Nessus Offline: Registration Hot

dpkg -i Nessus-10.x.x-ubuntu.deb

: Elias ran the command nessuscli fetch --challenge on the isolated server. It spat out a long string of alphanumeric gibberish—the server’s unique fingerprint. nessus offline registration hot

You need a temporary "bridge" machine that has internet access. dpkg -i Nessus-10