The results of an Nmap scan are as follows:Which of the following would be the...

This device may be vulnerable to the Heartbleed bug due to the way transactions over TCP/22 handle heartbeat extension packets, allowing attackers to obtain sensitive information from process memory.

This device is most likely a gateway with in-band management services.

This device is most likely a proxy server forwarding requests over TCP/443.

This device may be vulnerable to remote code execution because of a butter overflow vulnerability in the method used to extract DNS names from packets prior to DNSSEC validation.