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On 3/10/21 6:27 AM, Mark Knecht wrote: |
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> Caveat - not an expert, just my meager understanding: |
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> |
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> 1) The name 'localhost' is historically for developers who want to |
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> access their own machine _without_ using DNS. |
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Eh.... |
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Using the /name/ "localhost" still uses name resolution. It could use |
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DNS or it may not. It /typically/ means the /etc/hosts file. But it |
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could mean DNS or NIS(+) or LDAP or something more esoteric. |
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IMHO what's special about the "localhost" name in particular is that |
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it's an agnostic / anycast method to say the local host that a given |
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program is running on without regard to what the actual host name is. |
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> 2) By general practice sometime in the deep, dark times 127.0.0.1 was |
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> accepted for this purpose. There's nothing special about the address. |
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Deep, dark times? It's still used every single day across multiple |
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platforms, Linux, Unix, Windows, z/OS, i/OS, you name it. |
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> 3) I read the original quoted comment in the Kerberos Guide as a warning |
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> - 'to make matters worse, __SOME__" |
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What did the warning mean to you? Because I took it as "be careful, |
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your $OS /may/ do this incorrectly". Where "this" is putting the FQDN |
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on the same line as 127.0.0.1 and / or ::1. |
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> 4) In my /etc/hosts I do _NOT_ map my machine's name to the same address |
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> as localhost, avoiding the Kerberos warning: |
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ACK |
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I'm grateful for corroboration, but unfortunately that doesn't speak to |
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why the Gentoo handbook suggests what it does. |
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-- |
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Grant. . . . |
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unix || die |
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