tailieunhanh - Lecture Professional Practices in IT: Lecture 18 - Saqib Iqbal

Lecture 18 - Hacking (continued). After studying this chapter you will be able to understand: Why do people hack? The psycology of hackers, types of hacking, password hacking, IP address, port, hacking tools, scanners, telnet, FTP. | Lecture 18 HACKING (CONTINUED) WHY DO PEOPLE HACK ? JUST FOR FUN. SHOW OF THEIR KNOWLEDGE. HACK OTHER SYSTEM SECRETLY. DESTROY ENEMY’S COMPUTER NETWORK DURING THE WAR. FOR PROFIT PEOPLE PAYS A CRACKER. CRACK FOR SAKE OF CURIOCITY. THE PSYCOLOGY OF HACKERS ALL INFORMATION SHOULD BE FREE. ACCESS TO COMPUTER SHOULD BE UNLIMITED AND FREE. IT CAN CHANGE LIFE FOR BETTER. IT CAN CREATE BEAUTY ON COMPUTER. TYPES OF HACKING THERE ARE MANY TYPES OF HACKING LIKE PASSWORD HACKING SOFTWARE HACKING NET HACKING PASSWORD HACKING TWO TYPES BRUTE FORCE IN THAT CASE HACKERS TRY OUT ALL THE COMBINATION OF ALL KEYBOARD LETTERS .IT HAS GRATER SUCCESS BUT IT TAKES LONG TIME DICTIONARY BASED IN THAT THEY ARE USE PREDEFINE IS UNSUCCESSFUL METHOD SOFTWARE HACKING IN THAT HACKERS CHANGES THE LOOK & EXCUTION WAY OF THAT SOFTWARE CHANG THE DEMO VERSION INTO FULL VERSION BY DECODING THE SOURCE CODE IP ADDRESS IP ADDRESS IS THE ADDRESS OF YOUR COMPUTER IN THE INTERNET IT IS UNIQ LIKE PORT IT IS NOT PHYSICAL PORT BUT IT IS LOGICAL PORT IN YOUR COMPUTER IT IS JUST LIKE HOLE ONTO THE HACKER CAN ENTER THERE ARE THOUSANDS OF PORTS INTO COMPUTER THE PETICULAR SERVICE IS RUNNING ON PERTICULAR PORT LIKE PORT 21 : FTP PORT 23 : TELNET PORT 80 : HTTP PORT 25 : MAIL HACKING TOOLS THERE ARE MANY TOOLS ARE AVILABLE SCANNERS TELNET FTP LAN WATCH SCANNERS IT IS NOT A PHOTO SCANNER SCANNER IS PROGRAM THAT AUTOMATICALLY DETECTS SECURITY WEAKNESS IN REMOTE HOST PORT SCANNERS ARE USED IN HACKING PORT SCANNER CAN GIVE THE WHOLE LIST OF OPEN PORT ON THAT SYSTEM AND WHICH SERVICE IS RUNNING ON THAT IT CAN USE ALMOST ALL OPERATING SYSTEM EX. SATAN,NMAP TELNET TELNET IS ULTIMATE HACKING TOOL IT IS TERMINAL EMULATION PROGRAM THAT ALLOWS US TO CONNECT TO REMOTE SYSTEM YOU HAVE TO FOLLOW THIS STEP TO USE TELNET C:\WINDOWS\TELNET [IP ADDRESS] PORT FTP FTP IS ONE TYPE OF PROTOCOL BUT SOME TIME IT IS USED AS HACKING TOOL PORT 21 FOR THE FTP FOR CONNECTING FTP WE NEED SOME FTP S/W . | Lecture 18 HACKING (CONTINUED) WHY DO PEOPLE HACK ? JUST FOR FUN. SHOW OF THEIR KNOWLEDGE. HACK OTHER SYSTEM SECRETLY. DESTROY ENEMY’S COMPUTER NETWORK DURING THE WAR. FOR PROFIT PEOPLE PAYS A CRACKER. CRACK FOR SAKE OF CURIOCITY. THE PSYCOLOGY OF HACKERS ALL INFORMATION SHOULD BE FREE. ACCESS TO COMPUTER SHOULD BE UNLIMITED AND FREE. IT CAN CHANGE LIFE FOR BETTER. IT CAN CREATE BEAUTY ON COMPUTER. TYPES OF HACKING THERE ARE MANY TYPES OF HACKING LIKE PASSWORD HACKING SOFTWARE HACKING NET HACKING PASSWORD HACKING TWO TYPES BRUTE FORCE IN THAT CASE HACKERS TRY OUT ALL THE COMBINATION OF ALL KEYBOARD LETTERS .IT HAS GRATER SUCCESS BUT IT TAKES LONG TIME DICTIONARY BASED IN THAT THEY ARE USE PREDEFINE IS UNSUCCESSFUL METHOD SOFTWARE HACKING IN THAT HACKERS CHANGES THE LOOK & EXCUTION WAY OF THAT SOFTWARE CHANG THE DEMO VERSION INTO FULL VERSION BY DECODING THE SOURCE CODE IP ADDRESS IP ADDRESS IS THE ADDRESS OF YOUR COMPUTER IN THE INTERNET IT IS UNIQ LIKE PORT