The GB-2000X Firewall Appliance's powerful hardware design meets the needs of SME corporations with complex Internet connectivity and heavy network traffic demands. GTA's GB-2000X Firewall Appliance provides powerful, enterprise-level security with comprehensive features, including threat management support through Mail Sentinel Anti-Spam and Mail Sentinel Anti-Virus. The standard features of the GB-2000X include: 128,000 concurrent connections, unrestricted concurrent user licenses, unlimited network nodes, transparent NAT, stateful packet inspection, built-in IPSec VPN, gateway failover, load balancing, DCHP server, DNS server, LDAP and RADIUS support, secure remote management and content filtering in a 1-RU case. The GB-2000X standard configuration of six 10/100 Ethernet ports can be expanded to a maximum of ten Ethernet ports and VPN acceleration via two expansion slots.