the big nerd ranch guide

... phòng cách tự động Khoảng ánh sáng cần ổn định đựơc nhập vào theo yêu cầu sử dụng, hệ thống điều khiển đo thay đổi độ sáng phòng theo yêu càu cấu rèm cửa búng ốn II S tng quỏt 1.Sơ đồ khối : ... A/D P/C/PC Mức chuẩn So sánh Cơ cấu Mạch điều Phát chấp hành khiển Từ sơ đồ khối tổng quát, dựa theo yêu cầu toán ta có sơ đồsaikhối cụ thể mạch đo điều khiển ánh sáng là: ánh sáng MC SENSOR Biến ... b B chuyn đổi tương tự/số Bộ chuyển đổi tương tự – số sử dụng hệ thống ADC 0809 Đây IC chế tạo theo công nghệ CMOS gồm chuyển đổi tươngtự - số bit, chọn kênh logic điều khiển tương thích.Bộ chuyển

Ngày tải lên: 01/08/2013, 10:18

... somewhere on the network, they did the work on the server, you got the results, and you were done. Then with the advent of the web, we started seeing the use of CGI programs to do the work. However, ... Generally, the strongest algorithm that the two programs support will be selected. The client and the server will then exchange encryption keys. These are the codes that will enable the two to ... language the server will understand, send it off to the server over the network, and waits for the reply. When the server sends the reply, the browser will format it and display it for the user.

Ngày tải lên: 10/12/2013, 14:16

... the old days, before the. .. be In either case, the user then has a response which he then sends off to the server The server, meanwhile, has not been idly standing by waiting for the ... the challenge When the response comes back from the user, the server will compare the user’s response to the one it generated and is expecting If the two match, the user is authenticated ... clients The third component is the Ticket Granting... systems The server then sends the challenge to the user The user then must do something with that challenge in order to obtain the

Ngày tải lên: 10/12/2013, 14:16

... Detection - The Big Picture – SANS GIAC ©2000 11 The telnetd and the web demon are “real” They are compiled C code They simply simulate the services This... anything about the attack, ... [...]... several of them would end up being arrested In the next section of the course, we will discuss Firewalls These are not only the primary defense tool, they are one of the most important ... open, or the SYN flag is set. The system responds with “login”. If the answer is either guest or root, the system moves to State 1. In State 1 it offers “Password” and if the password matches the

Ngày tải lên: 10/12/2013, 14:16

... research. Pull the color ads in your area for the consumer electronic stores such as Circuit City and the like. Check out the computers. What do they all have? 8 Intrusion Detection - The Big Picture ... Detection - The Big Picture – SANS GIAC ©2000, 2001 Intrusion Detection The Big Picture – Part V Stephen Northcutt This page intentionally left blank. 2 Intrusion Detection - The Big Picture ... on the motherboard The idea was to speed up equipment inventory You walk down the hall transmitting a code and the. .. conclusions about how vulnerable a system is until you know the

Ngày tải lên: 10/12/2013, 14:16

... practices) The Three Risk Choices • Accept the risk as is • Mitigate or reduce the risk • Transfer the risk (insurance model) Intrusion Detection - The Big Picture – SANS GIAC ©2000, 2001 Whether or ... Intrusion Detection - The Big Picture – SANS GIAC ©2000, 2001 You will notice that I have never read a slide to you in the entire time together, so please bear with me • Write the security policy ... Detection The Big Picture – Part VI Stephen Northcutt Intrusion Detection - The Big Picture – SANS GIAC ©2000, 2001 This page intentionally left blank Intrusion Detection Roadmap What are the pieces

Ngày tải lên: 10/12/2013, 14:16

... firewalls themselves, which are an amazingly effective perimeter, contribute to the problem. The people protected by the firewall think everything is OK since the firewall stops the attacks and then they ... detailed log file Notice the rule that found the detect is displayed at the top Then summary information about the packet is given The trace begins with the content of the detect RPC (Remote ... hide them if you want your site to communicate with the rest of the world They are also important systems Therefore it makes sense... get the right value While it’s possible to get the

Ngày tải lên: 10/12/2013, 14:16

... traffic. In the slide above, the packet is addressed to TCP port 143, the IMAP service. If the site does not allow IMAP through the firewall, then there will never be a SYN/ACK response, the TCP ... they do The honeypots deployed by Lance illustrate just how effective this is, because the attackers assume no one can monitor them If there were another couple hundred honeypots, then the ... open, or the SYN flag is set. The system responds with “login”. If the answer is either guest or root, the system moves to State 1. In State 1 it offers “Password” and if the password matches the

Ngày tải lên: 10/12/2013, 14:16

... compromise be? Well, once they compromise the box they have the ability to manipulate the addresses associated with the names of the network entities (such as computers) at your site. These names and addresses ... Management: The Big Picture. .. You have spent the day learning about the big picture The real question is, can you explain it to your management? Can you show them how the technologies ... show them the organization was in a measurable degree of risk they will be uncomfortable with that information The more specific and clear that information is, the more they squirm The

Ngày tải lên: 10/12/2013, 14:16

... the old days, before the. .. be In either case, the user then has a response which he then sends off to the server The server, meanwhile, has not been idly standing by waiting for the ... the challenge When the response comes back from the user, the server will compare the user’s response to the one it generated and is expecting If the two match, the user is authenticated ... clients The third component is the Ticket Granting... systems The server then sends the challenge to the user The user then must do something with that challenge in order to obtain the

Ngày tải lên: 10/12/2013, 15:15

... claim Active trust a trust where the trustees have other responsibilities rather than to just let the beneficiaries have the trust's assets when they ask for them Act of bankruptcy an act which, ... cannot pay their debts Normally the court orders that the debts are repaid by instalments and as long as the debtor keeps to the order the creditors cannot anything else to recover their money ... agricultural work The tenant has special rights including, when the tenancy finishes, the right to compensation for improvements to the land If the land has deteriorated the tenant must compensate the landlord

Ngày tải lên: 12/12/2013, 20:21

... p trình hư ng đ i tư ng – GV Nguy n Minh Huy } 11 The Law of The Big Three Dr Guru khuyên: lu t “ba ông l n” L p có thu c tính tr , ph i kèm theo: Hàm h y: thu h i b nh Hàm d ng chép: chép b ... Phương pháp l p trình hư ng đ i tư ng – GV Nguy n Minh Huy void main() { Array a1(5); } The Law of The Big Three V n đ rị r b nh : L p có thu c tính tr Đ i tư ng c a l p b h y, b nh không thu ... Ph i dùng hàm h y đ d n d p!! Phương pháp l p trình hư ng đ i tư ng – GV Nguy n Minh Huy The Law of The Big Three Ví d 1: class Array { private: int m_size; int *m_data; public: Array(int size);

Ngày tải lên: 12/01/2014, 16:57

... do the various components do? • Many IDS web sites never state what the infernal things do! – How do we implement them? • Where do the components fit in the ? ?big picture”? To summarize the ... The Big Picture - SANS GIAC © 2000, 2001 15 Promiscuous mode allows the network interface adapter to collect all the packets, not just the ones... throughout the organization, the ... Detection - The Big Picture - SANS GIAC © 2000, 2001 1 Intrusion Detection The Big Picture – Part II Stephen Northcutt This page intentionally left blank. 2 Intrusion Detection - The Big Picture

Ngày tải lên: 17/01/2014, 08:20

... the detect is displayed at the top. Then summary information about the packet. The trace begins with the content of the detect. RPC attacks like this are part of the Top Ten list (www.sans.org/topten.htm). ... they own you • Worth the time to give connection attempts to these systems an extra look Intrusion Detection - The Big Picture - SANS GIAC © 2000 11 The “goodhost” filters in the ... Detection - The Big Picture - SANS GIAC © 2000 27 The sensor outside the firewall is positioned to detect attacks that originate from the Internet DNS, email and web servers are the target

Ngày tải lên: 17/01/2014, 08:20

... that, while they may mean to save and invest 10% of their salary, by the end of the month they don’t have that much left. They have good intentions, but not enough dis- cipline. There’s a well-worn ... more for the privi- lege of borrowing from them. Many people get caught up in the spiral of credit card debt. Once they rack up a lot of debt, the best they can usually manage is paying the interest. ... lost to the market’s average over the past five years! It’s one of the most damning statistics out there — that mutual funds managed rather expensively by humans do worse, after fees, than the stock...

Ngày tải lên: 19/10/2012, 16:16

... chung về nhà hàng The Big 1 02 II . Vị trí của The Big 1 02 III. Quá trình hình thành và phát triển The Big 1 03 IV. Chức năng và nhiệm vụ The Big 1 03 V. Bộ máy quản lý của The Big 1 04 VI. Những ... hàng the big 1 The big 1 là một biểu tợng của Công ty cổ phần đầu t và phát triển Văn Hiến. Big 1 là một nhà hàng hiện đại, lớn, sang trọng và lịch sự với đầy đủ trang thiết bị hiện đại. Big ... lợi nên nhà hàng The Big 1 đà thu hut đợc rất nhiều các tầng lớp khách. III. Quá trình hình thành và phát triển của the big 1 Sau một thời gian dài đầu t và xây dựng ,nhà hàng Big 1 bắt đầu mở...

Ngày tải lên: 01/08/2013, 10:18

... how they can protect your information. Let them know how important they are in the process, and let them know the consequences of failing to enforce your policies. Give them the tools and the ... information they are told and do not question its validity. The only protection is to try to ensure the authenticity of the person you are talking with. Don’t be afraid to have people authenticate themselves ... to access the Internet from work, so they begin dialing up their ISP from their work computers and creating multiple, unsecured connections from your network to the Internet, making the situation...

Ngày tải lên: 18/10/2013, 18:15

... would contact the operator at the central office and tell them the name of the person they wanted to talk to. The operator would then connect the caller’s plug to the plug of the person being ... model, except the cans are replaced by the phones and the string is replaced by copper wire. Like the can, the telephone picks up the voice of the person making the call. It then transmits ... plan works. Test if the right people are in the right place at the right time, and make sure they have all the resources they need to get the job done. Testing the plan is the only way to ensure...

Ngày tải lên: 22/10/2013, 16:15

... places the “Hello There” inside of it. The Application Layer then sends the packet to the Transport Layer. The Transport Layer takes the packet and adds a header to it. The header has all the information ... purchased, the process goes in reverse. The first floor gives the raw ingredients to the second floor. The second floor checks that all the ingredients are there and then hands them off to the third ... The third floor prepares the various courses by making the soup, tossing the salad, cooking the beef, and baking the pie. Once all this is done they hand the food off to the fourth floor. The...

Ngày tải lên: 22/10/2013, 16:15