Yes. Our recommendation is to achieve this using an external web server, such as NGINX or Apache HTTPD that will be listening to the desired port on the desired host, and forward the requests to Artifactory.
Alternatively, you can modify the Artifactory Tomcat "Connector Port" from the default 8081 to 80 ($ARTIFACTORY_HOME/tomcat/conf/server.xml).
However, this method will require you to apply this setting every Artifactory upgrade.
Moreover, as ports below 1024 are restricted in Linux operating systems, you will need to grant the user that runs Artifactory root privileges. This is something that we strongly recommend against.