I've been probing a network, just playing around with various commands to see what they'll do, what I can get them to do and that sort of thing. (Just a learning experience, I'm not trying to crack them.)
So I use the host command on them....and here's what comes up:
Notice that when it returns the lines, it reverses the IP addresses...maccurdy@dburnet:~> host anl.gov
anl.gov has address 141.221.50.30
anl.gov has address 146.137.96.48
anl.gov has address 146.137.162.100
anl.gov has address 146.139.250.20
maccurdy@dburnet:~> host -l 146.137.96.48
48.96.137.146.in-addr.arpa domain name pointer rhino221.anl.gov.
maccurdy@dburnet:~> host -l 146.137.162.100
100.162.137.146.in-addr.arpa domain name pointer tiger201.anl.gov.
maccurdy@dburnet:~> host -l 146.137.250.20
Host 20.250.137.146.in-addr.arpa not found: 3(NXDOMAIN)
Does anyone know why its doing this? Is it just returning a weird echo?maccurdy@dburnet:~> host -l 146.137.96.48
48.96.137.146.in-addr.arpa domain name pointer rhino221.anl.gov.
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