Carlos E. R. wrote:
The Thursday 2008-01-17 at 20:32 +0100, Sandy Drobic wrote:
Does IP now send host names along with the IP address? Any such
announcement would have to be application dependent. The name I've
No, unless the developer likes pain, the resolution is the job of the os.
If your box opens a connection to a remote server then the remote
server only sees the ip address of your box. The only way to get a
hostname for that ip address is to look up the ptr record of that ip
from the authoritative dns server responsible for the address space
that contains the ip address of your box.
I think there are exceptions, for example in email. Look, from one of mine:
Received: from nimrodel.valinor (88.*.*.*) by ctsmtpout2.frontal.correo
(7.2.056.6) (authenticated as ***)
id *** for [email protected]; Thu, 17 Jan 2008 16:29:13 +0100
The smtp server of my ISP logs that my machine names itself as
nimrodel.valinor, and then logs the real IP
The only rub here is is that my IP is fixed and the ISP manually creates
the reverse lookup and adds that to it's reverse zone. In my case they
added mail.3111skyline.com as the reverse lookup for the IP
66.76.63.120. Which is fine, but I couldn't explain why all outbound ssh
sessions show up as mail.3111skyline.com. Now I know, this thread and
the input has lifted the veil of confusion.
--
David C. Rankin, J.D., P.E.
Rankin Law Firm, PLLC
510 Ochiltree Street
Nacogdoches, Texas 75961
Telephone: (936) 715-9333
Facsimile: (936) 715-9339
www.rankinlawfirm.com
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