imapd.conf parameter: sasl_minimum_layer not working as advertised
cyrus at gnosys.biz
Tue Nov 8 08:13:44 EST 2005
I'm using Cyrus IMAPd v2.2.12.
I'd like to allow clients to authenticate using the plaintext mechanism,
but only if those connections are secured with TLS. Is there a way to
I have the following settings in imapd.conf:
But I can still connect to the server with unencrypted connections and
do plaintext authentication.
According to man imapd.conf:
The minimum SSF that the server will allow a client to negotiate. A
value of 1 requires integrity protection; any higher value requires
some amount of encryption.
Before using the sasl_minimum_layer parameter at all, the server was
allowing plaintext logins that were encrypted with TLS and those that
were not. I figured that by setting this parameter to 2, I would
accomplish my goal of allowing plaintext logins but only if encrypted
with TLS and denying unencrypted plaintext logins. When the setting of
2 failed, I tried 56, but it too allows unencrypted plaintext
Is this a bug or am I missing something?
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