> Once hosts.allow and hosts.deny are modified do we need to restart a
> daemon or something? How does Linux know they've been updated?
No, you don't need to do anything. This assumes, of course, that the
service is in fact using TCP wrappers to begin with. You should check to
make sure after making a change. You can do this by excluding 'localhost'
from the hosts.allow file and doing something like:
# telnet localhost
which should return 'connection closed by foreign host'. You might find
some useful information here:
http://www.linuxsecurity.com/docs/
Later,
dave
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