Tài liệu Intrusion Detection Patterns and Analysis ppt

... more, and also consider the architecture for intrusion detection. 12 IDIC - SANS GIAC LevelTwo ©2000, 2001 12 Firewalls and Intrusion Detection • Firewalls perturb traffic – disrupt 3-way handshake • ... LevelTwo ©2000, 2001 1 Intrusion Detection Patterns and Analysis Stephen Northcutt Version 4.0 You have learned a lot already, our job is to build on this foundation...

Ngày tải lên: 24/01/2014, 10:20

... low and slow and covert channels. Covert channels involves hiding information in packet headers, or in what is called null padding, and can be a handy way to synchronize with Trojans. Low and ... with web and mail servers. TCP fingerprinting or stack analysis is becoming more prevalent. Here we show a trace from a desktop computer surfing the web and the web server turns aroun...

Ngày tải lên: 24/01/2014, 09:20

... ©2000, 2001 1 Intrusion Detection Patterns 2 Network Vulnerability Scanning, Network Mapping Hello, and welcome to the second section in a series that examine intrusion detection patterns that ... three commands: uname –a, id and w, which could reveal operating system information, user and group IDs, and other information. The hex dump in this slide shows the same three...

Ngày tải lên: 24/01/2014, 10:20

... contain? A. Organization ID and WatchDogInterval. B. Organization ID and Organization name. C. Organization ID and TimeOutAlarmLevel. D. Organization name and WatchDogInterval. Answer: ... firewall to allow Telnet traffic from the sensors command and control interface to the router and UDP port 45000 traffic through the firewall and the routers to the director. Con...

Ngày tải lên: 10/12/2013, 17:15

... Firewall Log Review and Analysis After the decision has been made to log events from your firewall, the next step is determining what you should be looking for in the logs and how you should ... Command-line removal As you can see, reasons such as "Unauth Deny" or "Flow closed by inspection" can be indicators of malicious traffic and warrant more concern an...

Ngày tải lên: 21/01/2014, 02:20

... with: this connection” 1 IDIC – SANS GIAC LevelTwo ©2000, 2001 1 Intrusion Detection Patterns Patterns Please send patterns to intrusion@ sans.org Those who do not know history are doomed to repeat ... pattern. Common Errors Detect by Andy Johnston, GCIA; analysis by Julie Lefebvre, GCIA. Andy is a co-author of the Intrusion Signatures and Analysis book; here, one of his det...

Ngày tải lên: 24/01/2014, 10:20

... Intrusion Detection and Prevention Because network traffic must cross the firewall to reach the end systems, ... appropriate. For many years, firewall vendors such as Cisco Systems, Inc. and Check Point have been including intrusion detection system (IDS) capabilities to their firewalls. These devices were ... through a port on a switch, and the interface that connects to t...

Ngày tải lên: 26/01/2014, 04:20

... megaquiz/command Adding megaquiz/command/Command.php Adding megaquiz/command/FeedbackCommand.php Adding megaquiz/command/CommandContext.php Adding megaquiz/command/LoginCommand.php Adding ... the CommandContext object and emphasize the fact that it is commonly used in the Command::execute() method: /** * Encapsulates data for passing to, from and between Commands. * Commands re...

Ngày tải lên: 14/12/2013, 17:15

... collisions and, 149 problems caused by, 149 using correctly, 109 globalKey(), 290 good mail(), 319 groupadd command, 363 Gutmans, Andi, 5, 11 ■ H handleLogin(), 203 handleMatch(), 476, 485 handleMethod(), ... rather than pass-by-value, 12–13 PEAR and object-oriented programming, 13 PHP 3 and, 11 PHP 4 and, 12 PHP 5 and, 13 PHP 5.3 and namespaces, 14 PHP 6 and, 14 pr...

Ngày tải lên: 14/12/2013, 17:15