Name: |
ASA5520-BUN-K9 |
Description: | ASA 5520 Security Appliance with SW, HA, 4GE+1FE, 3DES/AES, Cisco ASA 5500 Series Firewall Edition Bundles |
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ASA5520-BUN-K9
ASA 5520 Security Appliance with SW, HA, 4GE+1FE,...
$647.05
15 in Global Warehouse
$647.05
92% off
ASA5520-BUN-K9
ASA 5520 Security Appliance with SW, HA, 4GE+1FE,...
$647.05
7 in Global Warehouse
$647.05
92% off
TRUSTED, TRIED, PROVEN







ASA5520-BUN-K9 Overview
ASA5520-BUN-K9 is a rack-mount hardware appliance designed for mid-sized enterprise and branch office environments, delivering robust performance with a stateful inspection firewall that supports advanced security services such as IPS, antivirus, web filtering, and both IPSec and SSL VPN functionalities. Optimized for high-throughput environments, the appliance provides a reliable platform for securing network perimeters with redundant power supplies, integrated port configurations (LAN and WAN with SFP options), and the flexibility to manage deployments via CLI, GUI, or centralized management solutions.
ASA5520-BUN-K9 is engineered for scalability and high availability with active-passive clustering capabilities, making it ideal for consistent, uninterrupted operations in dynamic network settings. Its advanced architecture supports scaling from SMBs to larger enterprise networks while ensuring comprehensive threat prevention and secure connectivity, meeting diverse use cases from remote site VPN access to centralized, enterprise-grade network security.
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ASA5520-BUN-K9 Specifications
Product Type | Firewall Appliance |
Architecture | Rack-mount |
Deployment Type | Enterprise / Branch Office |
Use Case | VPN / Secure Access / UTM |
Firewall Layer Supported | Layer 3 / Layer 4 |
Power Source | AC Power Supply |
Redundant Power Supply Supported | Yes |
Firewall Throughput | 500 Mbps |
Threat Protection Throughput | 150 Mbps |
IPS Throughput | 150 Mbps |
VPN Throughput | 300 Mbps |
Supported Applications | N/A |
Centralized Configuration & Reporting | Cisco Security Manager |
Feature | Advanced threat protection, stateful inspection, VPN support |
Concurrent Sessions | 100,000 |
Maximum Concurrent Sessions | 250,000 |
Users/Nodes | Unlimited |
Integrated I/O | N/A |
New Sessions Per Second | 10,000 |
Supported VPN Types | IPSec / SSL VPN |
Routing Protocols Supported | OSPF / BGP / RIP / Static Routing |
Security Services | Antivirus / Web Filtering / IPS / VPN |
High Availability | Active-Passive |
Interfaces | RJ-45 / SFP |
WAN Ports | 2 WAN |
LAN Ports | 4 LAN Ports |
Switch Ports | No |
POE Ports | No |
Management Options | CLI / GUI / SNMP |
Logging & Monitoring | Built-in / External |
Firewall Policies Supported | Unlimited |
Users Supported | N/A |
Memory | 4 GB |
Flash Storage | 16 GB |
Expansion Slots | SFP |
Form Factor | 1 RU |
Rack Units | 1 RU |
Device Type | NGFW |
Product Name | Cisco ASA5520-BUN-K9 |
Height | 1.73 inches |
Width | 17.3 inches |
Depth | 19.5 inches |
Weight | 15 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.







Product Comparison Table
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Product Type | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance |
Architecture | Rack-mount | Desktop / Rack-mount | Rack-mount | Rack-mount | Rack-mount |
Deployment Type | Enterprise / Branch Office | Small Business / Branch Office | Branch Office / Enterprise / SMB | Enterprise / Branch Office | Enterprise / Branch Office |
Use Case | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / Advanced Threat Protection | UTM | VPN / Secure Access / UTM |
Firewall Layer Supported | Layer 3 / Layer 4 | Layer 3 / Layer 7 | Layer 3 / Layer 4 / Layer 7 | Layer 7 | Layer 3 / Layer 4 / Layer 7 |
Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
Redundant Power Supply Supported | Yes | Yes | Yes | Yes | Yes |
Firewall Throughput | 500 Mbps | 1 Gbps | 6.45 Gbps | 10 Gbps | 8 Gbps |
Threat Protection Throughput | 150 Mbps | 500 Mbps | 4.0 Gbps | 6 Gbps | 8 Gbps |
IPS Throughput | 150 Mbps | 500 Mbps | 3.2 Gbps | 5 Gbps | 8 Gbps |
VPN Throughput | 300 Mbps | 100 Mbps | 5.5 Gbps | 8 Gbps | 6 Gbps |
Supported Applications | N/A | N/A | 50 | 200 | 50 |
Centralized Configuration & Reporting | Cisco Security Manager | Yes | Yes | Centralized | Yes |
Feature | Advanced threat protection, stateful inspection, VPN support | Integrated Threat Management | Application Control, Logging, Reporting | Next-Generation Firewall, Intrusion Prevention, Application Control | High Performance, Scalable, Redundant Power |
Concurrent Sessions | 100,000 | 100,000 | 250000 | 1000000 | 200K |
Maximum Concurrent Sessions | 250,000 | 100,000 | 250000 | 1500000 | 200K |
Users/Nodes | Unlimited | 500 | Unlimited | Unlimited | Unlimited |
Integrated I/O | N/A | N/A | 8 | 4 | 8 |
New Sessions Per Second | 10,000 | 10,000 | 60000 | 20000 | 40K |
Supported VPN Types | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN |
Routing Protocols Supported | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing |
Security Services | Antivirus / Web Filtering / IPS / VPN | Antivirus / Web Filtering / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN |
High Availability | Active-Passive | Active-Passive | Active-Passive | Active-Passive | Active-Passive |
Interfaces | RJ-45 / SFP | RJ-45 / SFP | RJ-45 / SFP | RJ-45 / SFP | RJ-45 / SFP |
WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
LAN Ports | 4 LAN Ports | 4 LAN Ports | 8 LAN Ports | 4 LAN Ports | 4 LAN Ports |
Switch Ports | No | No | Yes | Yes | No |
POE Ports | No | No | No | No | No |
Management Options | CLI / GUI / SNMP | CLI / GUI / SNMP | CLI / GUI / SNMP / Centralized | Cloud / CLI / GUI / Centralized / REST API / SNMP | Cloud / CLI / GUI / Centralized / SNMP |
Logging & Monitoring | Built-in / External | Built-in / Syslog | Built-in / External / Syslog / Cloud Logging | Built-in / Syslog / Cloud Logging | Built-in / Syslog / Cloud Logging |
Firewall Policies Supported | Unlimited | N/A | 1024 | 1000 | 1000 |
Users Supported | N/A | 500 | 250000 | 50000 | Unlimited |
Memory | 4 GB | 4 GB | 8 GB | 8 GB | 8 GB |
Flash Storage | 16 GB | 16 GB | 128 GB | 64 GB | 128 GB |
Expansion Slots | SFP | N/A | SFP | SFP | SFP |
Form Factor | 1 RU | Desktop / 1 RU | 1 RU | 1 RU | 1 RU |
Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
Device Type | NGFW | NGFW | NGFW | NGFW | NGFW |
Product Name | Cisco ASA5520-BUN-K9 | SRX300 | SRX550-645DP-M | FC-10-FG1HE-179-02-DD | FG-60F-BDL-879-12 |
Height | 1.73 inches | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches |
Width | 17.3 inches | 17.3 inches | 17.5 inches | 17 inches | 17.5 inches |
Depth | 19.5 inches | 10.8 inches | 14.5 inches | 15 inches | 15 inches |
Weight | 15 lbs | 12 lbs | 13 lbs | 15 lbs | 10 lbs |
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