computer network internet security phần 2 ppt
computer network internet security phần 2 ppt
... storm, although the computer system may be functional. 2. 2.4.4 MALICIOUS HACKERS Hackers, sometimes called crackers, are a real and present danger to most organizational computer systems linked by networks. ... internal network is trivial. 2. 4.1 Protecting Services 2. 4.1.0 NAME SERVERS (DNS AND NIS(+)) The Internet uses the Domain Name System (DNS) to perform address resolution...
Ngày tải lên: 14/08/2014, 18:20
computer network internet security phần 1 pptx
... network such as the Internet. iviv 2. 2.4 Common Threats 24 2. 2.4.0 Errors and Omissions 24 2. 2.4.1 Fraud and Theft 25 2. 2.4 .2 Disgruntled Employees 25 2. 2.4.3 Physical and Infrastructure 25 2. 2.4.4 ... manner. ixix 9 .2. 3 Domains 21 7 9 .2. 4 NT Registry 21 7 9 .2. 5 C2 Security 21 8 9.3 NT SECURITY MODEL 21 9 9.3.0 LSA: Local Security Authority 21 9 9.3.1 S...
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computer network internet security phần 3 pptx
... 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 specific implications. ... retrieve the computer. 2. 13.3 Strategies to Minimize Computer Theft Computer theft cannot be eliminated, but can be reduced by implementing a few simple strategies. 2. 13.3.0 APPO...
Ngày tải lên: 14/08/2014, 18:20
computer network internet security phần 5 ppt
... 19 528 Fragmentation Flags: %010 Do Not Fragment Fragment Offset: 0 Time To Live: 25 5 IP Type: 0x06 TCP Header Checksum: 0xdde2 Source IP Address: 1 92. 246 .25 4.153 Dest. IP Address: 129 .170.16.79 ... 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 AND MAIL RE...
Ngày tải lên: 14/08/2014, 18:20
computer network internet security phần 9 ppt
... firewall concepts, network security concepts, advanced network security technologies and security management must be undertaken. Failure to provide adequate 26 926 9 Appendix H: Network Terms Glossary AAL ... Ethernet/8 02. 3 frame that does not end on a “byte- boundary.” 26 226 2 Appendix E: Types of Attacks ATTACK NAME SYMPTOMS DESCRIPTION NOTES Boink (similar to Bonk, Teardro...
Ngày tải lên: 14/08/2014, 18:20
computer network internet security phần 4 pdf
... threat 8989 Section References 2. 1 Fraser, B. ed. RFC 21 96. Site Security Handbook. Network Working Group, September 1997. Chapter 2. 2. 2 Guideline for the Analysis Local Area Network Security. , Federal ... 21 9 -23 0. Wood, Charles Cresson. "Designing Corporate Information Security Policies." DATAPRO Reports on Information Security, April 19 92. 2. 4 Guideline f...
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computer network internet security phần 6 pps
... total network solution - they remain a single level in security management of network environments. True, functional network security must be a layered approach and use different types of security ... or server. Adding server-based network security firewall software allows a final layer of network security prior to reaching the server operating environment: Internet Rout...
Ngày tải lên: 14/08/2014, 18:20
computer network internet security phần 7 ppsx
... this new threat. 20 220 2 8.0 Virtual Private Networks: Introduction 8.1 Making Sense of Virtual Private Networks The VPN market is on the verge of explosive growth. A virtual private network (VPN) broadly ... Purdue Technical Report CSD-TR- 823 , Nov 28 , 1988. 20 920 9 Because SOCKS v5 and SSL operate at the session layer, they have the unique ability to interoperate on top of IPv4, IP...
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computer network internet security phần 8 docx
... 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 ... command the “lastcomm” command the “/var/log/syslog” file the “netstat” command 22 022 0 Figure 2: NT Security Model 9.3.1 SAM: Security Account Manager The SAM manages a database...
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computer network internet security phần 10 pot
... Greek symbol, 3 123 12 V. 42 bis ITU-T standard that enhances V. 42 by incorporating the British Telecom Lempel Ziv data compression technique to V. 42 error correction. Most V. 32, V. 32 bis, and V.34 ... allows systems or network manager to restrict access to components on a network. Five generally accepted types of firewalls are 28 228 2 DTE-to-DCE Rate The speed at which a compu...
Ngày tải lên: 14/08/2014, 18:20