Q on Sentry

[Philip Ching (605.734.71) <pching aplcenMP apl jhu edu>]

Hi all,

I just bought RH Linux Power tools and installed a security
package called 'sentry' via rpm. I have two questions and hope
to get a few comments from some experts out there:

1) How does the sentry get executed? Currently the executable
   is stting at /usr/abacus/sentry ... kind of a strange place.

   The README.install says use the command: sentry -tcp

   But should it be a daemon process and started from somewhere
   like /etc/rc.d/init.d ?

2) I have the following two files set (before installing sentry):

   /etc/hosts.deny
   ALL : ALL

   /etc/hosts.allow
   in.telnetd : 123.456.789.
   in.ftpd : 123.456.789.

   Do I still need to install the sentry package since I am already
   blocking just about everything (except limited ftp and telnet)?

Thanks for your time!

Philip