Cisco ASA5520 | ASA 5520 Adaptive Security Appliance

Technical Specifications:
- Firewall throughput: Up to 450 Mbps
- VPN throughput: Up to 225 Mbps
- Concurrent sessions: Up to 280,000
- Maximum number of VLANs: 150
- Maximum number of virtual interfaces (VLANs + others): 200
- Security contexts: Up to 2 (upgradeable to 10)
- Maximum number of users: 10,000
- Interfaces: 4 Gigabit Ethernet, 1 Fast Ethernet, 1 Management
- VPN support: IPsec, SSL, L2TP, PPTP
- Authentication: RADIUS, TACACS+, LDAP, Kerberos, NTLM, Digital certificates
- Content security: Anti-virus, anti-spyware, file blocking, anti-spam, URL filtering
- High availability: Active/standby failover, active/active failover

Helpful Notes:
- The ASA5520 is a versatile and reliable security appliance suitable for medium to large enterprises.
- Its support for multiple VPN protocols and authentication methods make it a good choice for remote access.
- The device can be upgraded to support more security contexts, allowing for better segmentation of network traffic.