access control and security issues

... Trang 1Module 05 SecurityChapter 17 IP Access Control List Security Trang 2Table of Content1 Access Control List Fundamentals 2 Access Control Lists (ACLs) Trang 3ACCESS CONTROL LIST FUNDAMENTALS ... Trang 29Standard ACL commands Access list number: 1  99 ip access-group access-list-number { in | out } ip access-group access-list-number { in | out } Router (config-if)# Trang 30Standard ACL ...  Alert an ACL use no access-list access-list-number Trang 12ACL numbersTrang 13Creating ACLs: Step 2{protocol} access-group access-list-number {protocol} access-group access-list-number Router

Ngày tải lên: 12/08/2015, 09:18

... (Jelinski and Moranda, 1972; Goel and Okumoto, 1979; Shanthikumar, 1981) and now has expanded to the consumers‘ point of view of software end users in software availability (Tokuno and Yamada, 2003) and ... CONSIDERING MAINTENANCE AND SECURITY ISSUES XIONG CHENG-JIE NATIONAL UNIVERSITY OF SINGAPORE 2011 Trang 2OF COMPUTER SOFTWARE SYSTEMS CONSIDERING MAINTENANCE AND SECURITY ISSUES XIONG CHENG-JIE ... increase in demand for software in the market, software systems are playing more and more important roles day by day Software becomes more and more complex and difficult to design, produce and maintain,

Ngày tải lên: 10/09/2015, 15:51

... nodes and relays, low and variable channel capacity, and dynamic topology due to node mobility In this study, we concentrate on three main layers: the physical, media access control (MAC), and ... bandwidth-delay characteristics • Wireless vulnerabilities and limited physical security – while there are existing Trang 13link-layer security techniques, a lot of work is still needed on security ... Each routing protocol has advantages and disadvantages, and fits well for certain situations Hybrid protocols combine the techniques of table-driven and demand-driven protocols trying to obtain

Ngày tải lên: 26/11/2015, 10:49

... of TCP and describes the specific issues addressed bythe thesis The following sections discuss congestion control mechanisms of TCP,the issues with TCP congestion avoidance and control, and solutions ... presents a brief description of TCP congestion avoidance and controland the issues concerning it Two specific issues with TCP congestion avoidance andcontrol mechanism are identified for further examination, ... avoidance and control mechanism, latersupplemented with fast recovery and fast retransmit mechanisms became the defacto standard [6] for TCP However, there are some issues with TCP congestioncontrol

Ngày tải lên: 28/11/2015, 13:43

... Big Data and cloud storage raised many security issues such asdata Loss, malicious insiders and data breaches due to trust, loss of control over data,and multi-tenancy issues These issues and challenges ... transfer encryption, privacy issues, insuf-ficient physical security and security configurations, and security configurations, andfirmware This clearly reveal that the current security mechanisms are ... Granular Access Control One of the essential functional elements in Big Data environment to provide accessrights for users is granular access control This access control restricts the access ofcertain

Ngày tải lên: 14/03/2022, 15:31

... Authorized Physical Access and Exploitation with Unauthorized Physical Access and Exploitation from Unauthorized Wireless and Remote Access Trang 13Taking Action Based on the Security Posture 176Trang ... Trang 2Implementing NAP and NAC Security TechnologiesThe Complete Guide to Network Access Control Daniel V Hoffman Wiley Publishing, Inc. Trang 4Implementing NAP and NAC Security TechnologiesThe ... technologies, and standards, theentire market is extremely difficult to understand and comprehend Thisconfusion leads to many misconceptions and, frankly, many people take bitsand pieces of information

Ngày tải lên: 25/03/2014, 11:44

... H Open AccessInconsistency resolving of safety and utility in access control Jianfeng Lu1*, Ruixuan Li2, Jinwei Hu3and Dewu Xu1 Abstract Policy inconsistencies may arise between safety and utility ... effectiveness and efficiency of our approach Keywords: access control, safety, utility, separation-of-duty 1 Introduction The safety and utility policies are very important in an access control system ... to SSoD policies in access control Neither SA nor SSoD by itself is sufficient to capture both safety and utility requirements Without the utility requirement, an access control state can satisfy

Ngày tải lên: 20/06/2014, 22:20

... The standardized solution is the Hybrid Coordination Function (HCF), that includes the mandatory Enhanced Distributed Channel Access (EDCA) protocol and the optional Hybrid Control Channel Access ... AWPP: A New Scheme for Wireless Access Control Proportional to Traffic Priority and Rate Thomas Lagkas1and Periklis Chatzimisios2 1 Department of Informatics and Telecommunications Engineering, ... medium access Total fairness, that is equal probabilities of medium access among stations, is not possible and not desired, since stations may carry traffic flows of different priority and rate and

Ngày tải lên: 21/06/2014, 05:20

... band, the arrival of a PU will force the termination of one SU when there areN − i + 1 SUs in the second band, of two SUs when there areN − i + 2 SUs in the second band, and so on The second and ... variation ofPft2 and the interference with the SUs arrival rate when the objectives areBft2 ≤ 0.05 and limitPft andPif(n ≤ N) to their objectives or below, and Trang 8(1)D, Dft andDif are internal ... for systems 3a and 4 Recall that systems 3a and 5a do not support SH, deploy CAP but no repacking, while systems 4 and 5b do support SH, deploy CAP and repacking However, S5a and S5b deploy the

Ngày tải lên: 21/06/2014, 17:20

... to a class you create Access control in Java is a little tricky because there are four access controls (levels of access) but only three access modifiers The fourth access control level (called ... n Access certain methods and variables within class B, depending on the access control of those methods and variables In effect, access means visibility If class A can't see class B, the access ... access and nonaccess modifiers, and you have more modifiers to choose from (and combine) than when you're declaring a class Access Modifiers Because method and variable members are usually given access

Ngày tải lên: 05/07/2014, 02:20

... with Private VLANs and VLAN Access Control Lists Trang 2Securing Networks with Private VLANs and VLAN Access Control ListsVLAN Access Control Lists Known Limitations of VACLs and PVLANs Example ... Ofcourse, each one of these products and technologies plays a particular role within the overall security implementation, and it is essential for the designer to understand how these elements can be ... most implementations and give the details related to the security deployment of PVLANs and VACLs These scenarios are: Trang 7In this example, DMZ servers are supposed to be accessed by external

Ngày tải lên: 17/04/2017, 08:33

... 1) Access Control in Open Systems (2) Trang 52.1) Proposed Access Control Architecture - BasicsInformationSystem Authorized Users Other Users Access ControlMechanism Trang 62.2) Proposed Access ... Trang 17 Using Trust for Role-Based Access Control (RBAC)Prof. Bharat Bhargava Center for Education and Research in Information Assurance and Security (CERIAS) and Department of Computer Sciences ... be used by access control mechanisms  To limit granting privileges to potentially harmful users  How to establish trust ? a trust decision?  Using trust for attribute-based access control vulnerable

Ngày tải lên: 30/01/2020, 10:17

... m[s, o]  This is the discretionary access control part of the model  The other two properties are the mandatory access control parts of the model  Simple security property (ss-property)  A ... current security level of a subject (f C ≤ f S )  f O : O → L classification of an object 28 Trang 29 Discretionary Security Property (ds-property)  Access must be permitted by the access control ... và Kỹ Thuật Máy Tính  Mandatory Access Control (MAC):  MAC applies to large amounts of information requiring strong protect in environments where both the system data and users can be classified

Ngày tải lên: 30/01/2020, 10:27

... Trang 1© 2012 Cisco and/or its affiliates All rights reserved 1Access Control Lists for Threat Mitigation Trang 2• Lists the benefits of ACLs • Describes the building blocks and operational framework ... Professional and the CLI to deploy and verify a threat containment strategy using ACLs • Demonstrates the use of Cisco Configuration Professional and the CLI to correlate ACL log and alarm information ... both the source and destination packet addresses They can also check for specific protocols, port numbers, and other parameters, which allows administrators more flexibility and control The two

Ngày tải lên: 30/01/2020, 10:49

... ControlTrang 10Access Control Modelsv Mandatory Access Control v Discretionary Access Control v Role-Based Access Control v Rule-Based Access Control Trang 11Mandatory Access Control (MAC) modelv ... into two broad categories v Logical access control v Physical access control Trang 22Logical Access Control Methodsv Logical access control includes v Access control lists (ACLs) v Group policies ... PolicyTrang 47Access Control Methodsv The methods to implement access control are divided into two broad categories v Logical access control v Physical access control Trang 48Physical Access Controlv

Ngày tải lên: 30/01/2020, 11:58

... Server 2008 – Reading chapter 4 – Access control for Databases: Concepts and Systems Elisa Bertino, et al Trang 3Introduction to DAC Discretionary Access Control (DAC):  User can protect what ... definition: security model  Access matrix model  Take-Grant model Trang 9Security model A security model provides a semantically rich representation in that it allows functional and structural ... can define the type of access (read/write/execute/…) and grant access to others.  The typical method of enforcing DAC in a database system is based on the granting and revoking privileges

Ngày tải lên: 30/01/2020, 12:23

... 1   9 Role-Based Access Control (RBAC) Role Classification Algorithm Prof. Bharat Bhargava Center for Education and Research in Information Assurance and Security (CERIAS) and Department of ... Student) Prof Sanjay Madria (U Missouri-Rolla) This research is supported by CERIAS and NSF grants from IIS and ANIR. Trang 2RBAC Role Classification Algorithm- Outline 1) Introduction 2) Algorithm ... U is a normal user else U is an intruder and an alarm is raised Trang 7for every cluster C i in cluster list     calculate the distance between Rec and C i find   the closest cluster C min if C

Ngày tải lên: 30/01/2020, 13:05

... kind of permissions can access specific resources Although many access control models have been developed like Discretionary Access Control (DAC) [2] or Mandatory Access Control (MAC)[3], only ... REVIEW 15 2.1 RBAC and STRBAC 15 2.1.1 Role-Based Access Control (RBAC) 15 2.1.2 Administrative Role-Based Access Control (ARBAC) 18 2.1.3 Spatial-Temporal Role-based Access Control (STRBAC) ... Role-based Access Control (RBAC) has made great attention in the security community and is widely deployed in the enterprise as a major tool to manage security and restrict system access to unauthorized

Ngày tải lên: 26/01/2021, 06:49

... Trang 1Active Minds Changing LivesProposal 2017-2019 ACCESS CONTROL SECURITY UPGRADES Trang 2Higher Education Project Proposal Access Control Security Upgrades Western Washington University Institution ... Title Access Control Security Upgrades Project Location (City) Bellingham 1 Problem Statement (short description of the project – the needs and the benefits) Western’s existing access control ... of electronic control to all exterior doors of major academic buildings and designated high security internal doors within those buildings 4 Improve campus building access and security by consolidating

Ngày tải lên: 21/10/2022, 20:23

... 2012. Russian Political, Economic, and Security Issues and U.S. Interests Congressional Research Service 26 Trade, Economic, and Energy Issues Russia and the Global Economic Crisis 51 The ... Russian Political, Economic, and Security Issues and U.S. Interests Congressional Research Service 25 has been evidenced by the signing of a memorandum of understanding on counter-terrorism ... and cooperation with the United States, see CRS Report RL31543, Russian National Security Policy After September 11, by Stuart D. Goldman. Russian Political, Economic, and Security Issues and...

Ngày tải lên: 23/03/2014, 21:20