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Re: SSPI and SPN canonicalization

From: Daniel Stenberg <>
Date: Fri, 11 Jan 2019 13:59:43 +0100 (CET)

On Mon, 7 Jan 2019, Brandon Ewing wrote:

> By default, MIT kerberos will perform DNS canonicalziation of the SPN,
> controlled by the dns_canonicalize_hostname value in libdefaults:
> However, Windows SSPI does perform any canonicalization at all that I can
> find. Chrome/Chromium appears to perform the canonicalization itself, also
> controllable via config:
> Does curl have a similar config setting to control this behavior?

I don't even know what an SPN is and my kerberos knowledge is very sparse, but
I don't think curl has this ability

> If not, can it be added?

curl is just code. Just about anything can be added if someone just makes it
their priority!

Received on 2019-01-11