Fingerprinting VPN firewalls is possible with which of the following tools?

Angry IP is a general-purpose IP and port scanner with no capability to interpret IKE protocol responses or fingerprint VPN devices.

Nikto is a web server vulnerability scanner that probes HTTP/HTTPS services and has no functionality for VPN or IKE protocol analysis.

Ike-scan sends IKE Phase 1 packets to target hosts and analyzes the responses, including vendor IDs and transform sets, to identify the specific VPN product and version in use. Because IKE is the handshake protocol underlying IPsec VPNs, ike-scan directly targets the VPN negotiation layer. This makes it uniquely suited for fingerprinting VPN firewalls compared to generic network scanners.

Arp-scan operates at Layer 2 to discover hosts on a local network segment using ARP and cannot interact with or fingerprint VPN firewall services.