Cisco PIX-535-UR-BUN is a high-performance enterprise firewall appliance bundle from the Cisco PIX 500 Series. It is designed for large enterprise and data center environments, providing stateful firewall protection, high-capacity VPN termination, and secure network segmentation.

? KEY FEATURES

• High-end enterprise firewall appliance
• Unrestricted license (UR) for maximum scalability
• Stateful packet inspection firewall
• High-capacity IPSec VPN support
• Modular interface expansion (multiple Ethernet ports)
• Failover and high-availability support
• Hardware-based encryption acceleration
• Designed for data center and enterprise core security

⚙️ TECHNICAL SPECIFICATIONS

? Hardware Platform

• Series: Cisco PIX 500 Series
• Model: PIX 535
• Part Number: PIX-535-UR-BUN
• Product type: Enterprise firewall appliance
• Form factor: Rack-mount (2U chassis)

? Interfaces

• Modular interface slots supporting:
  • Multiple Fast Ethernet ports
  • Gigabit Ethernet (via modules)
• Console port for management
• Failover interface support

? Security Features

• Stateful packet inspection firewall
• NAT (Network Address Translation)
• Access Control Lists (ACLs)
• IPSec VPN (site-to-site and remote access)
• DES / 3DES / AES encryption
• User authentication and policy enforcement

⚡ Performance

• Firewall throughput: ~1 Gbps class
• VPN throughput: ~100–200 Mbps (hardware-assisted)
• Concurrent sessions: hundreds of thousands
• VPN peers: hundreds to thousands (unrestricted license)

? High Availability

• Active/Standby failover support
• Redundant configuration capability
• Designed for mission-critical deployments