What advanced security features can be incorporated into a firewall?

Advanced security features that can be incorporated into a firewall include intrusion detection and prevention systems (IDPS), which monitor and block suspicious activities; deep packet inspection (DPI) for analyzing the contents of network packets to identify threats; and application-layer filtering to control access based on specific applications rather than just ports. Additionally, firewalls can integrate threat intelligence feeds to stay updated on emerging threats and employ virtual private network (VPN) support for secure remote access. Multi-factor authentication (MFA) can also enhance security by adding an extra layer of verification for users accessing the network.