Click to edit Master subtitle style Chapter 18: Software and Hardware Tools Click to edit Master subtitle style

Chapter 18 Objectives The Following CompTIA Network+ Exam Objectives Are Covered in This Chapter: 1.5 Install and properly terminate various cable types and connectors using appropriate tools • Tools o Cable crimpers o Punch down tool o Wire strippers o Snips o OTDR o Cable certifier 2

Chapter 18 Objectives The Following CompTIA Network+ Exam Objectives Are Covered in This Chapter: 2.1 Given a scenario, use appropriate monitoring tools • Packet/network analyzer • Interface monitoring tools • Port scanner • Top talkers/listeners • SNMP management software o Trap o Get o Walk o MIBS • Alerts o Email o SMS • Packet flow monitoring • SYSLOG • SIEM • Environmental monitoring tools o Temperature o Humidity • Power monitoring tools • Wireless survey tools • Wireless analyzers 3

Chapter 18 Objectives The Following CompTIA Network+ Exam Objectives Are Covered in This Chapter: 2.2 Given a scenario, analyze metrics and reports from monitoring and tracking performance tools • Baseline • Bottleneck • Log management • Graphing • Utilization o Bandwidth o Storage o Network device CPU o Network device memory o Wireless channel utilization 4

Chapter 18 Objectives The Following CompTIA Network+ Exam Objectives Are Covered in This Chapter: 4.2 Given a scenario, analyze and interpret the output of troubleshooting tools • Line testers • Certifiers • Multimeter • Cable tester • Light meter • Toner probe • Speed test sites • Looking glass sites • WiFi analyzer • Protocol analyzer 5

Network Scanners Network scanner has become a broad term often referring to a family of tools used to analyze our networks Network scanners refer mainly to these three tools: Packet sniffers Intrusion Detection System / Intrusion Prevention System (IDS/IPS) software Port scanners 6

Network Scanners Packet Sniffers Packet sniffers actually look inside every packet on a network segment. Packet sniffers come in many flavors, and some of them, like Microsoft’s Network Monitor (NetMon) or Wireshark, are even free The basic purpose of packet sniffers (or a network analyzer) is to collect and analyze individual packets captured on a specific network segment to determine if problems like bottlenecks, retransmissions, and security breaches are present. 7

Network Scanners Intrusion Detection and Prevention Software (IDS/IPS) IDS detects unwanted attempts to manipulate network systems and/or environments IPS is a computer-security device that monitors network and/or system activities for strange or malicious behavior Snort is one of the more popular IDS/IPS software products Cisco offers an Adaptive Security Appliance (ASA) as a hardware enterprise solution A stack of Cisco ASA’s potentially protecting a network: 8

Network Scanners Intrusion Detection and Prevention Software (IDS/IPS) implementations are typically placed in the network where you’re most interested in data compromise evaluation: Internal network DMZ Web Server Firewall SQL Server IDS/IPS 9

Network Scanners Port Scanners A port scanner is a software tool designed to search a host for open ports. A portscan is the act of scanning for Transport Control Protocol (TCP) and UDP open ports on a single target host. port sweeping means scanning multiple hosts on a network for a specific listening TCP or UDP port 10

Network Scanners A program named Network Mapper (Nmap) can be used as a port scanner 11

Network Scanners Angry IP is a providing both IP-scanning and port-scanning abilities. Angry IP is not as complex as Nmap and extremely easy to use (a free open source program as well) 12

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Hardware Tools Cable Testers Cable-testing tools can range from simple, inexpensive mechanical devices to elaborate electronic testers that automatically supply you with test results An inexpensive cable tester 19

Loopback Plug A loopback test is a diagnostic procedure in which a signal is transmitted and returned to the sending device after passing through all or a portion of a network or circuit 20

Hardware Tools Wire-Map Testers A wire-map tester is a device that transmits signals through each wire in a copper twisted-pair cable to determine if it’s connected to the correct pin at the other end. Continuity Testers A continuity tester is an even simpler and less expensive device than a wire-map tester that’s designed to check a copper cable connection for basic installation problems like opens, shorts, and crossed pairs. 21

Hardware Tools Protocol Analyzer A protocol analyzer is often confused with a packet sniffer because some products really are both. A packet sniffer looks at all traffic on a network segment. A protocol analyzer analyzes protocols. Certifiers Certification testers or certifiers are used to determine whether your network meets specific International Organization for Standardization (ISO) or TIA standards. 22

Hardware Tools Time-Domain Reflectometer (TDR) A time-domain reflectometer (TDR) is a tool that finds and describes faults in metallic cables like twisted wire pairs and coaxial cables. Optical Time-Domain Reflectometer (OTDR) An optical time-domain reflectometer (OTDR) is an optoelectronic instrument used to give you information about optical fibers. We use OTDRs to give us information about the following: The fiber’s estimated length Its overall attenuation The location of faults 23

Hardware Tools Multimeter A multimeter or a multitester (also called a volt/ohm meter [VOM]) is a multitasking electronic measuring instrument. Used to troubleshoot electrical problems in a wide array of electrical devices like batteries, motor controls, appliances, power supplies, and wiring. 24

Hardware Tools Toner Probe A toner probe, also called a tone generator, is a simple copper cable tester that is simple to use and can be used to trace a wire in a wall. 25

Hardware Tools Butt Set A butt set essentially a portable telephone that allows you to test and monitor analog lines. Punch-Down Tool Twisted-pair cable usually terminated in wiring closets using a tool known as a punch-down tool. 26

Hardware Tools Cable Stripper/Snips Crimper A wire crimper, often simply called crimper, is a handy tool found in most network technicians’ tool bags. Crimpers are primarily used for attaching ends onto different types of network cables via a process known as crimping. Cable Stripper/Snips Before you can crimp a connector onto the end of a wire, you have to strip the cable with a type of cable stripper (or snips) and then properly put the wires into the connector. 27

Hardware Tools Voltage Event Recorder A voltage event recorder can troubleshoot and even provide preventative maintenance on your entire electrical system. Temperature Monitor Temperature systems can provide multiple sensors feeding data to a single control point. We can much more accurately track the temperature in our server rooms dynamically in real time. Line voltage: surge protectors 28

Environmental Monitors Designed to monitor the temperate, humidity, and air flow in an area or in a device. Temperature /Humidity Monitor Systems can provide multiple sensors feeding data to a single control point. We can much more accurately track the temperature in our server rooms dynamically in real time. 29

Summary Summary Exam Essentials Section Written Labs Review Questions 30