernet, 5, 16–17, 443, 460, 474–475
binary exponential backoff in, 463
broadcast, 451
CSMA used by, 455
development of, 62
802.1Q-tagged VLAN frames, 490
frames, 501
frame structure, 476–478, 490
Gigabit, 480
MAC protocol, 479
MTU, 235
packet sniffing, 58
repeater, 479
run lengths, 479–480
speeds, 479–480
technologies, 478–481
topologies, 475
even parity schemes, 446
event-based programming, 225
EWMA. See exponential weighted moving average
expedited forwarding PHB, 722
Explicit Congestion Notification (ECN), 282–283
Explicit Congestion Notification Echo (ECE), 283
exponential weighted moving average (EWMA), 242
extended FSM, 224
Extensible Authentication Protocol (EAP), 649
external BGP (eBGP), 397