First, do a Google search for "Very-small-aperture terminal" (from the hint) which leads to a Wikipedia article and the acronym "VSAT".

Next, search "VSAT" on Shodan and find lots of results for `Hughes Network Systems Multimedia VSAT`.

*Optional: Narrow search by "port:161" (SNMP). You may need a Shodan account to do this.*

Finally, click on the IP address for each result and find one that has "Vulnerabilities" listed on the left.
In details for many of the `Hughes Network Systems Multimedia VSAT`, find under 'Vulnerabilities':

**CVE-2018-19052**

Flag: jctf{CVE-2018-19052}