You have performed an nslookup on your Mac OS X computer. This value will vary depending on your location and connection to the network. In this example, the name server is 10.20.248.13. In addition the nslookup will also return the name server used to make the request. The nslookup results will display the actual IP address (or addresses) for the name queried. Step 2 - From the Terminal prompt, enter "nslookup to return the IP address for You may also do an nslookup for a non-UNH address such as Google.
To open a terminal session, double-click on "Terminal.app". Terminal can be found by opening the Finder, select Applications and Utilities. It get's better, depending on your hardware, you may not even be on an IP network that is based on Ethernet ATM for example.Task: To perform an nslookup on a Mac OS X computer. You can use ARP, but will only get the MAC address of the first hop.
Too bad that most situations with HTTP, which builds on TCP/IP, you are 99.99% never in the same network segment as your user. Here you can only talk to the switch via Ethernet. With a switch in the network a network segment is only cable that connects you to the switch. If you have good old BNC or a hub you have one network segment with all uses. On wire based networks, this depends on the hardware. Every user on the network can talk via Ethernet to every other user. An entire wireless network is a network segment. So the question is, what is a network segment? It depends on the technology you use, but here are the common cases. But this works as expected only if you are on the same network segment. You can use ARP to get a MAC address for an IP address. It is used to identify for which user on the network segment a packet is. The MAC address is a unique address of the network card. Here is a short refresher on Ethernet and IP.
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