پاورپوینت کامل Introduction to Networking Monitoring and Management 49 اسلاید در PowerPoint

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پاورپوینت کامل Introduction to Networking Monitoring and Management 49 اسلاید در PowerPoint

اسلاید ۴: What is network management Refers to the broad subject of managing computer networks. There exists a wide variety of software and hardware products that help network system administrators manage a network. Network management covers a wide area, including: – Security: Ensuring that the network is protected from unauthorized users. – Performance: Eliminating bottlenecks in the network. – Reliability: Making sure the network is available to users and responding to hardware and software malfunctions.

اسلاید ۵: System & Service monitoringReachability, availabilityResource measurement/monitoringCapacity planning, availabilityPerformance monitoring (RTT, throughput)Statistics & Accounting/MeteringFault Management (Intrusion Detection)Fault detection, troubleshooting, and trackingTicketing systems, help deskChange management and configuration monitoringWhat is network management

اسلاید ۶: Make sure that the network is up and running. Thus, we need to monitor it:Deliver projected SLAs (Service Level Agreements)Depends on policyWhat does your management expectWhat do your users expectWhat do your customers expectWhat does the rest of the Internet expectIs 24×7 good enoughTheres no such thing as 100% uptime (as we’ll see) Getting started

اسلاید ۷: What does it take to deliver 99.9 % uptime30.5 x 24 = 762 hours a month(762 – (۷۶۲ x .999)) x 60 = 45 minutes only 45 minutes of downtime a month!Need to shutdown 1 hour / week(762 – 4) / 762 x 100 = 99.4 %Remember to take planned maintenance into account in your calculations, and inform your users/customers if they are included/excluded in the SLAHow is availability measuredIn the core End-to-end From the InternetGetting started: “Uptime”

اسلاید ۸: Getting started: BaseliningWhat is normal for your networkIf you’ve never measured or monitored your network you need to know things like:Load on linksJitter between endpointsPercent usage of resourcesAmount of “noise”:Network scansDropped dataReported errors or failures

اسلاید ۹: Know when to upgradeIs your bandwidth usage too highWhere is your traffic goingDo you need to get a faster line, or more providersIs the equipment too oldKeep an audit trace of changesRecord all changesMakes it easier to find cause of problems due to upgrades and configuration changesKeep a history of your network operationsUsing a ticket system let you keep a history of events.Allows you to defend yourself and verify what happenedWhy network management

اسلاید ۱۰: AccountingTrack usage of resourcesBill customers according to usageKnow when you have problemsStay ahead of your users! Makes you look good.Monitoring software can generate tickets and auto- matically notify staff of issues.TrendsAll of this information can be used to view trends across your network.This is part of baselining, capacity planning and attack detection.Why network management

اسلاید ۱۱: Trends and automation allow you to know when you are under attack.The tools in use can help you to mitigate attacks:Flows across network interfacesLoad on specific servers and/or servicesMultiple service failuresAttack Detection

اسلاید ۱۲: Consolidating the dataThe Network Operations Center (NOC)“Where it all happens”Coordination of tasksStatus of network and servicesFielding of network-related incidents and complaintsWhere the tools reside (”NOC server”)Documentation including:Network diagramsdatabase/flat file of each port on each switchNetwork descriptionMuch more as youll see a bit later.

اسلاید ۱۳: – Monitoring- Data collection- Accounting- Capacity planning- Availability (SLAs)‏- Trends- Detect problems- Change control & monitoring- Improvements- Upgrades- Fix problems- User complaints- Requests- NOC Tools- Ticket systemTicketTicketTicketTicketTicketNotificationsThe big picture

اسلاید ۱۴: PerformanceCricketIFPFMflowcmrtgnetflowNfSenntoppmacctrrdtoolSmokePingSNMP/Perl/pingTicketingRT, Trac, RedmineNet ManagementBig BrotherBig SisterCactiHypericMuninNagios*NetdiscoNetdot OpenNMSSysmonZabbix Change MgmtMercurialRancid (routers)RCSSubversionSecurity/NIDSNessusOSSECPreludeSamhainSNORTUntangleA few Open Source solutions…

اسلاید ۱۵: Questions

اسلاید ۱۶: Part II: Details Some details on the core concepts:Network documentationDiagnostic toolsMonitoring toolsPerformance toolsActive and passive toolsSNMPTicket systemsConfiguration and change management

اسلاید ۱۷: Maybe you’ve asked, “How do you keep track of it all”…Document, document, document…Documentation

اسلاید ۱۸: Basics, such as documenting your switches…What is each port connected toCan be simple text file with one line for every port in a switch:health-switch1, port 1, Room 29 – Director’s officehealth-switch1, port 2, Room 43