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6.5.1. Software Tools and Commands

ToolPurpose
pingTest reachability (ICMP echo)
traceroute/tracertShow path to destination
nslookup/digQuery DNS
ipconfig/ifconfig/ipView/configure IP settings
netstatShow connections and listening ports
arpView/manage ARP cache
tcpdump/WiresharkCapture and analyze packets
nmapPort scanning, network discovery
Alvin Varughese
Written byAlvin Varughese
Founder•15 professional certifications