worst planning for the worst
ip network design guide
Ngày tải lên :
24/08/2014, 17:20
... on the network The more workstations, the more likely collisions will occur • The length of the network The longer the network, the greater the chance for collisions to occur • The length of the ... or the IEEE 802.3u standard, is 10 times faster than the 10 Mbps Ethernet The cabling used for Fast Ethernet is 100BaseTx, 100BaseT4 and the 100BaseFx The framing used in Fast Ethernet is the ... that used in Ethernet Therefore it is very easy for network managers to upgrade from Ethernet to Fast Ethernet Since the framing and size are the same as that of Ethernet and yet the speed has...
- 324
- 367
- 0
TCP/IP Overview
Ngày tải lên :
18/10/2013, 17:15
... protocols and their relationship to the OSI Reference Model For information on the OSI Reference model and the role of each layer, please refer to the document Internetworking Basics The Internet ... information The router would then use IGRP information when available If the source of IGRP information failed, the router automatically would use RIP information as a backup until the IGRP source ... protocol that derived the route, the reliability of the source, the next IP address to send to, the router interface to use, whether the network is subnetted, whether the network in question is directly...
- 15
- 253
- 0
Tài liệu TCP/IP Overview docx
Ngày tải lên :
10/12/2013, 17:15
... protocols and their relationship to the OSI Reference Model For information on the OSI Reference model and the role of each layer, please refer to the document Internetworking Basics The Internet ... information The router would then use IGRP information when available If the source of IGRP information failed, the router automatically would use RIP information as a backup until the IGRP source ... protocol that derived the route, the reliability of the source, the next IP address to send to, the router interface to use, whether the network is subnetted, whether the network in question is directly...
- 15
- 380
- 0
Tài liệu TCP/IP Tutorial and Technical Overview ppt
Ngày tải lên :
23/12/2013, 02:19
... interface for these applications, independent of the underlying physical network The architecture of the physical network is therefore hidden from the user and from the developer of the application The ... 794 for more information about firewalls 1.2 The roots of the Internet Networks have become a fundamental, if not the most important, part of today's information systems They form the backbone for ... it, they defined the Information Services (IS), which is comprised of an Information Center and a Technical Support Group The Information Center is responsible for information dissemination, information...
- 1K
- 518
- 0
Tài liệu TCP/IP Overview ppt
Ngày tải lên :
24/01/2014, 10:20
... protocols and their relationship to the OSI Reference Model For information on the OSI Reference model and the role of each layer, please refer to the document Internetworking Basics The Internet ... information The router would then use IGRP information when available If the source of IGRP information failed, the router automatically would use RIP information as a backup until the IGRP source ... protocol that derived the route, the reliability of the source, the next IP address to send to, the router interface to use, whether the network is subnetted, whether the network in question is directly...
- 15
- 238
- 0
Tài liệu TCP/IP Tutorial and Technical Overview docx
Ngày tải lên :
27/01/2014, 08:20
... interface for these applications, independent of the underlying physical network The architecture of the physical network is therefore hidden from the user and from the developer of the application The ... 794 for more information about firewalls 1.2 The roots of the Internet Networks have become a fundamental, if not the most important, part of today's information systems They form the backbone for ... it, they defined the Information Services (IS), which is comprised of an Information Center and a Technical Support Group The Information Center is responsible for information dissemination, information...
- 1K
- 2.3K
- 1
Tài liệu TCP/IP Tutorial and Technical Overview pdf
Ngày tải lên :
18/02/2014, 00:20
... interface for these applications, independent of the underlying physical network The architecture of the physical network is therefore hidden from the user and from the developer of the application The ... 794 for more information about firewalls 1.2 The roots of the Internet Networks have become a fundamental, if not the most important, part of today's information systems They form the backbone for ... it, they defined the Information Services (IS), which is comprised of an Information Center and a Technical Support Group The Information Center is responsible for information dissemination, information...
- 1K
- 1.8K
- 0
TCP/IP Tutorial and Technical Overview phần 1 docx
Ngày tải lên :
14/08/2014, 14:20
... interface for these applications, independent of the underlying physical network The architecture of the physical network is therefore hidden from the user and from the developer of the application The ... 794 for more information about firewalls 1.2 The roots of the Internet Networks have become a fundamental, if not the most important, part of today's information systems They form the backbone for ... it, they defined the Information Services (IS), which is comprised of an Information Center and a Technical Support Group The Information Center is responsible for information dissemination, information...
- 101
- 220
- 0
TCP/IP Tutorial and Technical Overview phần 2 ppt
Ngày tải lên :
14/08/2014, 14:20
... that performs the duties of a router.) The address of the first gateway (the first hop) is called an indirect route in the IP routing algorithm The address of the first gateway is the only information ... options The Options field is variable in length (there can be zero or more options) There are two option formats The format for each is dependent on the value of the option number found in the first ... address for an IP packet, the checksum is also adjusted For FTP packets, the task is even more difficult, because the packets can contain addresses in the data of the packet For example, the FTP...
- 100
- 229
- 0
TCP/IP Tutorial and Technical Overview phần 3 ppt
Ngày tải lên :
14/08/2014, 14:20
... algorithm The SPF algorithm is used to process the information in the topology database It provides a tree-representation of the network The device running the SPF algorithm is the root of the tree The ... external routes They differ in the way the cost of the route is calculated The ASBR is configured to redistribute the route as: External type 1: The total cost of the route is the sum of the external ... in the AS_PATH AGGREGATOR: This attribute indicates the last AS number that formed the aggregate route, followed by the IP address of the BGP speaker that formed the aggregate route For further...
- 100
- 249
- 0
TCP/IP Tutorial and Technical Overview phần 4 pptx
Ngày tải lên :
14/08/2014, 14:20
... must occur at the end of the message The order of the other objects follows the recommendation from the RFC For a detailed description of the RSVP message structure and the handling of the different ... from the last hop field in the message, which is the address of the sender Then the router inserts its own IP address into the last hop field, sends the path message to the next router, and the ... through the foreign agent, which forwards the request to the home agent, or directly with the home agent (see Figure 7-4 on page 281) After the home agent has registered the care-of address for the...
- 100
- 379
- 0
TCP/IP Tutorial and Technical Overview phần 5 ppt
Ngày tải lên :
14/08/2014, 14:20
... configured for this subnet The router therefore adds an IPv4 header to the packet, with a destination address of the tunnel-end (router Y) and forwards the datagram over the IPv4 network The IPv4 ... the low-order 32 bits of the IP address) In the reverse Chapter IP version 387 direction, the router adds the ::FFFF /96 prefix to the IPv4 address to form the IPv4-mapped address If either the ... on the same system as the server instance Through the client, a user can generate a request for the service provided by the server The request is then delivered to the server using TCP/IP as the...
- 100
- 195
- 0
TCP/IP Tutorial and Technical Overview phần 6 pps
Ngày tải lên :
14/08/2014, 14:20
... sends the EPAC and other information in an encrypted PTGT envelope to the client The client decrypts the PTGT envelope using the PS conversation key Also, the client has the conversation key information ... requests a service ticket for the application server The AS receives the PTGT and decrypts it to obtain the EPAC information It encrypts the EPAC information with the secret key of the application server ... encrypted with the conversation key of the AS The AS receives this request Using the secret key of the PS, the AS generates a conversation key for the client to use when contacting the PS This is...
- 100
- 324
- 0
TCP/IP Tutorial and Technical Overview phần 7 doc
Ngày tải lên :
14/08/2014, 14:20
... receives the message and sends the message to the underlying protocols with an appropriate format A tunnel does not deal with the content of the message; therefore, it simply forwards the message ... both treat the data as an octet-stream This is also true for the conversion from Quoted-Printable to either of the other two (in the case of the Quoted-Printable to binary conversion, the process ... enters the update state During this state, the server enacts all of the changes requested by the client’s commands and then close the connection If the connection is closed, for any reason, before...
- 100
- 210
- 0
TCP/IP Tutorial and Technical Overview phần 8 ppt
Ngày tải lên :
14/08/2014, 14:20
... designates the layer providing the service For the transaction layer, it is TR The primitive types and their abbreviations are the same as described for WDP (see Table 18-1 on page 674) There are ... received by the server The third sequence returns the result request (reply to the inquiry) from the server to the client The fourth sequence confirms the receipt to the server that the reply was received ... SUSPEND 684 The rules of the protocol prevented the peer from performing the operation in its current state For example, the used PDU was not allowed The session was suspended while the operation...
- 100
- 185
- 0
TCP/IP Tutorial and Technical Overview phần 9 ppsx
Ngày tải lên :
14/08/2014, 14:20
... and authentication: The sender calculates the hash of the message and appends it to the message The recipient calculates the hash of the received message and then compares the result with the transmitted ... called the keyspace The keyspace usually is huge, the bigger the better The security of these algorithms rely entirely on the key, not on their internal secrets In fact, the algorithms themselves ... used in the 16 rounds of the algorithm DES produces ciphertexts the same length as the cleartext and the decryption algorithm is exactly the same as the encryption, the only difference being the...
- 100
- 199
- 0
TCP/IP Tutorial and Technical Overview phần 10 ppsx
Ngày tải lên :
14/08/2014, 14:20
... to the desired LNS at the entry to the enterprise The LNS authenticates the remote user through its authentication server and accepts the tunnel The LNS confirms acceptance of the call and the ... and authentication server The authentication server verifies and validates the authenticity of the supplicant to access the network resources The authenticator grants or rejects access for the ... Figure 23-16 shows the complete format for the EAP-Failure packet The Code field in the EAP header is for the EAP-Failure packet All the remaining fields are the same as that of the EAP-Success...
- 103
- 194
- 0
Giao thức lõi IP và TCP/IP
Ngày tải lên :
13/08/2012, 16:23
... phõn on (More Fragments Flag), s ch cũn phõn on khỏc tip theo hay khụng C ny khụng c t phõn on cui cựng, bi vỡ khụng cũn phõn on no tip theo nú V trớ phõn on (Fragment Offset) ch v trớ tng i ca ... tin d liu IP (IP payload) gc thnh nhiu on cho kớch thc va vi kớch thc n v truyn tin ca mng tip theo Mi on c gi i vi phn u gúi tin IP riờng ca nú cha: Cỏc giao thc lừi TCP/IP IP Trng nh danh (identification) ... tin gc Quỏ trỡnh ny gi l phõn on Phõn on cú th xy mụi trng s dng kt hp nhiu cụng ngh mng, vớ d c Ethernet v Token Ring Vic phõn on v hp c thc hin nh sau: Khi mt gúi tin IP c gi bi ngun gi, nú t...
- 29
- 871
- 4
Internet và mô hình tham chiếu TCP/IP
Ngày tải lên :
13/08/2012, 16:32
... nguyên tắc tham chiếu, cung cấp URI (Uniform Request Identifier), nh URL (Uniform Request Location) URN (Uniform Request Name) Các thông báo (messages) đợc truyền theo định dạng giống nh Internet Mail, ... hạn tối thiểu (Last Privilege) Theo chiến lợc đối tợng có quyền hạn định thông tin tài nguyên mạng Đây chiến lợc tảng b Bảo vệ theo chiều sâu (Defence In Depth) Theo nguyên tắc này, cần tạo nhiều ... đợc thiết kế theo hai tiếp cận Firewall lọc gói (packet-filtering) dùng phơng pháp khám xét tận đáy (strip search) Các gói liệu trớc hết đợc kiểm tra, sau đợc trả lại cho phép vào theo số điều...
- 15
- 1.8K
- 10
Tài liệu khái niệm TCP IP
Ngày tải lên :
14/08/2012, 08:36
... công vũ khí nguyên tử Kết TCP/IP Sau nầy Internet Society (Hội Internet) dùng nhóm tư vấn mang tên The Internet Architecture Board (IAB) (Ban Kiến trúc Internet) để trông coi việc làm cho TCP/IP ... nghị với Ban người ta xin Ban đăng lên thông báo cho quan tâm có ý kiến Bản thông báo gọi Request for Comments (RFC) (Yêu cầu cho biết ý kiến) Nếu đa số guru TCP/IP thấy hay lần lần đề nghị đuợc ... mừng cho xin Class C network Các loại Servers Có ba thứ dịch vụ ta thường dùng Internet Ðó Surfing the Web ( chu du ta bà giới từ trang Web nầy đến trang Web khác), Email download File cách dùng...
- 10
- 1.1K
- 11