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by Juniper
Product Line: Juniper ISG Series Series
Product Type: Firewall Integrated Security Gateway
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Product Description

The NS-ISG-1000-C Juniper features four fixed 10/100/1000 interfaces and allows for expansion through two additional I/O modules as well as the integration of two security modules for IDP. It delivers firewall, 64-byte packet, and 3DES/AES performance of 1 Gbps, supports up to 250,000 concurrent sessions, and manages up to 2,000 concurrent VPN tunnels with a maximum of 512 tunnel interfaces. Designed for flexibility, it supports up to 8 OSPF and 64 BGP dynamic routing instances, includes a power supply range of 100 to 240 VAC or -36 to -72 VDC, and operates within a temperature range of 32° to 122° F, making it suitable for various networking environments.

FAQs for the NS-ISG-1000-C

  • What interfaces does the device support?
    The device supports 10/100/1000 interfaces, two additional I/O modules for interface expansion, and allows for two security modules for IDP integration.
  • Can you detail the performance specifications of the firewall?
    Firewall performance is rated at 1 Gbps, with 64-byte packet performance and 3DES/AES encryption also at 1 Gbps. It supports 250,000 concurrent sessions, 20,000 new sessions per second, and up to 10,000 policies.
  • How many VPN tunnels and tunnel interfaces does it support?
    The device supports up to 2,000 concurrent VPN tunnels and allows for up to 512 tunnel interfaces.
  • What are the routing capabilities of the device?
    It can handle up to 8 OSPF and 64 BGP dynamic routing instances, supports 10,000 static routes, and can manage 64 BGP instances with 128 peers.
  • What are the physical dimensions and weight?
    Dimensions are 5.25 inches in height, 17.5 inches in width, and 17.258 inches in length, with a weight of 30 lbs.
  • Is the device rack mountable?
    Yes, it is rack mountable in a 19” standard rack, with an optional 23” rack mount available.
  • What are the power requirements?
    The power supply can operate on AC power from 100 to 240 VAC, consuming 250 watts, and on DC power from -36 to -72 VDC.
  • What is the operational temperature range?
    The operational temperature range is from 32° to 122° F. Non-operational temperature tolerance is from -4° to 158° F.
  • How does the device manage humidity?
    The device can operate in humidity levels from 10 to 90% non-condensing.
  • What is the maximum number of concurrent sessions supported?
    It supports up to 250,000 concurrent sessions.

Product Review

The Juniper NS-ISG-1000-C offers a solid foundation for high-speed network security with its four fixed 10/100/1000 interfaces and expandability through two additional I/O modules, supporting up to two security modules for integrated IDP. However, its firewall, 3DES/AES performance, and 64-byte packet performance cap at 1 Gbps, which might not meet the requirements of networks with higher throughput needs. Additionally, while it supports a substantial number of concurrent sessions, VPN tunnels, and dynamic routing instances, its power consumption and operational temperature range could pose limitations in environments with strict energy or cooling constraints.


The Juniper NS-ISG-1000-C is a network security gateway designed to meet the demands of medium to large-sized enterprises and data centers. It integrates advanced security and networking capabilities to provide high-performance, scalable, and secure connectivity. This product overview focuses on the hardware specifications of the NS-ISG-1000-C, highlighting its main features and capabilities. At its core, the NS-ISG-1000-C includes four fixed 10/100/1000 interfaces, ensuring high-speed connectivity and data transfer rates. For organizations requiring additional interfaces, the device supports two more I/O modules, allowing for interface expansion to accommodate growing network demands. Furthermore, the NS-ISG-1000-C is engineered to support two security modules for IDP (Intrusion Detection and Prevention) integration, enhancing the security landscape of the network infrastructure it serves. Performance metrics of the NS-ISG-1000-C are notable, with firewall throughput, 64-byte packet performance, and 3DES/AES encryption throughput all rated at 1 Gbps. This ensures that security measures do not become a bottleneck in network performance. The device can handle up to 250,000 concurrent sessions, manage 20,000 new sessions per second, and support up to 10,000 policies, making it suitable for high-demand environments. - Concurrent VPN tunnels supported by the NS-ISG-1000-C reach up to 2,000, with the capability to establish up to 512 tunnel interfaces. - For dynamic routing, the device can handle up to 8 OSPF and 64 BGP instances, with static route capacity at 10,000 and BGP dynamic routing supporting 64 instances with 128 peers. - Dimensions of the NS-ISG-1000-C stand at 5.25 inches in height, 17.5 inches in width, and 17.258 inches in length, weighing 30 lbs. It is rack-mountable with standard 19-inch and optional 23-inch configurations. Power supply options include AC with a range of 100 to 240 VAC consuming up to 250 watts, and DC power supply ranging from -36 to -72 VDC, accommodating various deployment scenarios. Operational temperatures for the NS-ISG-1000-C span from 32° to 122° F, with a non-operational temperature range of -4° to 158° F. Humidity tolerance is specified at 10 to 90% non-condensing, ensuring reliable operation in a wide range of environmental conditions. The Juniper NS-ISG-1000-C is not only a high-capacity network security gateway but also a versatile and scalable solution designed for complex network environments. Its comprehensive suite of features and specifications make it an ideal choice for organizations looking to bolster their network security without compromising on performance or scalability.


Item Number Juniper NS-ISG-1000-C
Manufacturer Juniper
Base Interfaces 4 gigabit Ethernet ports
Expandable Interfaces Support for two additional interface modules
IDP Integration Capacity for two security modules
Throughput (Firewall) 1 Gbps
Throughput (64-byte packets) 1 Gbps
Encryption Throughput (3DES/AES) 1 Gbps
Maximum Sessions 250,000
Session Establishment Rate 20,000 per second
Security Policies 10,000
VPN Tunnels 2,000 concurrent
VPN Tunnel Interfaces Maximum of 512
Dynamic Routing (OSPF/BGP) Supports up to 8 OSPF and 64 BGP instances
Static Routes 10,000
BGP Sessions 64 instances, 128 peers
Physical Dimensions 5.25 x 17.5 x 17.258 inches (H/W/L)
Weight 30 lbs
Rack Compatibility 19-inch standard, 23-inch optional
AC Power Requirements 100-240 VAC, 250 watts
DC Power Specifications -36 to -72 VDC
Operating Temperature 32° to 122° F
Storage Temperature -4° to 158° F
Humidity Tolerance 10% to 90%, non-condensing

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