By adding the only_from directive to the /etc/xinetd.d/amandaclient config file should prevent the launch of the client if from a wrong source.
The only from takes the form of onlyfrom=XX.XX.XX.XX Address or s FQDN wull work if the dNS system will resolve it for you onlyfrom=myclient.example.com -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org