Full English Description for Cisco ISA3000-4F-K9 (Official PID: ISA3000-2C2F-K9)
1. Official Short Order Description
Cisco ISA3000-4F-K9 (official full PID: ISA3000-2C2F-K9): Fanless DIN-rail rugged industrial next-generation Secure Firewall (OT/Industrial Security Appliance), factory pre-installed permanent Security Plus K9 unrestricted license, hybrid 2×10/100/1000 Gigabit copper RJ45 + 2×Gigabit SFP fiber data ports, dedicated out-of-band Gigabit management port, wide-temperature hardened industrial hardware, dual wide-range DC power input terminals, dual OS support for ASA OS and Firepower Threat Defense (FTD). Powered by Cisco Adaptive Security Algorithm + embedded Firepower threat defense, it delivers full hardware-accelerated DES/3DES/AES IPsec/DMVPN/FlexVPN, AnyConnect SSL/DTLS remote access VPN, native OT protocol inspection, AVC application visibility & control, integrated NGIPS intrusion prevention, NAT/PAT, unlimited TLS proxy for unified communications VoIP/SCCP inspection, multi-context virtual firewalls, and dual-mode Active/Standby & Active/Active stateful failover. Performance metrics: up to 2 Gbps maximum stateful firewall throughput, 250,000 maximum concurrent TCP/UDP connections, 250 Mbps hardware-accelerated 3DES/AES VPN throughput, supporting 250 site-to-site IPsec tunnels, 250 AnyConnect remote access peers and 100 logical routed VLAN interfaces under K9 license. Managed via local ASDM GUI, serial console, Cisco Security Manager (CSM), Firepower Management Center (FMC) and Cisco Defense Orchestrator (CDO). Active mainstream industrial security hardware with full long-term industrial lifecycle support, designed for power substations, factory automation, ITS traffic control and long-distance fiber inter-site industrial segmentation.
2. Complete Detailed Product Overview
Product Line Positioning
The Cisco ISA3000-2C2F-K9 (market shorthand ISA3000-4F-K9) is the fiber-capable fanless rugged DIN-rail industrial security appliance in the ISA3000 series portfolio, positioned alongside all-copper ISA3000-4C-K9 and high-port-density ISA3000-8C-K9 models. Its core differentiator is a hybrid 2 copper + 2 SFP fiber port layout, enabling long-distance fiber backbone interconnections between industrial sites, power substations and remote factory cells without extra media converters. Purpose-built to withstand extreme temperature, vibration, shock and electrical EMI interference that standard office ASA rack firewalls cannot tolerate, fully compliant with NERC-CIP, IEC 62443, ISA99 and IEC 61850 industrial cybersecurity standards.
The K9 suffix represents factory pre-activated full Security Plus unrestricted license bundle, removing all weak DES-only encryption limitations of base DES SKUs, unlocking expanded VLAN capacity, unlimited TLS proxy sessions, multi-context virtual firewalls and dual-mode high availability. The ISA3000 series remains active sale with long industrial lifecycle support, no formal End-of-Sale date announced by Cisco.
Physical Hardware & Rugged Fanless Industrial DIN-Rail Architecture
Form Factor & Mechanical Specs
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Compact box fanless convection cooling, zero moving parts for ultra-long MTBF industrial deployment, DIN rail mounting brackets pre-installed, dimensions 11.2cm (W) × 13cm (H) × 16cm (D), total weight 1.9kg.
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Extreme industrial operating temperature range:-40°C to +70°C, conformal coated circuit boards, IP40 dust ingress protection, certified for shock/vibration per IEC 60068-2, surge and EMI immunity for power substation environments.
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Dual wide-range DC power input screw terminals: Supported 9.6–60VDC (nominal 12V / 24V / 48V industrial power supplies), total maximum power consumption 24W, no internal AC power supply (industrial DC-only design).
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Front panel multi-color industrial LED indicators: Power, System Health, Firepower Services status, failover state, per-port link & activity alarm triggers.
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Integrated physical security lock slot to prevent unauthorized chassis opening.
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Hardware core: Single multi-core industrial-grade security processor, fixed 8 GB DDR4 soldered SDRAM, 8 GB onboard system flash, 64 GB rugged self-encrypting mSATA SSD for ASA OS, FirePOWER threat rule databases, configuration files and persistent event log storage; optional 1GB removable industrial SD card slot for log expansion.
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Dual rear USB 2.0 Type-A ports for external flash configuration backup, firmware image upload and log offloading.
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Dedicated 2-pin alarm I/O terminal block: 2 dry-contact alarm input channels, 1 Form C relay alarm output for integration with industrial site monitoring SCADA systems.
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Environmental compliance: IEC 61850-3 power substation, IEC 1613, NERC-CIP, ISA99/IEC62443 industrial cybersecurity, IEEE 1588v2 PTP precision time protocol synchronization support.
Rear Panel Fixed Port Layout
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Hybrid Data Port Group (2 Copper + 2 SFP Fiber)
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2 × 10/10/1000 Gigabit Auto-MDI/MDIX RJ45 copper ports for local OT control LAN segments
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2 × Gigabit SFP fiber slots supporting SFP SX/LX/LR transceivers for long-distance inter-substation / inter-factory fiber uplinks
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Management0/0: Dedicated standalone 10/100/1000 Gigabit out-of-band management port, fully isolated from production industrial traffic for secure device administration and Firepower management communication.
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Dual console ports (RJ45 serial + Mini USB), two USB 2.0 storage ports, recessed hardware factory reset pushbutton.
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Dual wide-range DC power terminal block for redundant industrial power feed fault tolerance.
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Alarm I/O terminal block for external industrial alarm sensor and relay signaling.
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DB-15 inter-chassis stateful failover serial port for redundant industrial firewall pair real-time session synchronization.
No Optional Expansion Hardware
ISA3000-2C2F-K9 is a fixed hybrid copper/fiber design with zero additional I/O expansion slots; all FirePOWER threat defense functions are embedded onboard the base security processor chipset. SFP transceivers are separately orderable accessories.
Core Performance & K9 Security Plus Full License Capabilities
Official Cisco Datasheet Performance Benchmarks
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Maximum cleartext stateful firewall throughput: 2 Gbps
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Multiprotocol real-world HTTP throughput: 1.1 Gbps
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Maximum concurrent TCP/UDP connection table entries: 250,000 (20,000 hard cap on DES base license)
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Maximum new connections per second: 25,000
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64-byte small packet forwarding rate: 800,000 packets per second
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Hardware-accelerated 3DES/AES IPsec VPN throughput: 250 Mbps
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AVC application control throughput: 1.2 Gbps
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Combined AVC + NGIPS threat inspection throughput: 600 Mbps
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Maximum simultaneous IPsec IKE security associations: 250 site-to-site tunnels + 250 AnyConnect remote access VPN peers
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Maximum logical routed VLAN interfaces: 100 independent security zones (50 VLAN hard limit on DES base license)
Exclusive K9 Security Plus License Advantages vs DES Base SKU
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Full strong encryption suite (DES / 3DES / AES 128 / 192 / 256); base DES SKU only supports weak DES encryption, incompatible with industrial regulatory compliance.
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100 logical routed VLAN interfaces vs 50 VLAN hard limit on base license.
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Unlimited TLS proxy sessions for encrypted SIP/SCCP industrial VoIP inspection; base SKU capped at 1,000 TLS proxy sessions.
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Full dual-mode high availability: Supports both stateless Active/Standby and load-balanced Active/Active inter-chassis failover; HA functionality completely disabled on base DES license.
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Up to 5 independent multi-context virtual firewalls for MSP multi-tenant industrial segmentation; virtual contexts disabled entirely on base DES license.
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Native multi-device VPN clustering and load balancing fully enabled for centralized industrial remote access aggregation.
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2 permanent base AnyConnect Premium SSL/DTLS remote access seats, expandable via separate AnyConnect Plus/Apex subscription licenses.
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Unlimited internal industrial host endpoints with no session throttling or host count limits.
Full Integrated Security & Networking Feature Suite (ASA OS / Firepower Threat Defense OS)
1. Stateful Adaptive Security Algorithm Firewall
Full stateful TCP/UDP connection tracking to eliminate stateless filter bypass risks, object-group based ACL policy management for granular OT traffic segmentation rules. Multi-layer industrial-grade DDoS mitigation: SYN flood suppression, port scan detection, full TCP normalization, malformed packet filtering, source IP anti-spoof URPF strict/loose mode. Specialized Layer 7 OT protocol fixup inspection engines for industrial control protocols: Modbus TCP, DNP3, CIP/IP, IEC 61850 MMS, Siemens S7, Rockwell DF1, Omron FINS, plus standard enterprise FTP, H.323, SIP, SCCP, RTSP, NetBIOS for VoIP and multimedia workloads. Native Transparent Layer 2 firewall mode for inline industrial control network deployment without re-addressing existing SCADA IP ranges. Embedded FirePOWER Next-Generation IPS (NGIPS) with AVC application visibility & control, URL category filtering, malware sandboxing and threat correlation, no separate expansion blades required.
2. Standards-Based Multi-Protocol VPN Suite
Site-to-site IPsec tunnels for secure inter-substation private backbone connectivity over public broadband internet. Legacy IPsec remote access VPN compatibility for older Cisco VPN Client deployments. Clientless SSL VPN + AnyConnect Premium SSL/DTLS remote access for browser and full-client global industrial technician connectivity. Dual IKEv1/IKEv2 key exchange protocol support, full X.509 digital certificate SCEP auto-enrollment for scalable multi-site industrial deployments. GRE tunnel encapsulation for routed non-IPsec traffic across distributed DMVPN industrial VPN fabrics. Dedicated on-board hardware crypto acceleration to eliminate CPU bottlenecks for 250 concurrent IPsec tunnels. Native multi-chassis VPN clustering and load balancing for centralized regional industrial remote access hub aggregation.
3. Industrial & Broadband Routing & NAT Services
Static one-to-one NAT, dynamic NAT pools, PAT overload for multi-user shared public IP addressing. Native PPPoE client support for remote industrial site broadband ISP aggregation. Local DHCP server supporting up to 1024 internal IP address leases for wired LAN endpoints. Static routing, policy-based routing (PBR), BGP, OSPF, EIGRP dynamic interior/exterior routing protocol support. Dual-stack IPv4 primary architecture with limited partial IPv6 functionality available on latest ASA/FTD OS releases. Local persistent DNS caching to reduce external DNS lookup latency and WAN bandwidth consumption for industrial IoT endpoints.
4. Unified OT Threat Defense Security Stack
Built-in signature-based IDS engine with over 25,000 industrial and enterprise threat detection rules; advanced inline NGIPS threat inspection embedded onboard without extra hardware. Automatic dynamic host blacklisting to quarantine malicious source IP addresses of compromised industrial control endpoints. Strict/loose URPF anti-spoof filtering to block forged source IP traffic in multi-tenant industrial MSP environments. Persistent local SSD event logging + remote Syslog export to centralized industrial SIEM platforms for NERC-CIP / IEC 62443 regulatory compliance audit trails. All administrative access encrypted via SSHv2 remote CLI, HTTPS ASDM web GUI, encrypted SNMPv3 secure device monitoring.
5. AAA Access Control & Audit Logging
Complete AAA authentication, authorization and accounting via external RADIUS and TACACS+ servers for segregated industrial administrative privilege control (operator / maintenance / admin tiered access). Local user credential database for standalone emergency device login without external AAA servers. Comprehensive logging architecture supporting buffered flash storage, USB flash log offloading and remote Syslog archival. SNMPv3 secure monitoring for real-time device health, throughput utilization, DC power supply fault, fanless thermal alarm, VPN tunnel status and FirePOWER threat statistics alert reporting. Industrial alarm I/O port integration to trigger external site alarms on security events or hardware faults.
6. Application-Aware Hierarchical QoS Bandwidth Management
Four-level traffic priority queuing to prioritize real-time industrial SCADA control traffic and voice/video unified communications over streaming media, SaaS applications and P2P file-sharing background traffic. Per-port bandwidth shaping and policing applied to all copper and SFP fiber WAN/LAN/DMZ interfaces to eliminate industrial network congestion and guarantee OT control traffic bandwidth. DSCP marking preservation across IPsec and SSL VPN tunnels for consistent end-to-end industrial QoS policy enforcement across DMVPN hub-spoke architectures.
Management & Configuration Tools
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ASA CLI Console: Full IOS-style command-line interface via serial or Mini USB console, or encrypted SSHv2 remote access for bulk scripting and advanced industrial OT troubleshooting.
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ASDM Embedded Web GUI: Local HTTPS graphical device manager for single-chassis visual configuration, real-time traffic dashboards, VPN tunnel monitoring and unified security event reporting.
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Cisco Security Manager (CSM): Centralized enterprise policy management platform for bulk multi-site ISA deployment orchestration, mass firmware upgrades and cross-device compliance reporting.
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Firepower Management Center (FMC): Dedicated centralized management for FirePOWER NGIPS rule sets, AVC application policies, malware sandboxing and URL filtering threat intelligence updates.
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Cisco Defense Orchestrator (CDO): Cloud-hosted multi-device management for distributed industrial ISA fleets across wide geographic regions.
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TFTP + USB flash dual methods for OS firmware image upload and full configuration backup/restore; offline config editing supported.
Key Differentiators vs Related ISA 3000 Platforms
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vs ISA3000-2C2F-K8 DES Base License: Full unrestricted 3DES/AES strong encryption, expanded VLAN/session capacity, multi-context virtual firewalls and dual-mode Active/Standby + Active/Active stateful failover enabled; K8 lacks compliance-grade encryption and high availability functionality.
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vs ISA3000-4C-K9 All-Copper Variant: Hybrid 2 copper + 2 SFP fiber port design supporting long-distance fiber uplinks; 4C-K9 is all-copper with no fiber slot hardware.
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vs ISA3000-8C-K9 8-Port Copper Model: Fewer total data ports (4 total vs 8), built-in SFP fiber slots for inter-site fiber backhaul, lower port density for all-copper factory deployments.
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vs ASA5506H-X Hardened Office Firewall: Native industrial DIN rail mounting, -40~70°C temperature range, IEC 61850 power substation certification, dedicated industrial alarm I/O terminals, full OT protocol inspection engine, fanless pure industrial OT-focused design.
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vs ASA5508-X-K9 Rack-Mount Enterprise NGFW: Rugged industrial conformal coating, extreme temperature rating, DIN rail form factor, OT protocol support, DC industrial power input, alarm I/O ports, no AC power supply support, lower throughput (2 Gbps vs 1 Gbps on 5508-X).
Typical Industrial Deployment Scenarios
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Power substation edge security gateway fully compliant with IEC 61850 and NERC-CIP standards, using SFP fiber ports for long-distance inter-substation fiber backbone links.
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Remote factory automation branch security firewall establishing site-to-site DMVPN IPsec fiber backhaul to central enterprise industrial data center.
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Intelligent traffic control (ITS) roadside industrial firewall with fiber uplink to city traffic management central office.
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Small industrial MSP multi-tenant colocation boundary security appliance with independent multi-context virtual firewalls for separated customer OT network traffic segmentation.
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Redundant Active/Active chassis pair for zero-traffic-loss disaster recovery continuity in critical power, water treatment and manufacturing industrial infrastructure.
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Industrial OT network training lab platform for DIN-rail firewall fiber uplink deployment, OT protocol filtering, FirePOWER NGIPS and long-distance DMVPN fiber VPN architecture learning.
3. Short Marketing Summary
Cisco ISA3000-4F-K9 (ISA3000-2C2F-K9) Fanless Rugged DIN-Rail Hybrid 2Copper+2SFP Fiber Industrial Next-Generation Secure Firewall, active Cisco ISA3000 series Security Plus unrestricted K9 OT security appliance with 2×Gigabit RJ45 copper + 2×Gigabit SFP fiber data ports, dedicated out-of-band Gigabit management port, dual wide-range DC industrial power input terminals, alarm I/O terminal block, embedded Firepower NGIPS threat defense, runs ASA OS or Firepower Threat Defense firmware. K9 license delivers full DES/3DES/AES strong encryption, unlimited internal host capacity, stateful SPI firewall, industrial OT protocol inspection, IPsec site-to-site/AnyConnect SSL remote access VPN, inline hardware NGIPS intrusion prevention, AVC application visibility & control, NAT/PAT, PPPoE broadband client, unlimited TLS proxy for VoIP/SCADA communications, multi-context virtual firewalls and dual Active/Standby/Active/Active stateful failover with native multi-device VPN clustering. Up to 2 Gbps cleartext firewall throughput, 250,000 concurrent TCP/UDP connections and 250 simultaneous IPsec VPN tunnels, managed via local ASDM GUI, serial console, Cisco Security Manager and Firepower Management Center. Active industrial OT security NGFW for power substations, remote factory automation sites and ITS traffic control infrastructure requiring long-distance fiber inter-site segmentation.
4. Product Catalog Keyword Tags
Cisco, ISA3000-4F-K9, ISA3000-2C2F-K9, ISA 3000 Series Fanless Rugged DIN-Rail Hybrid Copper/Fiber Industrial Next-Generation Firewall, Active OT Stateful Inspection NGFW, Conformal Coated Industrial Hardware, Wide Operating Temperature -40°C ~ +70°C, IP40 Dust Ingress Protection, IEC 61850-3 / IEC 1613 / NERC-CIP / ISA99 Industrial Certified, Fanless Convection Cooling Zero Moving Parts, DIN Rail Mount Chassis, Single Multi-Core Industrial Security Processor, 8192 MB DDR4 SDRAM, 8 GB System Flash, 64 GB Self-Encrypting mSATA SSD, Optional 1GB Industrial SD Log Card, 2 × 10/100/1000 Gigabit Copper RJ45 Ports, 2 × Gigabit SFP Fiber Slots, Dedicated Gigabit Out-of-Band Management 0/0 Port, Dual Console Ports (RJ45 Serial + Mini USB), Dual USB 2.0 Storage Ports, Alarm I/O 2 Input / 1 Form C Relay Output Terminal Block, Dual Wide-Range DC Power Input Terminals (9.6–60VDC), DB-15 Inter-Chassis Stateful Failover Serial Port, Cisco Adaptive Security Algorithm ASA / Firepower Threat Defense FTD Dual OS Support, Stateful Packet Inspection SPI, 2 Gbps Max Cleartext Firewall Throughput, 1.1 Gbps Multiprotocol HTTP Throughput, 250 Mbps Hardware-Accelerated 3DES/AES VPN Throughput, AVC Application Control Throughput 1.2 Gbps, Combined AVC+NGIPS Threat Throughput 600 Mbps, IPsec IKEv1/IKEv2 DMVPN Site-to-Site & AnyConnect SSL/DTLS Remote Access VPN, Full DES/3DES-AES Unrestricted Strong Encryption Suite, Embedded Built-In FirePOWER NGIPS Intrusion Prevention System, Industrial OT Protocol Fixup (Modbus / DNP3 / CIP / IEC61850 / S7), NAT PAT Static Dynamic Address Translation, PPPoE DSL Broadband Aggregation Client, VoIP H.323 SIP SCCP Skinny Fixup Inspection, Transparent Layer 2 Firewall Mode, Multi-Context Virtual Firewall Segmentation (Up to 5 Independent Contexts), Active/Standby & Active/Active Dual-Mode Stateful Failover Redundancy, Native Multi-Device VPN Clustering & Load Balancing, 100 Logical Routed VLAN Maximum (Security Plus K9 License), 250 Max Simultaneous IPsec VPN Peers, Unlimited TLS Proxy UC Sessions, 250,000 Concurrent TCP/UDP Connections, IEEE 1588v2 PTP Precision Time Protocol Supported, ASDM Adaptive Security Device Manager Embedded Local Web GUI, Cisco Security Manager CSM Centralized Multi-Industrial-Site Policy Orchestration, Firepower Management Center FMC Threat Rule Centralized Control, Cisco Defense Orchestrator CDO Cloud Multi-Device Management, Syslog SNMPv3 Secure Monitoring, Dual-Stack IPv4 / Limited Partial IPv6 Native Support, Application-Aware Hierarchical QoS Scheduling, NEBS Level 3 Industrial Telecom Certified, FIPS 140-2 Level 1 Industrial Certified, Still Active Sale & Full Cisco Technical Support, Security Plus K9 Unrestricted Upgrade Over ISA3000-2C2F DES Base License, Predecessor to Next-Generation ISA Industrial Secure Firewall Series, Power Grid Substation IEC61850 Compliant Fiber Uplink OT Security Gateway, Remote Factory Automation DMVPN Fiber Backhaul DIN-Rail NGFW, ITS Intelligent Traffic Control Roadside Industrial Fiber Firewall, Small Industrial MSP Multi-Tenant Colocation Boundary Hybrid Copper/Fiber Rugged Security Appliance
Naming Rule Explanation
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ISA: Industrial Security Appliance, Cisco dedicated OT industrial firewall product line built for power, manufacturing, transportation and substation control network environments.
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3000: Product series generation (ISA3000 fanless rugged DIN-rail industrial firewall platform).
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4F / 2C2F: Market shorthand ISA3000-4F-K9; official full PID suffix 2C2F means 2 Copper + 2 Fiber SFP data ports (total 4 data interfaces).
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K9: Premium unrestricted Security Plus license identifier unlocking full 3DES/AES strong encryption, expanded concurrent session/VLAN capacity, unlimited TLS proxy sessions, multi-context virtual firewalls and dual-mode Active/Standby + Active/Active stateful failover; contrasted with K8 base DES-only restricted license.
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Hardware Distinction Note: The ISA3000-2C2F-K9 (market name ISA3000-4F-K9) is the only fiber-capable fixed chassis in the ISA3000 industrial firewall lineup, ideal for long-distance fiber inter-site industrial deployments where all-copper ISA3000-4C-K9 cannot meet distance requirements. This platform remains active-sale current Cisco hardware with ongoing firmware feature development, threat signature updates and full official TAC technical support available.
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