tcp ip security problem overview

... cập đến hỗ trợ giao thức TCP / IP 2.2.2 Xem xét giao thức TCP/ IP 23 Để thu đánh giá cách thức hoạt động danh sách truy cập IP, xem xét tóm tắt thứ tự phần giao thức TCP/ IP Tại lớp ứng dụng nội ... động lớp dẫn đến tiêu đề IP thêm vào trước tiêu đề TCP UDP Tiêu đề chứa địa IP đích địa IP nguồn 32-bit chuẩn IPv4 Chúng thường xuyên mã hóa địa IP cấu hình giao thức bốn số thập phân tách rời dấu ... từ 100 đến 199 để phân biệt chúng từ danh sách truy cập chuẩn IP Tham số giao thức định nghĩa rõ giao thức TCP/ IP, chẳng hạn ip, tcp, UDP, ICMP số định tuyến giao thức lọc Ví dụ sau gồm giao...

Ngày tải lên: 25/04/2013, 19:06

... body Nobody "owns" TCP/ IP Or rather, everybody does • TCP/ IP is robust TCP/ IP was designed when telecommunications lines between computers were not completely reliable, so the TCP/ IP protocols will ... protocol, such as IPX/SPX or SNA? TCP/ IP has won out over other protocols that might have competed for world domination for the following reasons: • TCP/ IP is packet based With TCP/ IP, many communicating ... temporarily interrupted communications TCP/ IP will even route around damaged portions of the Internet • TCP/ IP is flexible TCP/ IP is a protocol suite, with IP and a few other simple protocols at...

Ngày tải lên: 29/09/2013, 13:20

... designed to handle the scaling problems of the growing Internet Cisco − TCP/ IP Overview Cisco's TCP/ IP Implementation In addition to IP and TCP, the Cisco TCP/ IP implementation supports ARP, ... Information 11 i TCP/ IP Overview Document ID: 13769 Introduction TCP/ IP Technology TCP IP Routing in IP Environments Interior Routing Protocols RIP IGRP EIGRP OSPF Integrated IS−IS ... Cisco − TCP/ IP Overview Table of Contents TCP/ IP Overview Document ID: 13769 Introduction TCP/ IP Technology TCP ...

Ngày tải lên: 18/10/2013, 17:15

... designed to handle the scaling problems of the growing Internet Cisco − TCP/ IP Overview Cisco's TCP/ IP Implementation In addition to IP and TCP, the Cisco TCP/ IP implementation supports ARP, ... Information 11 i TCP/ IP Overview Document ID: 13769 Introduction TCP/ IP Technology TCP IP Routing in IP Environments Interior Routing Protocols RIP IGRP EIGRP OSPF Integrated IS−IS ... Cisco − TCP/ IP Overview Table of Contents TCP/ IP Overview Document ID: 13769 Introduction TCP/ IP Technology TCP ...

Ngày tải lên: 10/12/2013, 17:15

... rights reserved xix TCP/ IP and System p: http://www.ibm.com/systems/p/library/index.html TCP/ IP and System i: http://www.ibm.com/servers/eserver/iseries/tcpip/index.html TCP/ IP and System x: http://www.ibm.com/servers/eserver/support/xseries/allproducts/insta ... the IP layer of the TCP/ IP protocol stack, so any host or workstation running TCP/ IP over more than one interface could, in theory and also with most of today's TCP/ IP implementations, forward IP ... NY 12601-5400 Preface xxiii xxiv TCP/ IP Tutorial and Technical Overview Part Part Core TCP/ IP protocols The Transmission Control Protocol/Internet Protocol (TCP/ IP) suite has become the industry-standard...

Ngày tải lên: 23/12/2013, 02:19

... designed to handle the scaling problems of the growing Internet Cisco − TCP/ IP Overview Cisco's TCP/ IP Implementation In addition to IP and TCP, the Cisco TCP/ IP implementation supports ARP, ... Information 11 i TCP/ IP Overview Document ID: 13769 Introduction TCP/ IP Technology TCP IP Routing in IP Environments Interior Routing Protocols RIP IGRP EIGRP OSPF Integrated IS−IS ... Cisco − TCP/ IP Overview Table of Contents TCP/ IP Overview Document ID: 13769 Introduction TCP/ IP Technology TCP ...

Ngày tải lên: 24/01/2014, 10:20

... rights reserved xix TCP/ IP and System p: http://www.ibm.com/systems/p/library/index.html TCP/ IP and System i: http://www.ibm.com/servers/eserver/iseries/tcpip/index.html TCP/ IP and System x: http://www.ibm.com/servers/eserver/support/xseries/allproducts/insta ... the IP layer of the TCP/ IP protocol stack, so any host or workstation running TCP/ IP over more than one interface could, in theory and also with most of today's TCP/ IP implementations, forward IP ... NY 12601-5400 Preface xxiii xxiv TCP/ IP Tutorial and Technical Overview Part Part Core TCP/ IP protocols The Transmission Control Protocol/Internet Protocol (TCP/ IP) suite has become the industry-standard...

Ngày tải lên: 27/01/2014, 08:20

... rights reserved xix TCP/ IP and System p: http://www.ibm.com/systems/p/library/index.html TCP/ IP and System i: http://www.ibm.com/servers/eserver/iseries/tcpip/index.html TCP/ IP and System x: http://www.ibm.com/servers/eserver/support/xseries/allproducts/insta ... the IP layer of the TCP/ IP protocol stack, so any host or workstation running TCP/ IP over more than one interface could, in theory and also with most of today's TCP/ IP implementations, forward IP ... NY 12601-5400 Preface xxiii xxiv TCP/ IP Tutorial and Technical Overview Part Part Core TCP/ IP protocols The Transmission Control Protocol/Internet Protocol (TCP/ IP) suite has become the industry-standard...

Ngày tải lên: 18/02/2014, 00:20

... rights reserved xix TCP/ IP and System p: http://www.ibm.com/systems/p/library/index.html TCP/ IP and System i: http://www.ibm.com/servers/eserver/iseries/tcpip/index.html TCP/ IP and System x: http://www.ibm.com/servers/eserver/support/xseries/allproducts/insta ... the IP layer of the TCP/ IP protocol stack, so any host or workstation running TCP/ IP over more than one interface could, in theory and also with most of today's TCP/ IP implementations, forward IP ... NY 12601-5400 Preface xxiii xxiv TCP/ IP Tutorial and Technical Overview Part Part Core TCP/ IP protocols The Transmission Control Protocol/Internet Protocol (TCP/ IP) suite has become the industry-standard...

Ngày tải lên: 14/08/2014, 14:20

... to route IP packets back to a private IP address, there is no point in sending IP packets with private IP addresses as source IP addresses through a router into the Internet 90 TCP/ IP Tutorial ... base IP datagram physical network header IP datagram as data encapsulated within the physical network's frame Figure 3-16 IP: Format of a base IP datagram 98 TCP/ IP Tutorial and Technical Overview ... information in an IP packet This becomes an issue when IPSec is used Refer to 22.4, IP Security Architecture (IPSec)” on page 809 and 22.10, “Virtual private networks (VPNs) overview on page...

Ngày tải lên: 14/08/2014, 14:20

... terminology OSPF/RIP OSPF/RIP OSPF/RIP OSPF/RIP BGP Speaker OSPF/RIP BGP Speaker IBGP EBGP OSPF/RIP BGP Speaker OSPF/RIP OSPF/RIP AS1 AS2 EBGP OSPF/RIP BGP Speaker OSPF/RIP IBGP OSPF/RIP BGP Speaker ... observed in RIP-1 RIP-2 is described in RFC 2453 The standard (STD 56) was published in late 1994 In practice, the term RIP refers to RIP-1 Whenever you encounter the term RIP in TCP/ IP literature, ... 188 TCP/ IP Tutorial and Technical Overview 5.3.6 RIP limitations There are a number of limitations observed in RIP environments: Path cost limits: The resolution to the counting to infinity problem...

Ngày tải lên: 14/08/2014, 14:20

... Host Application Application Data Data TCP TCP TCP TCP Data IP Classifier Marker IP DS Byte IP IP TCP Data Classifier Router Data Marker IP DS Byte TCP Data TCP Data Router Initial marking in the ... 324 TCP/ IP Tutorial and Technical Overview Processing of the DS field in the presence of IPSec tunnels then works as follows : The node where the IPSec tunnel begins encapsulates the incoming IP ... throughout this chapter: RFC 3344 – IP Mobility Support (August 2002) 286 TCP/ IP Tutorial and Technical Overview Chapter Quality of service With the increased use of the IP based networks, including...

Ngày tải lên: 14/08/2014, 14:20

... the same link IPv4 Host IPv6/IPv4 Host IPv6 Host App App App TCP TCP TCP IPv4 Ethernet IPv4 Ethernet IPv6 Ethernet IPv4 Ethernet Figure 9-25 IPv6/IPv4 dual stack system The IPv6/IPv4 node can ... the IPv4 header is stripped from the datagram and the remaining IPv6 packet is then handled by the IPv6 stack 384 TCP/ IP Tutorial and Technical Overview IPv4 Network B A X IPv6/IPv4 Host (2) Y IPv6/IPv4 ... destination IPv6 address, and forwards the packet Workstation B receives the IP6 packet 386 TCP/ IP Tutorial and Technical Overview IPv4 Network B A X Y (2) IPv6 Host (1) (3) IPv6/IPv4 Router IPv6/IPv4...

Ngày tải lên: 14/08/2014, 14:20

... Enhancements (June 1998) 512 TCP/ IP Tutorial and Technical Overview 14 Chapter 14 File-related protocols The TCP/ IP protocol suite provides a number of protocols for the manipulation of files In general, ... Using FTP with IPv6 The increasing use of IP version (IPv6) in networks has little effect on FTP implementations, because IPv6 addressing is managed by the IP layer (see Chapter 9, IP version 6” ... and client are linked over the TCP/ IP network REXEC uses TCP port 512 and RSH uses TCP port 514 See Figure 13-5 for more details Figure 13-5 REXEC: REXECD principle 13.3 Introduction to the Distributed...

Ngày tải lên: 14/08/2014, 14:20

... PostScript interpreter to process application/PostScript types poses serious security problems Any mail reader that automatically interprets PostScript programs is equivalent, in principle, to ... environment Two subtypes are defined initially: – PostScript: Adobe Systems PostScript (Level or Level 2) PostScript security issues: Although PostScript is often thought of as a format for printer data, ... such as file systems, and it can communicate with other systems 616 TCP/ IP Tutorial and Technical Overview JavaScript JavaScript™ is an HTML extension and programming language, developed by Netscape,...

Ngày tải lên: 14/08/2014, 14:20

... resources 722 TCP/ IP Tutorial and Technical Overview 20 Chapter 20 Voice over Internet Protocol This chapter contains the following topics: An overview of VoIP Benefits of VoIP VoIP components SIP technology ... Presence over IP 719 720 TCP/ IP Tutorial and Technical Overview Part Part Advanced concepts and new technologies As networks and networked resources continue to become more omnipresent in modern ... can simply be an IP router, as illustrated in Figure 18-20 on page 696 Chapter 18 Wireless Application Protocol 695 Wireless client Origin server HTTP HTTP WTLS TLS WP -TCP TCP IP IP Router Wireless...

Ngày tải lên: 14/08/2014, 14:20

... filtered, a security problem can arise To minimize security problems, trusted services and resources need to be used on the outside network (untrusted network) 804 TCP/ IP Tutorial and Technical Overview ... protocol directly For example, NetBIOS or IPX can be encapsulated in IP to carry it over a TCP/ IP WAN link In the case of IPSec, IP is tunneled through IP for a slightly different purpose: To provide ... authentication are selected However, the new IP header is still not protected IP Hdr Payload New IP Hdr IP Hdr New IP Hdr ESP Hdr Original IP datagram Payload IP Hdr Tunneled datagram Payload ESP Trl...

Ngày tải lên: 14/08/2014, 14:20

... page 872) 878 TCP/ IP Tutorial and Technical Overview IP L2TP Code Data UDP L2TP PPP Data IP Code L2 Net IP Code IP Cloud L2TP Code Data L2 Net Figure 22-55 L2TP packet flow through any IP cloud 22.14.3 ... On-line Signing (April 2006) Chapter 22 TCP/ IP security 887 888 TCP/ IP Tutorial and Technical Overview 23 Chapter 23 Port based network access control IP networks are often deployed without a ... – The Security Flag in the IPv4 Header (April 2003) RFC 3586 – IP Security Policy (IPSP) Requirements (August 2003) RFC 3686 – Using Advanced Encryption Standard (AES) Counter Mode With IPSec...

Ngày tải lên: 14/08/2014, 14:20

... hn, nh TCP IP c nh ngha RFC 791 Cỏc giao thc lừi TCP/ IP IP Mt gúi tin IP bao gm mt phn u gúi tin IP (IP header) v mt phn d liu gúi tin IP (IP payload) Bng mụ t cỏc trng chớnh phn u gúi tin IP Cỏc ... giao thc IP Khi mt gúi tin IP c truyn tip, router cn gim giỏ tr ca TTL ớt nht l Cỏc giao thc lừi TCP/ IP IP Nu router nhn c mt gúi tin IP quỏ ln i vi mng ú gúi tin c gi tip i, gúi tin IP s c phõn ... Cỏc trng phn u gúi tin IP Chc nng a ch IP ngun a ch IP ca ngun truyn gúi tin IP a ch IP ớch a ch IP ớch n ca gúi tin IP nh danh (Identification) c s dng xỏc nh gúi tin IP c th v xỏc nh tt c...

Ngày tải lên: 13/08/2012, 16:23

... giao thức TCP/ IP Hình 6.2 - Sơ đồ giao thức TCP/ IP Mô hình TCP/ IP hớng đến tối đa độ linh hoạt lớp ứng dụng cho ngời phát triển phần mềm Lớp vận chuyển liên quan đến hai giao thức TCP UDP (user ... hiển vi phân tích mạng , nhng giao thức lại TCP/ IP Hình 6.4 - Tơng quan mô hình OSI v giao thức TCP/ IP Để quản lý mạng, Internet thờng dùng số địa sau: - IP Address: gồm bốn byte, cách dấu chấm Thông ... máy tính nào, đâu, truyền liệu vào thời điểm 6.1.4 - So sánh mô hình OSI mô hình TCP/ IP 108 Hình 6.3 - So sánh TCP/ IP với OSI Các mạng thông thờng không đợc xây dựng dựa giao thức OSI, OSI đợc dùng...

Ngày tải lên: 13/08/2012, 16:32