Maeve

According to the FreeBSD Handbook, a firewall is “a system or network device that blocks or filters network traffic by inspecting packets and determining whether they are authorized to pass through the firewall.” FreeBSD is a Unix-like operating system based on the TCP/IP protocol suite.

It supports a variety of firewall implementations, including the Netfilter firewall and the IPsec VPN implementation. FreeBSD also includes support for the ufw firewall daemon.

A FreeBSD firewall can be used to protect the system from unauthorized access, to prevent the spread of malware, and to enforce policy restrictions on network traffic. For example, a firewall can be used to block unsolicited email messages, to restrict access to certain Web sites, or to block traffic from offending IP addresses.

A FreeBSD firewall can be configured to allow or deny traffic based on the source and destination IP addresses, the port number, or the protocol type. The firewall can also be configured to allow or deny traffic based on the type of traffic (TCP, UDP, ICMP, or IPsec).

A FreeBSD firewall can also be configured to allow or deny traffic based on the type of traffic payload (text, image, or application).

A FreeBSD firewall can be configured to use one of the following firewalling mechanisms: packet filtering, connection tracking, or stateful inspection.

A FreeBSD firewall can be configured to use the following security policies: deny all, allow all, permit specific protocols, permit specific hosts, or permit specific ports.

A FreeBSD firewall can be configured to use the following security mechanisms: user and group privileges, mandatory access control, least privilege, or role-based access control.

A FreeBSD firewall can be configured to use the following security measures: intrusion detection and prevention, event logging, or logging to a remote server.

A FreeBSD firewall can be configured to use the following security policies: deny, allow, permit, or log.

A FreeBSD firewall can be configured to use the following security measures: intrusion detection and prevention, event.