blocking access to saslauthd

Dan White dwhite at
Fri May 15 23:04:00 EDT 2009

Russell Bell wrote:
> 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.

Are you asking how to block all access to your server except for port 
25? Could you clarify what activities you are trying to prevent?

saslauthd should only be listening on a unix domain socket, protected by 
user/group permissions.

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