ISR4351-SEC/K9 Cisco ISR 4351 Security Bundle w/SEC license

Cisco ISR4351-SEC/K9 - Overview

The ISR 4351 is a 3RU modular router designed for medium to large branch offices or regional aggregation sites. It provides higher performance and expansion than the ISR4331, with dual service module slots for advanced services. The SEC bundle ensures that enterprise-grade security is enabled from the start, without requiring separate license purchases.

🔧 Key Hardware Specifications

• Form Factor: 3RU rack-mountable router
• Performance:
  • 200 Mbps default throughput
  • Upgradeable to 400 Mbps or 1 Gbps with performance licenses
• Interfaces:
  • 3x RJ45/SFP combo Gigabit Ethernet WAN/LAN ports
  • 2x NIM (Network Interface Module) slots
  • 2x SM-X (Service Module) slots
  • 1x ISC (Internal Services Card) slot
• Memory/Storage:
  • 4 GB DRAM (upgradeable to 16 GB)
  • 4 GB flash (upgradeable to 16 GB)
• Software: Runs Cisco IOS XE
• Power: Dual redundant PSU options available

SEC Bundle Features

The SEC license package enables:

• Zone-Based Firewall (ZBFW) - Stateful firewall with deep packet inspection
• VPN Services - IPsec, DMVPN, FlexVPN, SSL VPN
• Trustworthy Systems - Secure boot, image signing, runtime defenses
• Advanced Encryption - Strong cryptographic algorithms for compliance
• Integrated Security Monitoring - Syslog, SNMPv3, and NetFlow for visibility

🧩 Ideal Use Cases

• Medium to large branch offices requiring secure WAN connectivity
• Regional aggregation sites consolidating multiple branch connections
• Enterprises deploying SD-WAN with built-in security
• Organizations consolidating routing and security into a single ISR platform