networks_and_internets

LMU - #1

Get your computer's IP address, subnet mask, router, and domain name server(s)

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Examine your computer's full routing table

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Use arp to discover hosts that are on the same network

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Use ping to make contact with:

A host you discovered via arp

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The default router

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One of your domain name servers

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A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

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Use traceroute to discover the path taken to these same hosts

A host you discovered via arp

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The default router

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One of your domain name servers

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A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

LMU - #2

Get your computer's IP address, subnet mask, router, and domain name server(s)

Alt text Alt text Alt text

Examine your computer's full routing table

Alt text Alt text Alt text

Use arp to discover hosts that are on the same network

Alt text Alt text

Use ping to make contact with:

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

Use traceroute to discover the path taken to these same hosts

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

Private Network (HOME) - #1

Get your computer's IP address, subnet mask, router, and domain name server(s)

Alt text Alt text Alt text

Examine your computer's full routing table

Alt text Alt text Alt text

Use arp to discover hosts that are on the same network

Alt text

Use ping to make contact with:

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

Use traceroute to discover the path taken to these same hosts

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

For www.lmu.edu and the chosen Internet host, use dig to discover their IP addresses

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Use nmap to see what ports are open on these hosts

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Use nmap to see what ports are open on one of the intermediate "stops" discovered by traceroute to any host outside of your network

Alt text Certain intermediate stops are not getting pinged, host seems down. Wonder why?

Private Network (HOME) - #2

Get your computer's IP address, subnet mask, router, and domain name server(s)

Alt text Alt text Alt text

Examine your computer's full routing table

Alt text Alt text Alt text

Use arp to discover hosts that are on the same network

Alt text

Use ping to make contact with:

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

Use traceroute to discover the path taken to these same hosts

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

For www.lmu.edu and the chosen Internet host, use dig to discover their IP addresses

Alt text

Alt text

Use nmap to see what ports are open on these hosts

Alt text

Alt text

Use nmap to see what ports are open on one of the intermediate "stops" discovered by traceroute to any host outside of your network

Alt text Certain intermediate stops are not getting pinged, host seems down. Wonder why?

Public Network (Starbucks) - #1

Get your computer's IP address, subnet mask, router, and domain name server(s)

Alt text Alt text

Examine your computer's full routing table

Alt text Alt text Alt text

Use arp to discover hosts that are on the same network

Alt text

Use ping to make contact with:

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

Use traceroute to discover the path taken to these same hosts

A host you discovered via arp

Alt text

The default router

Alt text

One of your domain name servers

Alt text

Alt text

A host on the Internet (most likely a website, but for more variety, see if you can find a different kind of public host, such as a game server, mail server, chat server, or cloud storage)

Alt text

For www.lmu.edu and the chosen Internet host, use dig to discover their IP addresses

Alt text

Alt text

Use nmap to see what ports are open on these hosts

Alt text

Alt text

Use nmap to see what ports are open on one of the intermediate "stops" discovered by traceroute to any host outside of your network

Alt text