Cisco ISA550-BUN3-K9 Integrated Security Appliance

• SMB Network Security - Protects business networks with integrated firewall and security controls.
• Branch Office Protection - Secures Internet access and network traffic at remote offices.
• Site-to-Site VPN - Connects branch offices securely over encrypted VPN tunnels.
• Remote User VPN - Provides secure access for employees working remotely.
• Dual-WAN Connectivity - Supports WAN failover and load balancing for better Internet availability.
• VLAN Network Segmentation - Separates business, guest, voice and application traffic.
• DMZ Deployment - Isolates public-facing servers and services from the internal network.
• VoIP Networks - Supports SIP/H.323 traffic with QoS for business voice services.
• Web & Application Control - Helps manage Internet usage and restrict unwanted applications.
• Centralized Security Gateway - Consolidates firewall, IPS, antivirus, VPN and UTM functions into one appliance.

• 200 Mbps Stateful Packet Inspection - Provides a clearly defined firewall capacity for moderate-traffic SMB and branch environments, helping buyers match the appliance to documented performance requirements.
• 15,000 Concurrent Connections - Gives the security gateway a defined session ceiling for networks with multiple simultaneous users, applications and Internet flows.
• 2,500 New Sessions per Second - Supports frequent connection establishment, making the platform suitable for business networks with varied application traffic.
• Zone-Based Firewall - Enables security policies between network zones, giving administrators greater control over traffic moving between trusted, untrusted and DMZ segments.
• 100 Firewall Rules - Provides a defined policy capacity for creating granular traffic-control rules without requiring a larger firewall platform.
• 60 Mbps IPS Throughput - Adds intrusion-prevention inspection at the network edge to help identify and mitigate malicious traffic.
• 50 Mbps Antivirus Throughput - Extends security inspection to antivirus processing at the gateway, helping filter malicious content before it reaches internal systems.
• 45 Mbps UTM Throughput - Provides an integrated multi-service security path when multiple inspection technologies are enabled, reducing the need for separate security appliances.

• Brand: Cisco
• Product Family: Cisco Small Business ISA500 Series
• Product Type: Integrated Security Appliance
• Model: ISA550
• SKU: ISA550-BUN3-K9
• Deployment: Wired
• Security Subscription: 3-year comprehensive security subscription
• Stateful Packet Inspection Throughput: 200 Mbps
• Maximum Concurrent Connections: 15,000
• Maximum Firewall Rules: 100
• Sessions per Second: 2,500 cps
• Zone-Based Firewall: Yes
• Denial-of-Service Protection: Yes
• IPS Throughput: 60 Mbps
• Antivirus Throughput: 50 Mbps
• UTM Throughput: 45 Mbps
• IPsec VPN Throughput: 75 Mbps
• IPsec Site-to-Site Tunnels: 25
• IPsec Remote-Access Tunnels: 10
• SSL VPN Tunnels: 10
• IPsec Encryption: DES, 3DES, AES 128/192/256-bit
• VPN Authentication: MD5, SHA-1, SHA2 256/384/512-bit
• IPsec Dead Peer Detection: Yes
• IPsec NAT Traversal: Yes
• IPsec NetBIOS Broadcast: Yes
• VPN Pass-Through: IPsec, PPTP, L2TP
• Cisco VPN Client: Supported
• Cisco AnyConnect SSL VPN Client: Supported
• Split Tunneling: IPsec and SSL VPN
• VLAN Support: 16 VLANs

Why Choose This Product?

• Right-sized SMB firewall capacity - The 200 Mbps stateful-inspection rating provides a measurable performance target for procurement teams rather than an undefined “high-performance” claim.
• One appliance, multiple security functions - Firewall, IPS, antivirus, UTM, web controls and VPN capabilities can reduce infrastructure sprawl and administrative overhead.
• Designed for wired branch environments - The ISA550 is specifically positioned in the ISA500 family as the wired moderate-performance option, while ISA570 is the higher-performance alternative.
• Useful VPN capacity for smaller organizations - Up to 25 site-to-site IPsec tunnels plus 10 IPsec and 10 SSL remote-access tunnels cover a range of branch and remote-user requirements.
• WAN resilience built in - Dual-WAN, load balancing and failover capabilities can reduce dependency on a single Internet connection.
• Network segmentation without separate hardware ? Sixteen VLANs and 802.1Q support allow logical separation of network traffic using shared physical infrastructure.
• Compact infrastructure footprint - A 1U, 308 × 180 × 49 mm chassis is practical for branch racks and constrained network rooms.
• Three-year procurement horizon - The BUN3-K9 configuration packages the ISA550 with a three-year comprehensive security subscription, helping align security-service budgeting with the hardware purchase.