[cabfpub] Underscore Characters in SANs
wthayer at godaddy.com
Wed Aug 7 04:47:04 UTC 2013
Can anyone tell me if there is a reason not to allow an underscore (_) character in a DNSName SAN field? From what I can tell, a DNSName can contain this character, and I can do DNS queries that return public FQDNs in the format "a_b.domain.tld". A host name does not permit this character, so it may not work properly in a browser, but from what I can tell, some other type of service using SSL should be able to leverage an SSL certificate with this character in the SAN.
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