Network Tools• TCP/IP interface configuration query - MAC (HW) address

and IP address– Linux - /sbin/ifconfig– MS Windows – ipconfig/all

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• MAC – IP address resolution - finding the MAC address of a „Net-neighbours“

• arp utility - display the content of ARP cache (ARP table)

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Network Tools

• IP host reachability test – ping [hostname]. • Measuring the round-trip time for messages sent

from the originating host to a destination computer.

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Network Tools

NetworkTools• Routing table display– Linux - route – MS Windows – route print– Linux, MS Windows - netstat -r

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• Diagnostic tool for displaying the route (path) and measuring transit delays of packets across an IP network.– Linux – traceroute [hostname]– MS Windows – tracert [hostname]

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Network Tools

• Query Internet name servers interactively or non-interactively (DNS lookup utility)– nslookup (Linux, MS Windows)

Network Tools

DNS query sites •http://who.is/dns/•http://dnsquery.org/ •https://www.easywhois.com/

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Domain Name System (DNS)

Network Tools

NetworkTools• Secure transfer file from/to a remote host– Linux – scp [[user@]host1:]file1

[[user@]host2:]file2 – MS Windows – winscp program

• Logging to the remote host– Linux – ssh [user@]hostname [command] – MS Windows – putty program

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