network and system monitoring with zenoss core
Tài liệu Advanced Network and System Administration ppt
... abandon Search and compare Modification Operations Add, modify, modifyRDN, and delete 17 Authentication Anonymous Authentication Binds with empty DN and password Simple Authentication Binds with ... Add data with ldapadd Verify functionality with ldapsearch 21 LDAP Authentication Configure server with schema + user data Point clients to hostname and rootDN of svr /etc/ldap.conf and /etc/openldap/ldap.conf ... with any errors Client sends an unbind request Server sends result code and closes socket 16 LDAP Operations Client Session Operations Query and Retrieval Operations Bind, unbind, and...
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Tài liệu The McAfee Network Security Platform: Bridging Network and System Security doc
... Data Sheet The McAfee Network Security Platform: Bridging Network and System Security Integration with ePO: Real-Time System Aware IPS By doing a simple right click within the Network Security Platform ... Integration with NAC: Post Admission Control McAfee NAC detects and assesses systems attempting to enter your network and can enforce policy compliance on the systems before allowing them on to the network ... McAfee NAC and Network Security Platform (NSP) collaboratively to handle the offending system For example, using NSP you can quarantine the system and re-direct all HTTP traffic from the system to...
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Network and System Security pptx
... assuring that network and system security issues are addressed This book provides an extensive analysis of network and system security practices, procedures, and technologies Design issues and architectures ... GSM network, the CDMA network, and the 802.11 wireless LAN The GSM network and the CDMA network are the main network Introduction xxxiii technologies that support modern mobile communication, with ... NIDS, and intrusion prevention systems are continuously evolving technologies In this chapter, Pandya’s focus has been and will be wired networks However, as wireless data networks proliferate and...
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principles of network and system administration
... Principles of Network and System Administration Second Edition Mark Burgess Oslo University College, Norway Principles of Network and System Administration Second Edition Principles of Network and System ... 3 6 System components 2.1 What is ‘the system ? 2.2 Handling hardware 2.3 Operating systems 2.4 Filesystems 2.5 Processes and job control 2.6 Networks 2.7 IPv4 networks ... knowledge about computing systems of all sizes and shapes Mark Burgess Oslo University College Chapter Introduction 1.1 What is network and system administration? Network and system administration...
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Báo cáo y học: " Unusual towering elevation of troponin I after ST-elevation myocardial infarction and intensive monitoring with echocardiography post-percutaneous coronary intervention: a case report" ppsx
... and circulatory collapse on site within 10 minutes of his presentation His initial ECG in the ER showed ST elevations of >1.5 mm in leads V1 to V5, ST depressions in leads II and III and VF and ... to 515 ng/ml within six hours of PCI in our patient is an unusual presentation which reflects a composite of myocyte necrosis and reperfusion [8,9] Many non-randomized [10] and randomized studies ... two hours and was associated with diaphoresis Our patient was in severe respiratory distress with worsening mental status He was immediately given aspirin, sublingual nitroglycerine and statin,...
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Principles of Network and System Administration 2nd phần 2 doc
... existing network, serviceable or not; thus the first step is to acquaint ourselves with the system at hand The aim of this chapter is to learn how to navigate network systems using standard tools, and ... encapsulation and it is important to understand the basics of these mechanisms Network attacks make clever use of the features and flaws in these protocols and system administrators need to understand them ... continued to exist within the network, but they have been pushed toward the periphery of IP junctions As networks grow and traffic increases, one is forced to segment networks into more and more switched...
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Principles of Network and System Administration 2nd phần 3 pptx
... into As with most operating systems, GNU/Linux installations assume that you are setting up a stand-alone PC which is yours to own and with as you please Although GNU/Linux is a multiuser system, ... host with two network interfaces, both of which are coupled to a network, is called a dual-homed host Dual-homed hosts are important in building firewalls for network security A host with two network ... special area, with a bin directory and a lib directory so that binaries and libraries conform to the usual Unix conventions This makes the system consistent and easy to understand It also keeps...
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Principles of Network and System Administration 2nd phần 4 potx
... equipping networked operating systems with a simple immune system By analogy with the human body, an immune system is an automatic system that every host possesses which attempts to deal with emergencies ... establish a standard routine for running them and for using them If one fails, we can replace it with another 204 CHAPTER MODELS OF NETWORK AND SYSTEM ADMINISTRATION A disadvantage with uniformity ... Gateway Monitoring Protocol, but was quickly extended and became a standard for network monitoring SNMP was designed to be small and simple enough to be able to run on even minor pieces of network...
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Principles of Network and System Administration 2nd phần 5 pot
... importance is the random network A random network is formed by making random connections between nodes within a set Randomness is a good strategy for covering a large number of possibilities without making ... the other hand, the order in which cfagent evaluates AND and OR operations does matter, and the rule is that AND takes priority over OR, so that binds classes together tightly and all AND operations ... digested, understood and, not least, obeyed by users and system staff alike • Determine the system policy This is the prerequisite for all system maintenance Know what is right and wrong and know how...
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Principles of Network and System Administration 2nd phần 6 pot
... (Performance) A system is limited by its slowest moving parts Resources with slowly moving parts, like disks, CD-ROMs and tapes, transfer data slowly and delay the system Resources which work purely with ... Documentation and verification: A key reason for system failure is when a system becomes so complex that its users can no longer understand it Humans, moreover, are naturally lazy, and their performance with ... connection with maintenance of host state and its adaptability to changing demand SNMP tools such as MRTG, RRDtool and Cricket specialize in collecting data from SNMP devices like routers and switches...
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Principles of Network and System Administration 2nd phần 7 doc
... Berkeley printcap system Suggestion 12 (Unix printing) Install LPRng on all hosts in the network Forget about trying to understand and manage the native printing systems on system V and BSD hosts ... Berkeley and lp, lpstat and cancel commands from System V The daemon reads the three configuration files and handles spooling The configuration is challenging but straightforward and there is extensive ... entwined because the hardware and software that deal with delivery are also forced to deal with the sharing System administrators are barraged with technical specifications and explanations of these...
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Principles of Network and System Administration 2nd phần 8 pps
... fulfills its role in the system Security of a system requires the safe and predictable functioning of all 454 CHAPTER 12 SECURITY IMPLEMENTATION parts within a system, and the safe and predictable functioning ... dest=host2 serv=all IP action=Permit and IPSec Policy Rule 2: src =network1 dest =network2 serv=all IP action=Permit where host1 is assumed to be on network1 and host2 is on network2 Policy Rule is a more ... combination of routers and software systems The idea with a firewall is to keep important data behind a barrier which has some kind of passport-control and can examine and restrict network packets,...
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Principles of Network and System Administration 2nd phần 9 potx
... These are called open systems and closed systems • Open system: This is a subsystem of some greater whole An open system can be thought of as a black box which takes in input and generates output, ... properly characterize a system, we need a theoretical understanding of the system or subsystem which we intend to describe Dynamical 522 CHAPTER 13 ANALYTICAL SYSTEM ADMINISTRATION systems fall into ... difference between an open system and a closed system is that an open system is not always in a steady state New input changes the system The internal variables in the open system are altered by external...
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Principles of Network and System Administration 2nd phần 10 pps
... username and a password and end up with a command prompt The first thing we see is how inefficient the telnet protocol is, how passwords are transmitted in clear text over the network and how fragmentation ... on Distributed Systems: Operations and Management (DSOM 2003), 2003 [52] M Burgess Theory of Network and System Administration J Wiley & Sons, Chichester, 2004 [53] M Burgess and G Canright Scalability ... Association: Berkeley, CA), page 9, 1993 [141] S.E Hansen and E.T Atkins Automated system monitoring and notification with swatch Proceedings of the Seventh Systems Administration Conference (LISA VII) (USENIX...
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principles of network and system administration phần 1 docx
... PRICING AND COMMUNICATIONS NETWORKS network, and the ability to adapt and customize the service to the particular needs of the customers This economic perspective looks at the network and its ... and so operators can make money by being in control Similarly, video and television distribution use service-specific networks and make good profits Telephone networks are optimized for voice and ... increases demand Indeed, it is common for providers to give away network access and simple versions of network goods for free, so as to stimulate demand for other goods, build their customer base and...
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principles of network and system administration phần 2 pot
... 32 NETWORK SERVICES AND CONTRACTS 2.1.5 Guaranteed and Best-effort Services There is an important distinction between services that and not come with guarantees, and which correspondingly and ... concepts of network service layering and quality of service are covered in the classic networking textbooks of Walrand (1998), Walrand and Varaiya (2000) and Kurose and Ross (2001) The latter contains ... Walrand (1998) and Walrand and Varaiya (2000) can provide a good introduction to network service types, layering, and various technologies These also contain in-depth material on leaky buckets and...
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principles of network and system administration phần 3 potx
... reading References for the Internet and other communication technologies are the classic networking textbooks Walrand (1998), Walrand and Varaiya (2000) and Kurose and Ross (2001) The latter focuses ... characteristics such as availability and reliability (rerouting capabilities in case of failures), encryption and authentication, monitoring and auditing, and pricing and billing The QoS corresponds ... leaves room for a network service provider to manage and dimension his network in a way that exploits statistical multiplexing and to load his network sufficiently to compete with other providers...
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principles of network and system administration phần 4 ppt
... conservatively and then expand the network only as demand justifies it Prices are used to signal the need to expand the network One starts with a small network and adjusts prices so that demand equals ... buffer asymptotics and the corresponding effective bandwidths are de Veciana, Olivier and Walrand (1993), Elwalid and Mitra (1993), de Veciana and Walrand (1995), Courcoubetis and Weber (1995), ... 96 NETWORK CONSTRAINTS AND EFFECTIVE BANDWIDTHS Example 4.2 (Gaussian input) Suppose that X j [0; t] is distributed as a Gaussian random variable with mean ¼ j t and variance ¦ j...
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principles of network and system administration phần 5 docx
... demand elasticity In Figure 6.5 there are two customers classes, with demand functions x1 p/ D p and x2 p/ D 2 p The solution to (6.3) with the right hand side equal to 1=2 is p1 D 5=4 and ... Economides and Himmelberg (1995) and Shapiro and Varian (1998) A review of basic results on Lagrangian methods and optimization is in Appendix A Pricing Communication Networks: Economics, Technology and ... Ramsey prices p R We start with E D AB D E and p1 D MC This tariff appeals to customers with demand function of x M or more, increases social welfare since they consume more and balances costs By...
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