You can download the RPM packages on a separate machine (with internet access) with the following command. Then you can transfer the packages by any means possible to the intended machine.

$ yum install --downloadonly --downloaddir=/tmp/neo4j_rpm_install_packages neo4j-enterprise-3.5.7

When working with a private/disconnected environment where you can use wget https* you can prepare all files elsewhere, then place them on a cloud storage repository to use with the wget command from the disconnected machine to transfer all the needed files.

To install Neo4j you will need to install the GPG Key. You can download it elsewhere and transfer it to the intended machine and then perform the needed steps before installing Neo4j Enterprise edition:

$ wget https://debian.neo4j.org/neotechnology.gpg.key

$ rpm --import neotechnology.gpg.key

To install the Neo4j Database you install the RPM package with the command rpm -i <package.rpm>:

$ rpm -i neo4j-enterprise-3.5.7-1.noarch.rpm

$ export NEO4J_ACCEPT_LICENSE_AGREEMENT=yes
$ rpm -i neo4j-enterprise-3.5.7-1.noarch.rpm

Configure Neo4j with the configuration file. See the file locations for RPM installation

You can enable the service for startup upon reboot with (use root or sudo):

$ systemctl enable neo4j

To view the neo4j.log for Debian and RPM, use

$ journalctl --unit=neo4j

$ journalctl -e -u neo4j