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 Microsofts 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 ASAs potentially protecting a network: 8 Network Scanners Intrusion Detection and Prevention Software (IDS/IPS) implementations are typically placed in the network where youre 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 portscanning abilities. Angry IP is not as complex as Nmap and extremely easy to use (a free open source program as well) 12 Figure 18.6
Figure 18.7 Figure 18.8 Figure 18.9 Figure 18.11 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 its 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 thats 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 fibers 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 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. 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
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