Which technologies are commonly associated with firewalls?

Which technologies are commonly associated with firewalls?

• A. Bastion Host, DMZ, Proxies, NAT, VPN(tunnel), and Honeypot
• B. Routers and switches only
• C. Antivirus and antimalware
• D. Wireless access points only

Answer: (A)

Firewalls sit at the network boundary and are commonly deployed with a set of related technologies that help enforce access control and monitor traffic crossing the boundary. A bastion host is a hardened system placed in a strategically exposed position, often inside a DMZ, to securely handle traffic between the trusted and untrusted networks while keeping internal systems protected. The DMZ itself provides a buffer zone where publicly accessible services can run without directly exposing the internal network, making it easier to enforce strict controls on what can reach internal hosts. Proxies act as intermediaries that filter and inspect traffic at the application or session level, adding another layer of policy enforcement before traffic reaches internal resources. NAT translates private addresses to public ones, helping to conceal internal topology and control how internal hosts are reachable from outside, which is a common function in firewall-enabled networks. VPN tunnels enable secure, encrypted connections for remote users or sites to access the network through the firewall, maintaining confidentiality and integrity of traffic across untrusted networks. Honeypots are used as decoys to attract attackers and gather information about attack methods, which complements firewall and intrusion detection efforts by providing insights for strengthening perimeter defense. While routers and switches are essential for directing and segmenting traffic, they aren’t specifically firewall technologies. Antivirus and antimalware protect individual endpoints, not the network boundary, and wireless access points provide connectivity rather than firewall services.

Firewalls sit at the network boundary and are commonly deployed with a set of related technologies that help enforce access control and monitor traffic crossing the boundary. A bastion host is a hardened system placed in a strategically exposed position, often inside a DMZ, to securely handle traffic between the trusted and untrusted networks while keeping internal systems protected. The DMZ itself provides a buffer zone where publicly accessible services can run without directly exposing the internal network, making it easier to enforce strict controls on what can reach internal hosts.

Proxies act as intermediaries that filter and inspect traffic at the application or session level, adding another layer of policy enforcement before traffic reaches internal resources. NAT translates private addresses to public ones, helping to conceal internal topology and control how internal hosts are reachable from outside, which is a common function in firewall-enabled networks. VPN tunnels enable secure, encrypted connections for remote users or sites to access the network through the firewall, maintaining confidentiality and integrity of traffic across untrusted networks.

Honeypots are used as decoys to attract attackers and gather information about attack methods, which complements firewall and intrusion detection efforts by providing insights for strengthening perimeter defense. While routers and switches are essential for directing and segmenting traffic, they aren’t specifically firewall technologies. Antivirus and antimalware protect individual endpoints, not the network boundary, and wireless access points provide connectivity rather than firewall services.