internet security and acceleration server 2006

... cụ ISA server 2006: 2.4.1/ Điểm yếu của của ISA server so với Forefront TMG 94 2.4.2/ Ưu điểm của ISA server 2006 so với ISA server 2004 96 2.5/ Lời khuyên dành cho nhà quản trị ISA server 98 ... triển khai 1 hệ thống mạng an toàn II/ ISA server: 2.1/ Giới thiệu: Microsoft Internet Security and Acceleration Sever (ISA Server) là ph n mềm share internet của hãng ph n mềm nổi tiếng Microsoft ... NGHỆ THÔNG TIN KHOA MẠNG MÁY TÍNH VÀ TRUYỀN THÔNG -o0o - BÁO CÁO ĐỀ TÀI ISA SERVER (Internet Security and Acceleration Server) MÔN: QUẢN TRỊ HỆ THỐNG MẠNG Download tài liệu miễn phí tại IKIDOC.COM

Ngày tải lên: 10/10/2022, 15:37

... Server 2006 firewall Nhìn chung, các ISA Server 2006client thýờng đýợc đặt trong một Internal hay perimeter network DMZ và kếtnối ra Internet qua ISA Server 2006 4.1 Phân loại Có 3 loại ISA Server ... đếnISA Server 2006 firewall ra Internet Web Proxy client là máy tắnh có trình duyệt internet (vd:InternetExplorer) đýợc cấu hình dùng ISA Server 2006 firewall nhý một Web Proxyserver của nó Web ... thống ISAServer (Standar và Enterprise) cho một Doanh nghiệp có số lượng nhân viêntrên 50 người Để cung cấp dịch vụ chia sẻ Internet, Doanh nghiệp sử dụng mộtđường ADSL và hệ thống ISA Server 2006

Ngày tải lên: 14/12/2013, 00:27

... chế reverse caching  Khi có một internet client truy cập vào một internal web server được publish thông qua ISA server,proxy server trên ISA sẽ truy cập web server,nhận phản hồi,cung cấp nội ... default gateway trỏ về card mạng bên trong của ISA server là được Trang 7Địa chỉ của máy ISA serverProxy ClientCấu hình máy ISA server làm proxy server  Firewall Client Trang 8Với Firewall Client ... mạngIII Proxy server  Một trong những đặc trưng khiến proxy server được ưa chuộng là khả năng caching, tức là khả năng lưu trữ các trang web mà proxy server từng truy cập  ISA server sẽ có khả

Ngày tải lên: 28/08/2017, 19:44

... chế reverse caching  Khi có một internet client truy cập vào một internal web server được publish thông qua ISA server,proxy server trên ISA sẽ truy cập web server,nhận phản hồi,cung cấp nội ... năng của phiên bản Standard bên cạnh đó còn cho phép thiết lập mảng các ISA server cung cấp khả năng Load Balancing Trang 5II Setup ISA 1 i d t  Chọn Install ISA Server 2006  Chọn chế độ cài ... cập internet  Như vậy ngay sau quá trình cài đặt ISA sẽ khóa tất cả mọi cổng ra vào của mạng chúng ta Trang 9 ịa chỉ của máy ISA server  Web Proxy Client Cấu hình máy ISA server làm proxy server

Ngày tải lên: 18/11/2017, 18:34

... the ISA Server firewall for internet access.A Web Proxy client is a computer with a web browser (e.g., Internet Explorer) configured to use the ISA Server 2006 firewall as its Web Proxy server ... Install Finish Đây là giao diện của ISA server 2006 sau khi chúng ta cài thành côngPHÂN LOẠI VÀ CẤU HÌNH ISA SERVER CLIENTSPhân loạiCó 3 loại ISA Server 2006 client: A SecureNAT client is a computer ... gateway setting that enables internet routing through an ISA Server 2006 firewall When the SecureNAT client is on a network directly connected to the ISA Server 2006 firewall, its default gateway

Ngày tải lên: 21/08/2023, 01:40

... TCP/IP Suite and Internet StackProtocols The Internet protocols consist of a suite of communication protocols, of which the two bestknown are the Transmission Control Protocol (TCP) and the Internet ... highest offset Trang 620 INTERNET SECURITYthrough an Internet This eight-bit field specifies how long (in number of seconds) thedatagram is allowed to remain in the Internet Routers and hosts that process ... to the network owner andunusable by other organisations Subnetting and supernetting The increasing number of hosts connected to the Internet and restrictions imposed by theInternet addressing

Ngày tải lên: 09/08/2014, 06:23

... project as a possiblecandidate The NBS requested the National Security Agency (NSA) to evaluate the algo-rithm’s security and to determine its suitability as a federal standard In November 1976,the ... Encryption Standard was adopted as a federal standard and authorised for use onall unclassified US government communications The official description of the standard, FIPS PUB 46, Data Encryption Standard ... keyvariable and an expanded key table of 26 words The key-expansion algorithm expands the user’s keyK to fill the expanded key tableS, so that S resembles an array of t = 2(r + 1) random binary

Ngày tải lên: 09/08/2014, 06:23

... Digest and Message Authentication CodeAs digital signature technology becomes more widely understood and utilised, manycountries world-wide are competitively developing their own signature standards ... digitallysigned, where sensitive information is being transmitted and security services such assender authentication, message integrity and non-repudiation are desired Financial trans-actions, in which ... 128 bits This scheme is appropriate for the use of digital signatures and hence it can be employed to increase Internet security The message to be signed is first divided into a sequence of 64-bit

Ngày tải lên: 09/08/2014, 06:23

... numberp and two random numbers, gandx, such that bothg < pandx < p, wherex is a private key The random numberg Trang 13is a primitive root modulop The public key is defined byy,gandp Then ... chooses a random integer X i and the userj a random integerX j.Then the user i picks a random number X i from the integer set {1, 2, , q − 1} Theuseri keepsX i secret, but sends and useK ij ... generate a key pair, first choose a prime p and two random numbers g and x suchthatg < p andx < p Then compute y ≡ g x (modp) The public key is (y, g, p) and the private key isx < p To encrypt

Ngày tải lên: 09/08/2014, 06:23

... destined to become Internet standards evolve through a set of maturity level as the standards evolve, which has three recognised levels: Proposed Standard, Draft Standard and Refined Standard. To review ... and end users Identification and authentication requirements for the PCA, CAs, ORAs and end users Security controls at the PCA and CA systems that generate certificates and CRLs Security ... p and q,ofthe primitive element g of p and of the private and public components x and y of each key are at the core of security in digital signatures. Therefore, whoever generates these keys and

Ngày tải lên: 09/08/2014, 06:23

... instance, the SSL and TLS for HTTP Web traffic,S/MIME and PGP for e-mail and IPsec for network layer security This chapter mainlyaddresses security only at the IP layer and describes various security services ... protocol and ISAKMP • Algorithms for authentication and encryption Internet Security. Edited by M.Y Rhee  2003 John Wiley & Sons, Ltd ISBN 0-470-85285-2 Trang 2244 INTERNET SECURITYThe set of security ... thefollowing functionalities: • Security Protocols for AH and ESP • Security Associations for policy management and traffic processing • Manual and automatic key management for the Internet Key Exchange

Ngày tải lên: 09/08/2014, 06:23

... clientand server The client hello and server hello establish the following attributes: protocolversion, random values (ClientHello.random and ServerHello.random), session ID, ciphersuite and compression ... message and encrypting itwith the sender’s public key Hence, the hash is defined as: md5-hash: MD5(ClientHello.random||ServerHello.random||serverParams) sha-hash: SHA(ClientHello.random||ServerHello.random||serverParams) ... to which the server must respond with a serverhello message, or else a fatal error will occur and the connection will fail The client helloand server hello are used to establish security enhancement

Ngày tải lên: 09/08/2014, 06:23

... Secure/Multipurpose Internet Mail Exten-sion (S/MIME) is a security enhancement to the MIME Internet e-mail format standard,based on technology from RSA Data Security Although both PGP and S/MIME are ... an IETF standards track, it appears likely thatPGP will remain the choice for personnel e-mail security for many users, while S/MIMEwill emerge as the industry standard for commercial and organisational ... implement and also fast In 1982 James Storer and Thomas Szymanski presented their scheme, LZSS, based on the work of Lempel and Ziv In LZSS, the compressor maintains a window of size N bytes and a

Ngày tải lên: 09/08/2014, 06:23

... modes (active and passive) In active mode, an FTP server receives commands on TCP/IP port 21 and exchanges data with the client When a client contacts an FTP server in active mode and wants to ... an unused local TCP port between 1024 and 65 535, tells the server over the command channel, and listens for the server to connect on the chosen port The server opens a connection from TCP port ... MTAs is SMTP and its extension ESMTP On the Internet, e-mail exchanges between mail servers are handled with SMTP It is the protocol that transfers e-mail from one server to another, and it provides

Ngày tải lên: 09/08/2014, 06:23

... generate the public and private keys, choose two random primes, p and q, andcompute the productn = pq For a short example demonstration, choosep= 47andq = 73; thenn= 3431andφ(n) = (p − 1)(q − ... use of othersecurity mechanisms such as IPsec and SSL/TLS Even though both technologiesaddress the issue of security, they work in different ways and provide different levels of security SET ... transactions over the Internet It is an industry-backed standard that was formed byMasterCard and Visa (acting as the governing body) in February 1996 To promote the SETstandard throughout the

Ngày tải lên: 09/08/2014, 06:23

... Bellovin/Aviel D Rubin, Firewalls and Internet Security, Second Edition: Repelling the Wily Hacker David A Curry, UNIX® System Security: A Guide for Lifers and System Administrators Stephen ... William R Firewalls and Internet security : repelling the wily hacker /William R Cheswick, Steven M Bellovin and Aviel D, Rubin.— 2nd ed, p cm Includes bibliographical references and index ISBN 020163466X ... mornings, and many other things And to Terry, Kestrel, and Lorette, who had TO put up with lengthy spates of grumpy editing sessions —W.R.C. To my parents, Sam and Sylvia Bellovin for everything, and

Ngày tải lên: 14/08/2014, 18:20

... of intentional and unintended security holes It contained one of the holes used by the Internet Worm [Spafford, 1989a, 1989b; Eichin and Rochlis, 1989; Rochlis and Eichin, 1989], and was mentioned ... simple protocol Postmasters and hackers learn these commands and occasionally type them by hand Notice that the caller specified a return address in the MAIL FROM command At this level, there is ... Advanced Encryption Standard (AES), and is being scrutinized by the security community It is not clear that the link layer is the right one for security In a coffeeshop the security association

Ngày tải lên: 14/08/2014, 18:20

... contained in a sandbox, a software j ail (six Section 8.5 and Chapter 16) to contain and limit their access to our local host and network These sandboxes vary between browsers and implementors ... is large and has had security bugs And programming is hard This is one of many judgment calls where experts can disagree 4.4 Web Servers vs Firewalls Suppose you have a Web server and a firewall ... the server If you do not, and must rely on protocols such as rlogin and NFS, the best solution is to sandwich the Web server in between two firewalls (Figure 4.5) In other words, the net the server

Ngày tải lên: 14/08/2014, 18:20

... many hosts, which share trust: They live in the same security boat. Internet security relies on a long chain of security assumptions;, and the attacker need only find the weakest link. A generic ... improve the security and robustness of some of this software. Hosts are also scanned for active ports. They seek active network services, and often identify the server software and versions. ... the then unused AT&T net 12.0.0.0/8 and monitored the incoming packet stream. We caught between 5 and 20 MB per day of random packets from the Internet. Some packets leaked out from networks

Ngày tải lên: 14/08/2014, 18:20

... history of security problems We use a heavily modified version of a standard ftpd program developed with help from Mar-cus Ranum and Norman Wilson Many cuts and few pastes were used The server allows ... even free of security holes, but he designed security in from the start Postfix was designed to be a safe and secure replacement for sendmail It handles large volumes of mail well, and does a reasonable ... battleground in the war between convenience and security: The original sandboxes containing Java programs have often been extended to near impotence by demands for greater access to a client's host

Ngày tải lên: 14/08/2014, 18:20