... supposed that 2 IP sub -network share physically the same LAN. The stations on each
sub -network then will see circulating all the packets diffused on the physic network.
1
The network layer
Addressing ... rental
lease)
7
- Engineers network link: 2B-14-62-91-C9-B1
- Engineers network link towards the external router: 2B-14-62-3F-39-21
- Commercial network link: 1C-96-AA-F4-C2-91
- Commercial network link towards ... of an IPv6 service node must provide a means to an upper layer
protocol Plasser bit value Traffic Class for packets from the upper layer protocol. The
default value should be zero for all 8 bits.
The...
... sử dụng
rộng rãi nhất.
- Công nghệ SNMP Simple Network Management Protocol là dựa trên
TCP/IP protocol dùng trong việc quản lý các device trên network. Những
thiết bị thông thường (giá từ ngàn ... nói chung được gọi là NMS( Network Managerment
System) bao gồm:
+ WMI (Web management interface)
+ CLI (Command Line Interface)
+ SNMP (Simple Network Management Protocol)
Trong đó, SNMP ... định dạng bởi các gói tin PDU (Protocol Data Unit). Các manager và
agent sử dụng PDU để trao đổi với nhau
Network Management Station (NMS)
Manager cũng được gọi là Network Management Station(...
... www.bkacad.com 39
Network Layer Protocols and Internet Protocol (IP)
Học viện mạng Bách khoa - Website: www.bkacad.com 3
• Define the basic role of the NetworkLayer in data networks
• The protocols ... Identify the role of the Network Layer, as it describes
communication from one end device to another end device
• Examine the most commonNetworkLayer protocol, Internet
Protocol (IP), and its ...
the control communication
between the Data Link layer and
the Networklayer is the
establishment of a maximum size
for the packet.
Network Layer Fields
Học viện mạng Bách khoa - Website:...
... Method
Intruder
Model
Analysis
Tool
Formal
Protocol
Informal
Protocol
Description
Find error
24
Protocol composition logic
Alice’s information
Protocol
Private data
Sends and receives
Honest ... 3-way
handshake
Short-Password Key
Exchange Protocol
802.16e Multicast-
Broadcast Key
Distribution Protocols
MOBIKE - IKEv2
Mobility and Multihoming
Protocol
Analysis of ZRTPOnion Routing
Security ... sub-protocols
The postconditions of TLS imply the
preconditions of the 4-Way handshake
The postconditions of 4-Way handshake imply
the preconditions of the Group Key protocol
13
Run of protocol
A
B
Initiate
Respond
C
D
Correct...
... ICMP
The IP protocol has no error-reporting or error-
The IP protocol has no error-reporting or error-
correcting mechanism. The IP protocol also lacks a
correcting mechanism. The IP protocol also ... Management Protocol (IGMP) is one
Internet Group Management Protocol (IGMP) is one
of the necessary, but not sufficient, protocols that is
of the necessary, but not sufficient, protocols that ...
designed to compensate for the above two deficiencies.
It is a companion to the IP protocol.
It is a companion to the IP protocol.
Types of Messages
Message Format
Error Reporting and Query
Debugging...
... mask matching
22.34
Figure 22.17 Two-node instability
22.27
22-3 UNICAST ROUTING PROTOCOLS
22-3 UNICAST ROUTING PROTOCOLS
A routing table can be either static or dynamic. A
A routing table can ... Internet. A routing
a change somewhere in the Internet. A routing
protocol is a combination of rules and procedures that
protocol is a combination of rules and procedures that
lets routers ... not
match the corresponding network address.
2. The second mask (/25) is applied to the destination
address. The result is 201.4.22.0, which does not
match the corresponding network address (row 2).
22.43
Figure...
... Networks
5.2 Public-Key Infrastructure
5.3 IPsec: A Security Protocol at the Network Layer
5.4 SSL/TLS: Security Protocols at the Transport
Layer
5.5 PGP and S/MIME: Email Security Protocols
5.6 ... Networks
5.2 Public-Key Infrastructure
5.3 IPsec: A Security Protocol at the Network Layer
5.4 SSL/TLS: Security Protocols at the Transport
Layer
5.5 PGP and S/MIME: Email Security Protocols
5.6 ... Protocols at the Transport
Layer
5.5 PGP and S/MIME: Email Security Protocols
5.6 Kerberos: An Authentication Protocol
5.7 SSH: Security Protocols for Remote Logins
J. Wang. Computer Network...
... advantage of whatever network- layer secu-
rity services their environment provides. More impor-
tantly, IPsec offers a remarkable flexibility not possible
at higher or lower network layers: security ... is comprised of a
set of protocols that provide data integrity, confidential-
ity, replay protection, and authentication at the network
layer. This positioning in the network stack offers con-
siderable ... IPsec by
maximizing network traffic using ttcp. In our next set
of experiments, we investigate how IPsec behaves under
“normal” network load and how it compares with other
secure network transfer...
... made to enhance network performance
using striping techniques at the link -layer, transport -layer, and application -layer. We are
the first to implement and evaluate a transport -layer protocol that ... robustness.
Based on the networklayer where the striping techniques are applied, we classify them
into link -layer, transport -layer, and application -layer striping.
2.1 Network Testbeds
We evaluate ... striping without requiring any changes to the upper layers of the
protocol stack.
Another area of related work is the use of striping at the application -layer to improve
throughput by opening multiple...
... Message Protocol. DARPA Network
Working Group Report RFC-792, USC Information
Sciences Institute, September 1981.
8. Defense Advanced Research Projects Agency. In-
ternet Protocol. DARPA Network ... synchronizing network
clocks. DARPA Network Working Group Report
RFC-956, M/A-COM Linkabit, September 1985.
20. Mills, D.L. Experiments in network clock synchro-
nization. DARPA Network Working ... Time Protocol. DARPA Network Working
Group Report RFC-1129, University of Delaware,
October 1989.
24. Mills, D.L. On the accuracy and stability of clocks
synchronized by the Network Time Protocol...
...
Timestamp
• Second protocol saves messages, fits more
easily into existing protocols that expect
passwords
• First protocol does not require synchonized
clocks
• Second protocol must keep a ... countermeasures
– ATM: eat your card
– military: shoot you
– networking: lock account (subject to DOS) or be
slow per attempt
1
Network Security Protocols:
A Tutorial
Radia Perlman
May 2005
(radia.perlman@sun.com)
25
Cryptographic...