Which of the following is a client-server tool utilized to evade firewall inspection?

tcp-over-dns is a client-server tunneling tool that encapsulates TCP payloads within DNS protocol packets, exploiting the fact that most firewalls and perimeter devices allow outbound DNS (UDP/TCP port 53). Because the traffic appears as legitimate DNS communication, deep-packet firewall inspection is evaded. A DNS server component decapsulates and forwards the traffic on the attacker-controlled side.

Kismet is a wireless network detector and packet sniffer, not a tool for tunneling traffic through firewalls.

Nikto is a web server vulnerability scanner, not a firewall evasion or tunneling tool.

hping is a packet crafting and port scanning utility; while it can manipulate packets, it is not a client-server DNS tunneling tool designed specifically for firewall evasion.