Unified Threat Management Products | GTA, Inc.
GB-250 / GB-250e
Technical Specifications

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GB-250 / GB-250e Technical Drawing

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10 or 25 Concurrent Outbound Users (Upgradeable to 50)
3 10/100 Ethernet Ports
Stateful Packet Inspection
Built-in IPSec, L2TP, PPTP VPN (Optional With GB-250 10 User License)
25 User = 5,000 - 10 User = 2,500 Concurrent Connections

System Software

Firewall Modes & System Features
GB-OS Version 6.1.6
Stateful Packet Inspection
Threat Management Features
Secure Transparent NAT
Encrypted Remote Management
Unrestricted Concurrent User License
Networking / Connectivity
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
Network Time Service [NTP]
DHCP Server
Dynamic DNS
DNS Proxy
SMTP Email Proxy
Multiple Email Domains Supported
HTTP Proxy [Traditional and Transparent]
Traffic Management
Traffic Shaping(OSPF, RIP v1, v2)
Policy Based Routing (Source, Destination, Service/Port))
Bandwidth Management
Content Filtering
Local Content Lists (Allow Deny URL's)
Access Control Lists (Policies)
Block Java, Javascript, ActiveX
Intrusion & DoS Prevention
Alarm Coalescing
Customizable IPS Policies
Customizable Alarm Thresholds
Email and SMS Alarm Notifications
IP Spoofing Protection
DoS Prevention and Alerting
Remote Logging to GTAsyslog [WELF Format]
SNMP Management Read
Active VPN Tunnel Status


IPSec VPN Standard (option on GB-250 10 user version)
IPSec Mobile VPN Client with 2 licenses (option on GB-250 10 user version)
GTA SSL VPN Client with 2 licenses (option on GB-250 10 user version)
LT2P Remote Access Support (option on GB-250 10 user version)
PPTP Remote Access Support (option on GB-250 10 user version)
Internet Key Exchange (IKE)
VPN Certificate or Pre-shared Secret Authentication
NAT-T Support
Hardware VPN Acceleration (GB-250e)
Outbound Access Control
Remote Network Access Control
Outbound Access Control
Inbound Access Control
Manual Key Exchange
Mobile VPN Client Support
Full Strength Encryption
DES, 3DES, AES, Blowfish, Camellia
SHA-1, SHA-2 and MD5 Digital Signatures


256 MB RAM
512 MB Flash Memory
3 10/100 NICs
DB-9 Serial Interface
2 USB Interface


1" h x 6.5" w x 6.5" d
(2.1cm x 16.5cm x 16.5cm)
2.0 lbs (.9 kg)


External Transformer Type
12VDC 800mA
Australia 240 VAC / 50 Hz
Europe 230 VAC / 50 Hz
Japan 100 VAC / 50-60 Hz
North America 120 VAC / 60 Hz
UK 230 VAC/ 50 Hz


Mail Proxy Anti-Spam Subscription Option
Mail Proxy Anti-Virus Feature
Web Content Filtering Subscription Option
Additional Mobile IPSec VPN Client Licenses
Additional Mobile GTA SSL VPN Client Licenses
IPSec VPN including 1 Mobile VPN Client (Option on GB-250 10 User)

Copyright © 2014 Global Technology Associates, Inc. All rights reserved.

'GB-OS' and 'GB-Ware' are registered trademarks of Global Technology Associates, Incorporated.
'Global Technology Associates' and 'GTA' are service marks of Global Technology Associates, Incorporated.