blocking access to saslauthd

Russell Bell russellbell at
Fri May 15 22:31:48 EDT 2009

Some crackers have decided to flood our server with sasl authentication
requests to our vsftpd server.  Such access is not available but they
waste bandwidth and processing time trying.  Is there anyway to block
them?  Just blocking IPs would help; blocking all access but SMTP (all
we use sasl for) would be great, too.

Thanks for your attention.

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