<![CDATA[Messages posted by "lehoang267"]]> /hvaonline/posts/listByUser/101928.html JForum - http://www.jforum.net Học cntt có cần phải giỏi Toán không?

kurtresmi wrote:
Em thi IQ ở BKACAD được 79.5/100, thi thử đầu vào CCNA được 70/100%, thi thử đầu vào CEH được 60/100% không biết đã đủ trình để học được security chưa hả các anh? :D  
Bạn nếu đang bắt đầu tìm hiểu CNTT thì chưa nên học CEH. CEH chỉ thích hợp khi bạn đã có kiến thức khá vững về mạng và lập trình.]]> /hvaonline/posts/preList/43442/269611.html#269611 /hvaonline/posts/preList/43442/269611.html#269611 GMT Học cntt có cần phải giỏi Toán không? /hvaonline/posts/preList/43442/269608.html#269608 /hvaonline/posts/preList/43442/269608.html#269608 GMT Cách thức hoạt động của Ultrasurf ?

Alkill wrote:
Cho em hỏi làm sao mà UltraSuft có thể chuyển hết các gói tin qua cổng 9666 đó. Mấy anh có tài liệu nào liên quan share em với :D 
Bạn tìm tài liệu về Windows Socket Programming nhé. :)]]> /hvaonline/posts/preList/40937/259471.html#259471 /hvaonline/posts/preList/40937/259471.html#259471 GMT Cách thức hoạt động của Ultrasurf ? 1 - Cách thức hoạt động của Ultrasurf TL: Để có thể vượt qua các rào cản mà các nhà mạng tạo ra khi truy cập vào Facebook có thể xử dụng một proxy server làm nhiệm vụ trung gian kết nối giữa máy chủ Facebook và máy tính của ta. Việc kết nối đến proxy không dễ dàng đối với những người dùng phổ thông. Để tiện cho việc kết nối đến proxy cho trình duyệt, người ta nghĩ ra ý tưởng tạo ra một tiện ích cho việc này và đặt tên là UltraSurf. Mỗi khi khởi động UltraSurf nó sẽ mở cổng 9666 trên máy tính của bạn. Lúc này mọi gói tin mà trình duyệt của bạn nhận và gửi sẽ đều chạy qua cổng này. UltraSurf sau đó sẽ chuyển tiếp những gói tin từ trình duyệt của bạn gửi cho proxy server thực sự của nó (nằm ở bên Mỹ) và ngược lại nhận những gói tin do proxy server gửi lại cho trình duyệt của bạn. Mình diễn đạt hơi lủng củng bạn có thể tìm hiểu thêm nguyên tắc làm việc của proxy để hiểu thêm. 2 - Tại sao khi sử dụng ultrasurf thì tốc độ truy cập bị giảm (tải video, web page rất chậm , download cũng thế) . TL: Bởi vì khi sử dụng UltraSurf toàn bộ dữ liệu bạn nhận được từ Facebook lúc này sẽ phải chạy qua proxy server của UltraSurf (đặt ở Mỹ thì phải) rồi mới về tới máy bạn thay vì truyền trực tiếp từ máy chủ Facebook đến máy tính của bạn như cách truyền thống. Dữ liệu phải đi đường vòng nên đương nhiên là chậm hơn rồi. 3 - Nhà mạng đã sử dụng gì để chặn các truy câp đến facebook Nhà mạng (ISP) đã sử dụng rất nhiều cách để chặn truy cập đến Facebook bạn ạ.
  • Làm sai lệch việc phân giải tên miền facebook.com và *.facebook.com thành IP => dùng Google Public DNS có thể giải quyết được Chặn luôn mọi truy cập đến các IP của Facebook => đã được giải quyết bằng cách dựng một con proxy làm trung gian kết nối đến máy chủ Facebook và cung cấp file hosts cho ai muốn vào Chặn luôn cả IP của máy chủ trung gian kết nối tới Facebook => buộc phải xài các phần mềm proxy khác như Hotspot Shield, UltraSurf.
]]> /hvaonline/posts/preList/40937/252691.html#252691 /hvaonline/posts/preList/40937/252691.html#252691 GMT Vấn đề monitoring HTTP request /hvaonline/posts/preList/41017/252686.html#252686 /hvaonline/posts/preList/41017/252686.html#252686 GMT Vấn đề monitoring HTTP request /hvaonline/posts/preList/41017/252671.html#252671 /hvaonline/posts/preList/41017/252671.html#252671 GMT Oxford English for Information Technology Code:
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Audio: Code:
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Password: Code:
lehoang267
]]> /hvaonline/posts/preList/200/216341.html#216341 /hvaonline/posts/preList/200/216341.html#216341 GMT Certified Ethical Hacker v6 Study Guide Certified Ethical Hacker v6 Study Guide Cover:
Book Info On Amazon: Code:
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lehoang267
Accompanying CD-ROM: Code:
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]]> /hvaonline/posts/preList/34771/213510.html#213510 /hvaonline/posts/preList/34771/213510.html#213510 GMT Building Scalable Web Sites Code:
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Password to unzip: lehoang267]]> /hvaonline/posts/preList/6076/213240.html#213240 /hvaonline/posts/preList/6076/213240.html#213240 GMT Building Scalable Web Sites http://www.mediafire.com/?myjzjdtdwmw Password: lehoang267]]> /hvaonline/posts/preList/6076/213239.html#213239 /hvaonline/posts/preList/6076/213239.html#213239 GMT Học cách hacking từ cơ bản đến nâng cao /hvaonline/posts/preList/33323/205449.html#205449 /hvaonline/posts/preList/33323/205449.html#205449 GMT Tomcat: The Definitive Guide Second Edition Code:
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]]> /hvaonline/posts/preList/18225/203698.html#203698 /hvaonline/posts/preList/18225/203698.html#203698 GMT Linux System Administration Linux System Administration Solve Real-life Linux Problems Quickly By Tom Adelstein, Bill Lubanovic Publisher: O'Reilly Media Released: March 2007 Pages: 304
Description For experienced system administrators looking to acquire Linux skills, and seasoned Linux users facing a new challenge, this book offers practical knowledge for managing a complete range of Linux systems and servers. It summarizes the steps you need to build everything from standalone SOHO hubs, web servers, and LAN servers to load balanced clusters and servers consolidated through virtualization. You'll also learn to back up data and create shell scripts. Full Description If you're an experienced system administrator looking to acquire Linux skills, or a seasoned Linux user facing a new challenge, Linux System Administration offers practical knowledge for managing a complete range of Linux systems and servers. The book summarizes the steps you need to build everything from standalone SOHO hubs, web servers, and LAN servers to load-balanced clusters and servers consolidated through virtualization. Along the way, you'll learn about all of the tools you need to set up and maintain these working environments. Linux is now a standard corporate platform with users numbering in the hundreds of millions, and there is a definite shortage of talented administrators. Linux System Administration is ideal as an introduction to Linux for Unix veterans, MCSEs, and mainframe administrators, and as an advanced (and refresher) guide for existing Linux administrators who will want to jump into the middle of the book. Inside, you'll learn how to: * Set up a stand-alone Linux server * Install, configure, maintain, and troubleshoot a DNS server using BIND * Build an Internet server to manage sites, perform email and file transfers, and more * Set up an email service for a small-to-medium-sized site, complete with authentication * Install and configure Apache, PHP, and MySQL on a web server built from scratch * Combine computers into a load-balanced Apache web server cluster based on the free Linux Virtual Server * Set up local network services from distributed file systems to DHCP services, gateway services, print services, user management and more * Use Linux virtualization with Xen or VMWare to run multiple kernels on one piece of hardware; manage each kernel's access to processor time, devices, and memory * Create shell scripts and adapt them for your own needs * Back up and restore data with rsync, tar, cdrecord, Amanda, and MySQL tools Linux System Administration is not only knowledgeable and practical, but convenient. The ingredients for this book had been scattered throughout mailing lists, forums, and discussion groups, as well as books, periodicals, and the experiences of colleagues. Everything is now in one handy guide. In the course of their research, the authors also solved many problems whose solutions were completely undocumented. They now pass their lessons on to you. Publisher's url: Code:
http://oreilly.com/catalog/9780596009526
Download: Code:
http://www.mediafire.com/?mqmhmcndjvt
]]> /hvaonline/posts/preList/33016/203384.html#203384 /hvaonline/posts/preList/33016/203384.html#203384 GMT O'Reilly - Learning the vi and Vim Editors 7th Edition (Jul 2008) Code:
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]]> /hvaonline/posts/preList/27071/203383.html#203383 /hvaonline/posts/preList/27071/203383.html#203383 GMT Linux For Dummies, 9th Edition Linux For Dummies, 9th Edition Richard Blum ISBN: 978-0-470-46701-5 Paperback 456 pages August 2009 US $34.99
One of the fastest ways to learn Linux is with this perennial favorite Eight previous top-selling editions of Linux For Dummies can't be wrong. If you've been wanting to migrate to Linux, this book is the best way to get there. Written in easy-to-follow, everyday terms, Linux For Dummies 9th Edition gets you started by concentrating on two distributions of Linux that beginners love: the Ubuntu LiveCD distribution and the gOS Linux distribution, which comes pre-installed on Everex computers. The book also covers the full Fedora distribution. * Linux is an open-source operating system and a low-cost or free alternative to Microsoft Windows; of numerous distributions of Linux, this book covers Ubuntu Linux, Fedora Core Linux, and gOS Linux, and includes them on the DVD. * Install new open source software via Synaptic or RPM package managers * Use free software to browse the Web, listen to music, read e-mail, edit photos, and even run Windows in a virtualized environment * Get acquainted with the Linux command line If you want to get a solid foundation in Linux, this popular, accessible book is for you. Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file. Publisher's Page: Code:
http://as.dummies.com/WileyCDA/store/product/Linux-For-Dummies-9th-Edition.productCd-0470467010,navId-322464.html
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]]> /hvaonline/posts/preList/33015/203382.html#203382 /hvaonline/posts/preList/33015/203382.html#203382 GMT Linux in a Nutshell, Sixth Edition
Description Everything you need to know about Linux is right in this book. The latest edition of this popular reference offers a tighter focus on Linux system essentials, as well as more coverage of new capabilities such as wireless network management, DVD recording, and revision control with git. Linux in a Nutshell, Sixth Edition thoroughly covers programming and administration tools, editors, and the shell, and highlights the most important options for using the vast number of Linux commands. Full Description Everything you need to know about Linux is in this book. Written by Stephen Figgins, Ellen Siever, Robert Love, and Arnold Robbins -- people with years of active participation in the Linux community -- Linux in a Nutshell, Sixth Edition, thoroughly covers programming tools, system and network administration tools, the shell, editors, and LILO and GRUB boot loaders. This updated edition offers a tighter focus on Linux system essentials, as well as more coverage of new capabilities such as virtualization, wireless network management, and revision control with git. It also highlights the most important options for using the vast number of Linux commands. You'll find many helpful new tips and techniques in this reference, whether you're new to this operating system or have been using it for years. * Get the Linux commands for system administration and network management * Use hundreds of the most important shell commands available on Linux * Understand the Bash shell command-line interpreter * Search and process text with regular expressions * Manage your servers via virtualization with Xen and VMware * Use the Emacs text editor and development environment, as well as the vi, ex, and vim text-manipulation tools * Process text files with the sed editor and the gawk programming language * Manage source code with Subversion and git url: Code:
http://oreilly.com/catalog/9780596154493
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]]> /hvaonline/posts/preList/33014/203380.html#203380 /hvaonline/posts/preList/33014/203380.html#203380 GMT Running Linux, Fifth Edition Running Linux, Fifth Edition A Distribution-Neutral Guide for Servers and Desktops By Matthias Kalle Dalheimer, Matt Welsh Publisher: O'Reilly Media Released: December 2005 Pages: 976
Description The fifth edition of Running Linux is greatly expanded, reflecting the maturity of the operating system and the teeming wealth of software available for it. Hot consumer topics such as audio and video playback applications, groupware functionality, and spam filtering are covered, along with the basics in configuration and management that always made the book popular. Full Description You may be contemplating your first Linux installation. Or you may have been using Linux for years and need to know more about adding a network printer or setting up an FTP server. Running Linux, now in its fifth edition, is the book you'll want on hand in either case. Widely recognized in the Linux community as the ultimate getting-started and problem-solving book, it answers the questions and tackles the configuration issues that frequently plague users, but are seldom addressed in other books. This fifth edition of Running Linux is greatly expanded, reflecting the maturity of the operating system and the teeming wealth of software available for it. Hot consumer topics such as audio and video playback applications, groupware functionality, and spam filtering are covered, along with the basics in configuration and management that always have made the book popular. Running Linux covers basic communications such as mail, web surfing, and instant messaging, but also delves into the subtleties of network configuration--including dial-up, ADSL, and cable modems--in case you need to set up your network manually. The book can make you proficient on office suites and personal productivity applications--and also tells you what programming tools are available if you're interested in contributing to these applications. Other new topics in the fifth edition include encrypted email and filesystems, advanced shell techniques, and remote login applications. Classic discussions on booting, package management, kernel recompilation, and X configuration have also been updated. The authors of Running Linux have anticipated problem areas, selected stable and popular solutions, and provided clear instructions to ensure that you'll have a satisfying experience using Linux. The discussion is direct and complete enough to guide novice users, while still providing the additional information experienced users will need to progress in their mastery of Linux. Whether you're using Linux on a home workstation or maintaining a network server, Running Linux will provide expert advice just when you need it. url: Code:
http://oreilly.com/catalog/9780596007607
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]]> /hvaonline/posts/preList/33013/203379.html#203379 /hvaonline/posts/preList/33013/203379.html#203379 GMT Learning the bash Shell, Third Edition Learning the bash Shell, Third Edition Unix Shell Programming By Cameron Newham Publisher: O'Reilly Media Released: March 2005 Pages: 360
Description This refreshed edition serves as the most valuable guide yet to the bash shell. It's full of practical examples of shell commands and programs guaranteed to make everyday use of Linux that much easier. Includes information on key bindings, command line editing and processing, integrated programming features, signal handling, and much more! Full Description O'Reilly's bestselling book on Linux's bash shell is at it again. Now that Linux is an established player both as a server and on the desktop Learning the bash Shell has been updated and refreshed to account for all the latest changes. Indeed, this third edition serves as the most valuable guide yet to the bash shell. As any good programmer knows, the first thing users of the Linux operating system come face to face with is the shell the UNIX term for a user interface to the system. In other words, it's what lets you communicate with the computer via the keyboard and display. Mastering the bash shell might sound fairly simple but it isn't. In truth, there are many complexities that need careful explanation, which is just what Learning the bash Shell provides. If you are new to shell programming, the book provides an excellent introduction, covering everything from the most basic to the most advanced features. And if you've been writing shell scripts for years, it offers a great way to find out what the new shell offers. Learning the bash Shell is also full of practical examples of shell commands and programs that will make everyday use of Linux that much easier. With this book, programmers will learn: * How to install bash as your login shell * The basics of interactive shell use, including UNIX file and directory structures, standard I/O, and background jobs * Command line editing, history substitution, and key bindings * How to customize your shell environment without programming * The nuts and bolts of basic shell programming, flow control structures, command-line options and typed variables * Process handling, from job control to processes, coroutines and subshells * Debugging techniques, such as trace and verbose modes * Techniques for implementing system-wide shell customization and features related to system security url: Code:
http://oreilly.com/catalog/9780596009656
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]]> /hvaonline/posts/preList/33012/203378.html#203378 /hvaonline/posts/preList/33012/203378.html#203378 GMT Learning Red Hat Enterprise Linux & Fedora, Fourth Edition Learning Red Hat Enterprise Linux & Fedora, Fourth Edition An Introduction to a Popular and Widespread Version of Linux By Bill McCarty Publisher: O'Reilly Media Released: April 2004 Pages: 352
Description New in this edition are installation instructions and help with package updating for Red Hat Enterprise Linux and Fedora. Information on the GRUB bootloader, and the CUPS printer system, as well as the Publisher's Edition of Fedora are also included. Publisher's Page: Code:
http://oreilly.com/catalog/9780596005894
Download: Code:
http://www.mediafire.com/?dzy2jmajazn
]]> /hvaonline/posts/preList/33011/203377.html#203377 /hvaonline/posts/preList/33011/203377.html#203377 GMT The Complete FreeBSD, Fourth Edition The Complete FreeBSD, Fourth Edition Documentation from the Source By Greg Lehey Publisher: O'Reilly Media Released: April 2003 Pages: 720 Description The 4th edition, covering version 5 of FreeBSD, is now available through O'Reilly Community Press. It is an eminently practical guidebook that explains not only how to get a computer up and running with the FreeBSD operating system, but also how to turn it into a highly functional and secure server that can host large numbers of users and disks, support remote access, and provide web service, mail service, and other key parts of the Internet infrastructure. Author's Page: Code:
http://www.lemis.com/grog/Documentation/CFBSD/
Publisher's Page: Code:
http://oreilly.com/catalog/9780596005160
Download: Code:
http://w3.lemis.com/grog/Documentation/CFBSD/book.pdf.gz
]]> /hvaonline/posts/preList/32908/202813.html#202813 /hvaonline/posts/preList/32908/202813.html#202813 GMT Building a Server with FreeBSD 7 Code:
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]]> /hvaonline/posts/preList/21818/202811.html#202811 /hvaonline/posts/preList/21818/202811.html#202811 GMT Understanding the Linux Kernel, Third Edition Understanding the Linux Kernel, Third Edition Description This new edition covers Version 2.6 of the Linux kernel, which has seen significant changes to nearly every kernel subsystem, particularly in the areas of memory management and block devices. Understanding the Linux Kernel provides a guided tour of the code that forms the core of all Linux operating systems. Beyond the functioning of the code, the book explains the theoretical underpinnings for why Linux, and many other operating systems, do things the way they do. Product Details Title: Understanding the Linux Kernel, Third Edition By: Daniel P. Bovet, Marco Cesati Publisher: O'Reilly Media Formats: * Print * Ebook * Safari Books Online Print Release: November 2005 Ebook Release: December 2008 Pages: 944 Print ISBN: 978-0-596-00565-8 | ISBN 10: 0-596-00565-2 Ebook ISBN: 978-0-596-15880-4 | ISBN 10: 0-596-15880-7 Download: http://www.mediafire.com/?oyxm2zzxyjg]]> /hvaonline/posts/preList/32907/202810.html#202810 /hvaonline/posts/preList/32907/202810.html#202810 GMT Linux: The Complete Reference Sixth Edition (Paperback) http://www.mediafire.com/?0zqbmyyd1tz]]> /hvaonline/posts/preList/18619/202809.html#202809 /hvaonline/posts/preList/18619/202809.html#202809 GMT Linux iptables Pocket Reference 2004 http://oreilly.com/catalog/9780596005696/ Description Linux iptables Pocket Reference organizes the subtle netfilter syntax for quick and easy lookup, and helps administrators remember all the values they need to enter to assure strict security. The book divides the listings of all iptables options into those that are suitable for firewalling, accounting, and Network Address Translation (NAT). Our unique quick reference format is ideal for Linux administrators who already have a firewall in place, but need to be prepared for frequent changes in their environment. Download: http://www.mediafire.com/?zvuouazj5zl Product Details Title: Linux iptables Pocket Reference By: Gregor N. Purdy Publisher: O'Reilly Media Formats: * Print * Ebook * Safari Books Online Print Release: August 2004 Ebook Release: June 2009 Pages: 96 Print ISBN: 978-0-596-00569-6 | ISBN 10: 0-596-00569-5 Ebook ISBN: 978-0-596-55640-2 | ISBN 10: 0-596-55640-3 ]]> /hvaonline/posts/preList/32906/202808.html#202808 /hvaonline/posts/preList/32906/202808.html#202808 GMT Làm thế nào để hạn chế tốc độ upload? /hvaonline/posts/preList/32886/202739.html#202739 /hvaonline/posts/preList/32886/202739.html#202739 GMT Làm thế nào để hạn chế tốc độ upload? /hvaonline/posts/preList/32886/202710.html#202710 /hvaonline/posts/preList/32886/202710.html#202710 GMT Yêu cầu sách, reupload sách vui lòng đặt câu hỏi ở đây /hvaonline/posts/preList/19573/200381.html#200381 /hvaonline/posts/preList/19573/200381.html#200381 GMT