UTM3: Security Gateway
Multi-Layer Firewalls from the UTMx series serve to harden networks and protect internal assets.
The concept is highly available (AEC-3) and consists of various security components:
OSI Layer 3 Stateful Packetfilter
HA: VRRP, TCP/IP Session Migration + Multipath Routing
Zeek/Bro Network Security Monitoring + NIDS
Caching Proxy Server w/ HTTP Virus Scanning
Mail VM: Spamfilter, Virus Scanning, Webmail+GPG
VPN Gateway: IPsec, OpenVPN, WireGuard
RPiX: Rasbperry Pi H/W for transparent IPSEC VPN
Mandatory Access Control (MAC)
Protection against Bruteforce + DoS Attacks
Monitoring VM: System operating data, Syslog/NetFlow visualization
Maintenance optionally including Incident Response & Forensics
A comparable security solution can also be implemented using OPNsense (FreeBSD)