How do I find the ip address of something.mystuff.int.nal

funkyCable · 30-09-2011, 10:36

From the command line how do i find the ip address of something.mystuff.int.ernal

Kymmy · 30-09-2011, 10:38

Just ping it

Code:

ping something.mystuff.int.ernal

funkyCable · 30-09-2011, 10:46

Thanks Kymmy,
just one more question. When you connect to the network your PC gets a DNS Server IP which it uses to resolve names instead of IP. If it cant find a name does it try another dns server and so and so until it can resolve the name to IP. when you request a url does it have to keep looking for the ip or does the dnsserver /your pc remember what the inital response was?

Kymmy · 30-09-2011, 10:53

Your PC first checks on the subnet it's on to determined if the name is a local name, then it checks the DNS it has (either the router or directly to the DNS servers (depends on how the lan is set up but the router will just forward it to the NS servers it has.) If the first DNS doesn;t respond then it tries the alternate and if that doesn;t respond then it'll error out.

funkyCable · 30-09-2011, 11:09

Thanks,My IT department dont know how my browser would work if it bypassed the proxy and trying to lookup a namespace. So I'm trying to educate them lol.

---------- Post added at 11:09 ---------- Previous post was at 10:58 ----------

So it only tries twice and "errors" out as in times out. for load balancing on the network could the order of the DNS lookup change? We having intermitted 400 Bad Request Errors which I'm trying to prove is a network issue.

Kymmy · 30-09-2011, 11:23

It only tries the name servers it has (or the router has).. you can always add more or less in the network properties so you can use VM, opendns, google..etc but it'll try them in the order given

funkyCable · 30-09-2011, 11:26

Does the proxy make the request to the dns or does the client machine make the request to the dns which then points the proxy to the ip address?

Kymmy · 30-09-2011, 11:31

Depends on the proxy and the browser.. most though will use the local DNS settings and then proxy the address recieved.

tweetiepooh · 30-09-2011, 17:06

You can also use nslookup <name> for the translation. This will also show the DNS server being used. On Linux you may have dig available but I've never really got on with that.