Features:
Stateful Inspection Firewall
Access Control Lists (ACLs),
Network Address Translation/Port Address Translation (NAT/PAT),
Lock-and-Key security, dynamic ACLs, and router and route authentication
Cisco Intrusion Detection System (IDS)
Hardware-accelerated IPSec 3DES encryption
Cisco Easy VPN Remote
URL Filtering with WebSENSE software and server*
IPSec NAT Transparency (NAT Traversal or NAT Aware IPSec)
PKI support with digital certificates
IP QoS-Low-latency queuing, Weighted Random Early Detection, committed access rate (CAR), Class-Based Traffic Shaping
Asynchronous Transfer Mode (ATM) QoS (for Cisco 837)-ATM Traffic UBR, VBRnrt, VBRrt, and CBR with per-VC queuing and traffic-shaping
High-performance encryption
IP Multicast technology
Cisco Router Web Setup Tool
Supported by Cisco VPN Solution Center, CiscoWorks VPN/Security Management Solution (VMS) and Cisco Secure Policy Manager
*Features targeted for future Cisco IOS Software Release
Default DRAM1 Memory 32MB
Maximum DRAM Memory 48MB
Default Flash1 Memory 12MB
Maximum Flash Memory 24MB