| Firewall Modes & System Features |
| GB-OS Version 5.1.0 |
| 512,000 Concurrent Sessions |
| IPSec VPN With 1 Mobile Client License included |
| Stateful Packet Inspection |
| Threat Management Features |
| Secure Transparent NAT |
| Encrypted Remote Management |
| Unrestricted Concurrent User License |
| ICSA 4.1 Corporate Certified |
| Networking / Connectivity |
| PSN (DMZ) |
| Interface Bridging |
| IP Aliasing |
| IP Pass-through |
| Stealth Mode |
| Time-based Filters |
| Static Routing |
| Address Objects |
| Gateway Failover Selector [Multiple WAN Support] |
| Dynamic Gateway Architecture |
| Gateway Selector |
| PPPoE / PPP / DHCP Client / PPTP Client |
| USB GSM Modem / ISDN Support / Async Modem Support / PAP & Chap Auth |
| VLAN Tagging |
| User Authentication |
| LDAP, RADIUS and Active Directory Single Sign-On |
| Services |
| Network Time Service [NTP] |
| DHCP Server |
| Dynamic DNS |
| DNS Proxy |
| SMTP Email Proxy |
| Multiple Email Domains Supported |
| HTTP Proxy [Traditional and Transparent] |
| DNS Server |
| Traffic Management |
| Traffic Shaping(BGP, OSPF, RIP v1, v2) |
| Policy Based Routing (Source, Destination, Port/Service) |
| Bandwidth Management |
| Content Filtering |
| Local Content Lists (Allow Deny URL's) |
| Access Control Lists (Policies) |
| Block Java, Javascript, ActiveX |
| Intrusion & DoS Prevention |
| Customizable IPS Policies |
| Alarm Coalescing |
| IP Spoofing Protection |
| DoS Prevention and Alerting |
| Customizable Alarm Thresholds |
| Email and SMS Alarm Notifications |
| Logging/Monitoring |
| Remote Logging to GTAsyslog [WELF Format] |
| SNMP Management Read |
| Active VPN Tunnel Status |
