I obtained the Red Hat RPM version of Nessus

# rpm2tgz Nessus.rpm
# installpkg Nessus.tgz
# ln -s libcrypto.so.0 libcrypto.so.4
# ln -s libssl.so.0 libssl.so.4
# ln -s libdb4-4.so libdb-4.3.so
# ldconfig

Easy peasy

Oh and don't forget!

# /opt/nessus/bin/nessus-fetch

:P