computer network internet security phần 5 ppt

... Command: 0x504 153 53 (PASS) Password Password: rmasey @network- 1 72 6d 61 73 65 79 40 6e 65 74 77 6f 72 6b 2d 31 .com 2e 63 6f 6d Newline Sequence: 0x0d0a Frame Check Sequence: 0x06c1fd4a 5. 5.3 .5 DNS ... all software types that are known to present security threats to a network (such as Active X and Java) to better tighten the security of the network. 5. 5.4.8 Restoration...

Ngày tải lên: 14/08/2014, 18:20

... INTRODUCTION 130 5. 2 FIREWALL SECURITY AND CONCEPTS 131 5. 2.0 Firewall Components 131 5. 2.0.0 Network Policy 131 5. 2.0.1 Service Access Policy 131 5. 2.0.2 Firewall Design Policy 132 55 the communicating ... Banner Carefully 54 2.8 .5 Dial-out Authentication 54 2.8.6 Make Your Modem Programming as "Bullet-proof" as Possible 54 2.9 DIAL UP SECURITY ISSUES 55...

Ngày tải lên: 14/08/2014, 18:20

... the event of a security breach. 2 .5 Auditing This section covers the procedures for collecting data generated by network activity, which may be useful in analyzing the security of a network and ... responding to security incidents. 2 .5. 1 What to Collect Audit data should include any attempt to achieve a different security level by any person, process, or other entity in the n...

Ngày tải lên: 14/08/2014, 18:20

... may periodically leave the network (e.g., by crashing, or by being disconnected) and then rejoin; 4. Network configuration aspects that can impact the security of the network system; (For example, ... demonstrate that the tests adequately cover the network security policy. 2. 15. 2 Summary The application of C2 standards in both the standalone and network environment has specifi...

Ngày tải lên: 14/08/2014, 18:20

... firewall concepts, network security concepts, advanced network security technologies and security management must be undertaken. Failure to provide adequate 269269 Appendix H: Network Terms Glossary AAL ... files. Computer Emergency Response Team (CERT) A formal organization operated by the Software Engineering Institute at Carnegie Mellon University and dedicated to addressing...

Ngày tải lên: 14/08/2014, 18:20

... vulnerabilities. Chapter 7 177 95_ hack_prod_07 7/13/00 9:03 AM Page 177 tions in use today that suffer buffer overflows. They are hard to detect and very devastating to computer security. Not only can ... L0phtCrack, as well as the number of total users. Cryptography • Chapter 6 1 75 www.syngress.com 95_ hack_prod_06 7/13/00 4:21 PM Page 1 75 Perl Perl has a “taint” mode, which is ena...

Ngày tải lên: 14/08/2014, 04:21

... "Establishing a System Security Policy." Foiling the System Breakers. New York, NY:McGraw-Hill, 1986. pp. 57 - 95. Menkus, B. "Concerns in Computer Security. " Computers and Security. 11(3), ... Proceedings of the 15th National Computer Security Conference. Baltimore, MD, Vol. 1, October 15, 1992. pp.244- 251 . Fites, P., and M. Kratz. "Policy Development....

Ngày tải lên: 14/08/2014, 18:20

... and time with a digital document in a cryptographically strong manner 155 155 5. 5 .5. 2 Are Dedicated Firewalls A Good Idea? Security wise, an emphatic yes - for the reasons previously mentioned ... significant asset are greatly improved. 5. 5 .5. 4 Improving Network Security in Layers - From Inside to Outside Another improvement in the layered network security approach is that...

Ngày tải lên: 14/08/2014, 18:20

... Usage; National Bureau of Standards, May, 19 85. MACAFEE89 McAfee, John; The Virus Cure; Datamation, Feb 15, 1989. NBS120 NBS Special Publication 50 0-120; Security of Personal Computer Systems: A Management ... Usage; National Bureau of Standards, May, 19 85. MACAFEE89 McAfee, John; The Virus Cure; Datamation, Feb 15, 1989. NBS120 NBS Special Publication 50 0-120; Security of Perso...

Ngày tải lên: 14/08/2014, 18:20

... hierarchy. 9.2 .5 C2 Security Requirements for a C2 compliant system are defined by the National Computer Security Center (NCSC) of the United States Department of Defense, in the Trusted Computer System ... correct authorization. NT Security Subsystem The Windows NT security model is based on the following components: Local Security Authority (LSA) Security Account Manager (...

Ngày tải lên: 14/08/2014, 18:20