Topic: Nessus Scanner Problem

Hello all expert network administrator, i have install nessus scanner on my openbsd gateway but i follow the man page also cannot successful scan a party.

Below is my command:

nessus -T text -q -x 80 nicholas_tse 1234 /var/log/ /var/log/nessus.result

The command return no this host.

Any help is greatly appreciated by me and others.