Management
Out-of-band management with ISDN S/T port or external modem through a virtual auxiliary port on models supporting those interfaces
Cisco Security Manager
Telnet, Simple Network Management Protocol Version 3 (SNMPv3), Secure Shell (SSH) Protocol, command-line interface (CLI), and HTTP management
RADIUS and TACACS+
Cisco Configuration Professional
Cisco Configuration Express
Cisco Configuration Engine support
Cisco AutoInstall
Cisco IP Service-Level Agreement (IP SLA)
Cisco IOS Embedded Event Manager (EEM)
CiscoWorks
Securitate
Cisco ScanSafe Connector
Cisco IOS Software black and white lists
Intrusion Prevention System (IPS)
Control Plane Policing
Flexible Packet Matching
Network foundation protection
Cisco IOS Firewall
Advanced application inspection and control
Secure HTTP (HTTPS), FTP, and Telnet Authentication Proxy
Dynamic and static port security
Firewall stateful failover
VRF-aware firewall
Secure Sockets Layer (SSL) VPN for secure remote access
Hardware-accelerated DES, 3DES, AES 128, AES 192, and AES 256
Public-key-infrastructure (PKI) support
Fifty IPsec tunnels
Cisco Easy VPN Client and Serve
NAT transparency
Dynamic Multipoint VPN (DMVPN)
Tunnel-less Group Encrypted Transport VPN
VRF-aware IPsec
IPsec over IPv6
Adaptive control technology
Session Initiation Protocol (SIP) application-layer gateway
Altele
Virtual Route Forwarding (VRF) Lite
Next Hop Resolution Protocol (NHRP)
Bidirectional Forwarding Detection (BFD)
Web Cache Communication Protocol (WCCP)
Access control lists (ACLs)
IPv4 and IPv6 Multicast
Open Shortest Path First (OSPF)
Border Gateway Protocol (BGP)
Performance Routing (PfR)
Enhanced Interior Gateway Routing Protocol (EIGRP)
Layer 2 Tunneling Protocol Version 3 (L2TPv3)
Network Address Translation (NAT)
Dynamic Host Configuration Protocol (DHCP) server, relay, and client
Dynamic Domain Name System (DNS)
DNS Proxy
DNS Spoofing
Routing Information Protocol Versions 1 and 2 (RIPv1 and RIPv2)
Generic routing encapsulation (GRE) and multipoint GRE (MGRE)
Cisco Express Forwarding
Standard 802.1d Spanning Tree Protocol
Layer 2 Tunneling Protocol (L2TP)