I've recently started doing the SYNC-thing with denyhosts.  I'm very impressed 
and pleased with this sort of collective protection.  However, after hacking 
the denyhosts client in order to receive email notifications of SYNC additions 
to the hosts.deny file, I've started becoming concerned about the size of the 
hosts.deny file.  Now, call me paranoid, but I haven't enabled the PURGE 
option.  To my mind, if someone's trying to break-in, they should be forever 
banned.  Therefore, my hosts.deny file is growing quite big  (almost 2700 hosts 
listed as of this moment).  However, with the constant additions to the 
hosts.deny file, I'm becoming concerned about the possible 'drag' this will put 
on legitimate log-on attempts  to my box.  So, my question are:

1)  Does anyone know of an 'upper-limit' to the number of tcp_wrappers entries? 
 I know since denyhosts is just appending to the hosts.deny file, 
theoretically, the limit's to the free-space on the disk, but I'd like to know 
if anyone's seen an sshd daemon (with tcp_wrappers enabled), or any other 
tcp_wrapper-included daemon, crap out because the hosts.deny file has gotten to 
be too much for it to handle?
2)  Whether there is or is not an 'upper-limit' to the tcp_wrappers-enabled 
programs, has someone seen or become aware that over some number of entries, 
the tcp_wrapper-enabled program(s) seem to slow-down or become non-responsive?

Thanks in advance for any replies.

David



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