Cisco Secure Firewall ISA3000 Data Sheet

Data Sheet

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Updated:July 11, 2021

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Updated:July 11, 2021


Developed specifically to withstand the harshest industrial environments, these industrial firewalls offer uncompromising end-to-end security with industrial design and operation in mind.

Product overview

The Cisco® Secure Firewall ISA3000 is a true industrial firewall that provides OT-targeted protection based on proven enterprise-class security.

The ISA3000, with four data links, is a DIN rail mount, ruggedized appliance that provides the widest range of access, threat, and application controls for the harshest and most demanding industrial environments.

Cisco ISA 3000 with two copper and two fiber ports (left) or four copper ports (right)

Figure 1.               

Cisco Secure Firewall ISA3000 with two copper and two fiber ports (left) or four copper ports (right)

The ISA3000 bundles the proven security of the Cisco Secure Firewall with the visibility and control of industrial protocols and applications developed by leading automation vendors such as Omron, Rockwell, GE, Schneider, Siemens, and others. The ISA3000 is key as you start converging IT and OT security and capturing the benefits of your industrial digitization efforts.

As a foundational component of your IoT/OT security journey, the ISA3000 is the ideal ruggedized firewall to segment industrial networks, protect OT assets from potential threats, and build compliance with a variety of industrial standards, regulations, and guidelines such as NERC-CIP, ISA99/IEC62443, CFATS, ANSI/AWWA G430, and others.

Certified for deployment in the most demanding industries (power utilities, oil and gas, transportation, mining, manufacturing, water utilities, and more), the ISA3000 is widely used as a DMZ firewall to connect small, distributed industrial sites, enforce segmentation of large internal networks, and manage VPN connections to enable secure management of remote assets and seamless distributed operations.

The ISA3000 protects industrial processes and vulnerable control equipment. It leverages industry-leading threat detection and vulnerability exploit protection rules developed by Cisco Talos®, including thousands of industrial-focused rules. Using OpenAppID and Deep Packet Inspection (DPI) of industrial protocols, it even lets you write your own custom detectors to create alerts and block or allow traffic based on the industrial application flows you most care about. Cisco Advanced Malware Protection (AMP) is also built in to continuously track suspect file propagation.

Managed through either a user-friendly on-box device manager, on-premises centralized management, or a cloud-based management solution, the ISA3000 provides industrial-focused, out-of-the-box configuration and simplified operational management. And because these management tools are the same you already use with Cisco firewalls in your IT domain, it is easy to extend IT security to OT and enforce consistent security policies across domains.

As part of Cisco’s comprehensive security portfolio, the ISA3000 interacts with your existing tools to deliver an integrated IT/OT security workflow. Cisco Cyber Vision provides host attribute information to enable construction of meaningful and contextual security policies. Cisco Identity Services Engine (ISE) can be leveraged to exchange unified policy updates as well as host context information using Security Group Tags (SGTs) for security enforcement. The ISA3000 can also exchange NetFlow information with Cisco Stealthwatch® to provide network-level context information. The ISA3000 provides insights and alerts to Cisco SecureX to streamline event triage and correlation, enabling coordinated, single-click defenses.

With the ISA3000, you can build a secure IoT/OT infrastructure and leverage your existing IT security tools and expertise to help ensure production integrity, continuity, and safety.

Your ruggedized choice for industrial firewall deployments

The Cisco Secure Firewall ISA3000 offers:

     Controlled traffic to, from, and between manufacturing cells or industrial zones

     Secured WAN connectivity for power substations and isolated industrial assets

     Flexible and secure enterprise-class remote access

     Critical network infrastructure services such as IP routing, NAT, DNS, DHCP, and more

     Unequaled threat protection for every level of networking and computing — from the switch, router, OS, and compute infrastructure to industrial control systems

     Wide support for industrial protocols for visibility and control over every level of your applications in both the industrial and enterprise space

     More levels of traffic continuity safety than other offerings in the industrial space

     Common Criteria for IT security certification.

Table 1.           General capabilities of Cisco Secure Firewall ISA3000



Robust industrial design

  Built for harsh environments and temperature ranges (-40° to 158°F; -40° to 70°C)
  Hardened for vibration, shock, surge, and electrical noise immunity
  Four Gigabit Ethernet uplink ports, providing multiple resilient design options (4 copper or 2 copper plus 2 fiber)
  Complies with multi-industry specifications for industrial automation, Intelligent Transport Systems (ITS), and electrical substation environments
  Improves uptime, performance, and safety of industrial systems and equipment
  Compact DIN rail unit design with industrial LED features, allowing easy monitoring
  Fanless and convection cooled with no moving parts for extended durability
  IEEE 1588v2 Precision Time Protocol (PTP) clock synchronization (default profile is supported)
  Alarm I/O for monitoring and signaling to external equipment.

User-friendly GUI device manager

  On-device management for local awareness and immediate control using Cisco Firepower ® Device Manager
  Centralized management configuration, logging, monitoring, and reporting using Cisco Firepower Management Center
  Cloud-based management option available with Cisco Defense Orchestrator
  Multidevice management that handles hundreds of devices
  User-specific access and control customizations

Traffic continuity and protection

  Full “lights out” traffic bypass copper ports
  Default passive deployment learning mode
  Software updates without traffic loss
  Connection limitations to protect from denial-of-service-causing traffic
  Latency detection and mitigation functions
  Quality-of-service policies

OT and ICS protocol support

  Common Industrial Protocol (CIP) (AppID for individual CIP applications available)
  Companion Specification for Energy Metering (COSEM)
  Connection Oriented Transport Protocol (COTP)
  Distributed Network Protocol (DNP3)
  Generic Object Oriented Substation Events (GOOSE)
  Generic Substation Events (GSE)
  Emission Control Protocol
  Fujitsu Device Control
  Honeywell Control Station/NIF Server
  Honeywell Esperion DSA Server Monitor
  IEC 60870-5-104 (AppID for individual commands available)
  IEC 61850 MMS (AppID for individual commands available)
  ISO Manufacturing Message Specification (MMS)
  Omron FINS
  OPC Unified Architecture (OPC-UA)
  Siemens S7

Table 2.           Access control capabilities



Proven, extensible access control

  Enforces ISA99/IEC 62443 segmentation needs
  Stateful inspection (Layers 2 through 7)
  Transparent and routed firewall operation modes
  Provides features to enable electronic security perimeter (ESP) for NERC-CIP compliance
  Next-Generation Intrusion Prevention System (NGIPS)
  Identity-based access control policies (users, devices, SGTs, etc.)
  VPN: Remote Access, site-to-site

Application control

  Visibility and control of all DMZ infrastructure
  Visibility and control of industrial applications
  Visibility and control of individual protocol commands and values
  ICS/OT protocol visibility and/or control

Remote access enablement and control

  Network access control via Cisco AnyConnect ®
  Cisco ISE support
  Site-to-site VPN
  Remote Access VPN
  Cisco Secure Desktop
  Support for Citrix and VMware clientless connections

Multilevel access controls

  Global block lists — automated or manual
  Global allow lists
  Third-party intelligence feed utilization
  File allow lists
  File block lists
  Application-level access control
  802.1X support

Cisco TrustSec® controls

  In-band and out-of-band identity
  Active Directory integration
  Policy based on SGTs
  802.1X support
  MACsec and MAC Authentication Bypass (MAB) support
  Enforces endpoint security state for remote access

Table 3.           Intrusion detection and protection capabilities



Uncompromising threat detection and protection

  Leverages industry-leading rules developed by Cisco Talos research teams
  Over 55,000 rules, providing the widest range of protection anywhere
  Hundreds of industrial-focused rules
  Industrial equipment exploit protection rules
  Protocol abuse identification
  Protection for web-based control systems
  Network behavior analytics
  Passive device discovery

Threat network mapping

  Passive device identification
  Mobile device identification
  Application host network mapping
  Vulnerability/host network mapping
  User/host network mapping

Threat discovery

  Indicators of Compromise (IoC) tracking
  OpenAppID — open community ID system
  Correlation policies and responses
  Traffic variance detection
  Router-based remediation actions
  NetFlow tracking
  55,000+ threat identifiers
  Customizable identifiers
  Can create wholly new identifiers
  Widest identifier contributorship

File tracking

  Approved file trace
  Suspect file trace
  Malware match

Table 4.           Networking capabilities



DMZ infrastructure

  DNS services
  Dynamic Host Configuration Protocol (DHCP) services
  Authentication, authorization, and accounting (AAA) support
  IP routing (v4 and v6)

Layer 3 routing

  IPv4 static routing
  Dynamic routing (Routing Information Protocol [RIP], Enhanced Internet Gateway Routing Protocol [EIGRP], Intermediate System to Intermediate System [IS-IS], Open Shortest Path First [OSPF], and Border Gateway Protocol [BGP])

Network Address Translation (NAT)

  Static NAT
  With port translation, one-to-many, nonstandard ports
  Dynamic NAT
  Dynamic Port Address Translation (PAT)
  Identity NAT

Layer 2 IPv6

  IPv6 host support, HTTP over IPv6, Simple Network Management Protocol (SNMP) over IPv6


  802.1q trunks supported


  Local logs, syslog, Security Analytics and Logging (SAL), eStreamer, and Log in the management application
  Proven integration with leading security information and event management (SIEM) systems (QRadar, Splunk, etc.)

Clock synchronization

  IEEE 1588 (hardware-enabled PTP)

Performance specifications

Table 5.           Performance using Cisco Firepower Threat Defense (FTD)



Throughput: NGIPS (1024B)

500 Mbps

Throughput: Firewall (FW) + Application Visibility and Control (AVC) (1024B)

375 Mbps

Throughput: FW + AVC + Intrusion Prevention System (IPS) (1024B)

350 Mbps

Maximum concurrent sessions, with AVC


Maximum new connections per second, with AVC


IPsec VPN throughput
(1024B TCP with Fastpath)

50 Mbps

Maximum VPN peers


Application Visibility and Control (AVC)

Standard, supporting more than 4000 applications as well as geo locations, users, and websites

URL filtering

More than 80 categories

More than 280 million URLs categorized

Defined interfaces

200, 400 (with SecPlus license on ASA), 400 (FTD)

VLAN counts

5, 100 (with SecPlus license on ASA), 100 (FTD)

IPv4 MACsec Access Control Entries (ACEs)

1000 with default TCAM template


Bidirectional, 128 unique subnet NAT entries, which can expand to tens of thousands of translated entries if designed properly

Security feature specifications

Table 6.           Security features


Support information

Transport Layer Security (TLS) decryption


AVC: OpenAppID support for custom, open-source application detectors


Cisco security intelligence

Standard, with IP, URL, and DNS threat intelligence

Cisco Firepower NGIPS

Available; can passively detect endpoints and infrastructure for threat correlation and IoC intelligence

Cisco Secure Firewall
(formerly Cisco AMP for Networks)

Available; enables detection, blocking, tracking, analysis, and containment of targeted and persistent malware, addressing the attack continuum both during and after attacks. Integrated threat correlation with Cisco Secure Endpoint (formerly Cisco AMP for Endpoints) is also optionally available

Cisco Secure Malware Analytics
(formerly Cisco Threat Grid) sandboxing


Automated threat feed and IPS signature updates

Yes: class-leading Collective Security Intelligence (CSI) from the Cisco Talos group (

Third-party and open-source ecosystem

Open API for integrations with third-party products; Snort® and OpenAppID community resources for new and specific threats

High availability and clustering

Active/standby failover

Cisco Trust Anchor technologies

Includes Trust Anchor technologies for supply chain and software image assurance

Hardware specifications

Table 7 lists physical specifications, Table 8 lists safety standards and compliance specifications, and Table 9 gives information about networking standards.

Table 7.           Physical specifications




  4-core Intel ® Atom ® processor (industrial temp.)
  8-GB DRAM (soldered down)
  16-GB onboard flash memory
  mSATA 64 GB
  1-GB removable SD flash memory card (industrial temp.)
  Mini-USB connector for console
  RJ-45 traditional console connector
  Dedicated 10/100/1000 management port
  Hardware-based anti-counterfeit, anti-tamper chip
  Factory reset option

Alarm I/O

  Two alarm inputs to detect dry contact open or closed
  One Form C alarm output relay

Dimensions (WxHxD)

  11.2 x 13 x 16 cm (4.41 x 5.12 x 6.30 in.)


  1.9 kg (4.2 lb)

Power supply and ranges

  Dual internal DC
  Nominal: ± 12V DC, 24V DC, or 48V DC
  Maximum range: 9.6V DC to 60V DC
  Power consumption: 24W

Mean time between failures (MTBF)

  ISA-3000-4C: 398,130 hours
  ISA-3000-2C2F: 376,580 hours


ISA 3000 ports overview

Figure 2.               

Cisco Secure Firewall ISA3000 ports overview

Table 8.           Safety standards and compliance specifications



Electromagnetic emissions

FCC 47 CFR Part 15 Class A

EN 55022A Class A

VCCI Class A


CISPR 11 Class A

CISPR 22 Class A

ICES 003 Class A

CNS13438 Class A


Electromagnetic immunity





EN 61000-4-2 Electro Static Discharge

EN 61000-4-3 Radiated RF

EN 61000-4-4 Electromagnetic Fast Transients

EN 61000-4-5 Surge

EN 61000-4-6 Conducted RF

EN 61000-4-8 Power Frequency Magnetic Field

EN 61000-4-9 Pulse Magnetic Field

EN 61000-4-18 Damped Oscillatory Wave

EN-61000-4-29 DC Voltage Dips and Interruptions

IEC/AS/NZS 62368.1

Industry standards

EN 61000-6-1 Immunity for Light Industrial Environments

EN 61000-6-2 Immunity for Industrial Environments

EN 61000-6-4 Emission Standard for Industrial Environments

EN 61326 Industrial Control

EN 61131-2 Programmable Controllers

IEEE 1613 Electric Power Stations Communications Networking

IEC 61850-3 Electric Substations Communications Networking


EN 50121-3-2

EN 50121-4 

EN 50155

Safety standards and certifications

Information technology equipment:

  UL/CSA 60950-1
  EN 60950-1
  CB to IEC 60950-1 with all country deviations
  NOM to NOM-019-SCFI (through partners and distributor)

Industrial floor (control equipment):

  UL 508
  CSA C22.2, No 142
  EN/IEC 61010-2-201
  UL/CSA 61010-1

Hazardous locations:*

  ANSI/ISA 12.12.01 (Class I, Div 2 A-D
  CSA C22.2 No 213 (Class 1, Div 2 A-D)
  UL/CSA 60079-0, -15
  IEC 60079-0, -15 (IECEx test report Class I, Zone 2, group II gases)
  EN 60079-0, -15 ATEX certification (Class I, Zone 2, group II gases)

*Must meet deployment requirements such as with IP54 enclosure described in the “Product Documentation and Compliance Information for the Cisco ISA 3000”

Operating environment

Operating temperature:

-40° to +74°C (-40° to +165°F)

-40° to +70°C (-40° to +158°F) (vented enclosure operating)

-40° to +60°C (-40° to +140°F) (sealed enclosure operating)

-40° to +75°C (-40° to +167°F) (fan or blower-equipped enclosure operating)

EN 60068-2-21

EN 60068-2-2

EN 61163

Storage environment

Temperature: -40° to +85°C (-40° to +185°F)

Altitude: 0 to 15,000 ft (0 to 4572 m)

IEC 60068-2-14


Relative humidity of 5% to 95% noncondensing

IEC 60068-2-30

Ingress Protection (IP) rating


Shock and vibration

IEC60068-2-6 and IEC60068-2-27

MIL-STD-810, Method 514.4

Marine EN60945

Industrial EN61131-2/IEC61131-2

Railway EN61373 CAT 1B

Smart Grid EN61850-3

IEEE 1613


ISO 9223: Corrosion

Class C3-Medium

Class C4-High

EN 60068-2-52 (Salt Fog)

EN 60068-2-60 (Flowing Mixed Gas)


RoHS compliance

China RoHS compliance

TAA (Government)

CE (Europe)

Regulatory Compliance Mark (RCM)


5-year limited hardware warranty on all ISA3000 product IDs

See link at end of data sheet for more details on warranty

Table 9.           Networking standards



IEEE standards

  IEEE 802.1D MAC Bridges, Spanning Tree Protocol (STP)
  IEEE 802.1p Layer2 class-of-service (COS) prioritization
  IEEE 802.1q VLAN
  IEEE 802.1s Multiple Spanning-Trees
  IEEE 802.1w Rapid Spanning-Tree
  IEEE 802.1x Port Access Authentication
  IEEE 802.1AB Link Layer Discovery Protocol (LLDP)
  IEEE 802.3ad Link Aggregation (LACP)
  IEEE 802.3ah 100BASE-X single-mode fiber (SMF)/multimode fiber (MMF) only
  IEEE 802.3x full duplex on 10BASE-T
  IEEE 802.3 10BASE-T specification
  IEEE 802.3u 100BASE-TX specification
  IEEE 802.3ab 1000BASE-T specification
  IEEE 802.3z 1000BASE-X specification
  IEEE 1588v2 PTP

RFC compliance

  RFC 768: User Datagram Protocol (UDP)
  RFC 783: Trivial FTP (TFTP)
  RFC 791: IPv4
  RFC 792: Internet Control Message Protocol (ICMP)
  RFC 793: TCP
  RFC 826: Address Resolution Protocol (ARP)
  RFC 854: Telnet
  RFC 951: BOOTP
  RFC 959: FTP
  RFC 1157: SNMPv1
  RFC 1901,1902-1907 SNMPv2
  RFC 2273-2275: SNMPv3
  RFC 2571: SNMP Management
  RFC 1166: IP Addresses
  RFC 1256: ICMP Router Discovery
  RFC 1305: NTP
  RFC 1492: TACACS+
  RFC 1493: Bridge MIB Objects
  RFC 1534: DHCP and BOOTP interop.
  RFC 1542: Bootstrap Protocol
  RFC 1643: Ethernet Interface MIB
  RFC 1757: RMON
  RFC 2068: HTTP
  RFC 2131, 2132: DHCP
  RFC 2236: IGMP v2
  RFC 3376: IGMP v3
  RFC 2474: DiffServ Precedence
  RFC 3046: DHCP Relay Agent Information option
  RFC 3580: 802.1X RADIUS
  RFC 4250-4252 SSH Protocol

Ordering information

Table 10 and Table 11 show the available ISA3000 product IDs, Table 12 lists the SFP modules, and Table 13 lists the power supplies available for the ISA3000.

Table 10.       Cisco Secure Firewall ISA3000 models

Product number

Base software

Copper 10/100/1000 (all bypass enabled)

SFP fiber ports

















Table 11.       Optional orderable features

Note – Cisco Firepower Services 7.0 is the last Firepower Services release to run on Cisco ASA Firewall.

Product number


Optional orderable features (ASA+Firepower Services)


Security Plus - HA enablement, SSL VPN, greater connection count, VLAN trunking

Threat/Application subscription licenses


1 Year Subscription Threat/Application


3 Year Subscription Threat/Application


5 Year Subscription Threat/Application

Threat Defense Malware Protection licenses


1 Year Subscription Threat Defense Malware Protection


3 Year Subscription Threat Defense Malware Protection


5 Year Subscription Threat Defense Malware Protection

Threat Defense URL Filtering licenses


1 Year Subscription Threat Defense URL Filtering License


3 Year Subscription Threat Defense URL Filtering License


5 Year Subscription Threat Defense URL Filtering License

Threat Defense Threat and URL Filtering licenses


1 Year Subscription Threat Defense Threat and URL Filtering License


3 Year Subscription Threat Defense Threat and URL Filtering License


5 Year Subscription Threat Defense Threat and URL Filtering License

Threat Defense Threat and Malware Protection licenses


1 Year Subscription Threat Defense Threat and Malware Protection License


3 Year Subscription Threat Defense Threat and Malware Protection License


5 Year Subscription Threat Defense Threat and Malware Protection License

Threat Defense Threat, Malware Protection, and URL Filtering licenses


1 Year Subscription Threat Defense Threat, Malware Protection, and URL License


3 Year Subscription Threat Defense Threat, Malware Protection, and URL License


5 Year Subscription Threat Defense Threat, Malware Protection, and URL License

Optional orderable features (FTD)

Threat/Application subscription licenses


1 Year Subscription Threat/Application


3 Year Subscription Threat/Application


5 Year Subscription Threat/Application

Threat Defense Malware Protection licenses


1 Year Subscription Threat Defense Malware Protection


3 Year Subscription Threat Defense Malware Protection


5 Year Subscription Threat Defense Malware Protection

Threat Defense URL Filtering licenses


1 Year Subscription Threat Defense URL Filtering License


3 Year Subscription Threat Defense URL Filtering License


5 Year Subscription Threat Defense URL Filtering License

Threat Defense Threat and URL Filtering licenses


1 Year Subscription Threat Defense Threat and URL Filtering License


3 Year Subscription Threat Defense Threat and URL Filtering License


5 Year Subscription Threat Defense Threat and URL Filtering License

Threat Defense Threat and Malware Protection licenses


1 Year Subscription Threat Defense Threat and Malware Protection License


3 Year Subscription Threat Defense Threat and Malware Protection License


5 Year Subscription Threat Defense Threat and Malware Protection License

Threat Defense Threat, Malware Protection, and URL Filtering licenses


1 Year Subscription Threat Defense Threat, Malware Protection, and URL License


3 Year Subscription Threat Defense Threat, Malware Protection, and URL License


5 Year Subscription Threat Defense Threat, Malware Protection, and URL License

Table 12.       Supported Cisco ruggedized SFPs*

Product number



1000 BASE-SX Ruggedized


1000 BASE-LX/LH Ruggedized


100 BASE-FX Ruggedized


100 BASE-LX Ruggedized

*For the complete list of supported SFP models, please refer to
MM = multi-mode fiber
SM = single-mode fiber

Table 13.       Suggested power supply

Product number



AC to DC 24V/2.1A DIN Rail power supply, input 100-240VAC/1.25A 50-60Hz, output 24VDC/2.1A, IEC Plug


AC to DC 24V/2.1A DIN Rail power supply, input 100-240VAC/1.25A or 125-250VDC/1A, output 24VDC

Warranty information

Warranty information is available at

Cisco environmental sustainability

Information about Cisco’s environmental sustainability policies and initiatives for our products, solutions, operations, and extended operations or supply chain is provided in the “Environmental Sustainability” section of Cisco’s Corporate Social Responsibility (CSR) Report.

Reference links to information about key environmental sustainability topics (mentioned in the “Environmental Sustainability” section of the CSR Report) are provided in the following table.

Sustainability topic


Information on product material content laws and regulations


Information on electronic waste laws and regulations, including products, batteries, and packaging

WEEE compliance

Cisco makes the packaging data available for informational purposes only. It may not reflect the most current legal developments, and Cisco does not represent, warrant, or guarantee that it is complete, accurate, or up to date. This information is subject to change without notice.

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     Mitigating risks by enabling proactive or expedited problem resolution

     Lowering TCO by taking advantage of Cisco expertise and knowledge

     Minimizing network downtime

     Supplementing your existing support staff so they can focus on additional productive activities

For more information about Cisco Services, refer to Cisco Technical Support Services or Cisco Advanced Services at

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For more information

For more information about the Cisco Secure Firewall ISA3000, visit or contact your local account representative.

Document history

New or Revised Topic

Described In


Updates related to new OS version


Jan 20, 2020

New available licenses

Table 10 and Table 11

Jan 20, 2020

Reorganized feature lists


Feb 6, 2021

Updated performance data

Table 5

April 8, 2021

Updated product name


April 8, 2021

Mentioned end of Firepower Services on ASA

Table 10 and Table 11

July 7, 2021




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