By default, Artifactory limits deployments of files via the UI to 100mb, this limit can be changed in the UI at 'Admin' tab ? General.
Please be aware, however, that this limitation was put in place to prevent browser session timeouts. This is why we recommend deploying large files using the REST API.
A deploy query (via the REST API) might look something like this:
curl -X PUT -u myUser:myPassword -T test.txt "http://localhost:8081/artifactory/libs-release-local/test/test.txt"
A bash example can be found here.