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Figure 3 The Cisco 1720 VPN Router is Part of the Cisco Networked Ofﬁce

Stack, Which includes Autosensing 10/100 Hubs and Switches

Key Features and Benefits

The Cisco 1720 offers industry-leading VPN support,

ﬂexibility, and network device integration, with key features

listed in Table 1.

Table 1 Key Features and Beneﬁts of Cisco 1720 Series

Feature Function/Beneﬁt

VPN Support

Full Cisco IOS support

Including multiprotocol routing (IP, IPX, AppleTalk, IBM/SNA) and

bridging

• Industry de facto standard networking software for Internet and private WANs

• Provides industry’s most robust, scalable, and feature-rich internetworking software support

• Part of Cisco’s end-to-end network solution

Firewall

Cisco IOS Firewall includes CBAC for dynamic ﬁrewall ﬁltering,

denial-of-service detection and prevention, Java blocking, and

real-time alerts

• Allows internal users to access the Internet with secure, per-application-based dynamic access

control while preventing unauthorized Internet users from accessing the internal LAN

Encryption

IPSec ESP DES and Triple DES.

Expansion slot for future high-speed hardware-based encryption

• Enables creation of VPNs by providing industry-standard data privacy, integrity, and authenticity as

data traverses public networks

• Provides option to upgrade to high-speed hardware-assisted encryption up to T1/E1 when available

RISC Processor • Enables software-based encryption performance at 512 kbps for VPNs

Device Authentication and Key Management

IKE, X.509v3 digital certiﬁcate, support for CEP with certiﬁcate

authorities (CAs) such as Verisign and Entrust

• Ensures proper identity/authenticity of devices and data

• Enables scalability to very large IPSec networks through automated key management

User Authentication

PAP/CHAP, RADIUS, TACACS+, Token

• Ensures that the users are who they say they are

Tunneling

IPSec, GRE, L2F, L2TP

• Choice of standards-based tunneling methods to create VPNs for IP and non-IP trafﬁc

• Allows any standards-based IPSec or L2TP client to interoperate with Cisco IOS tunneling

technologies

Management

Manageable via SNMP (CiscoView, CiscoWorks2000), Telnet, and

through console port

• Allows central monitoring, conﬁguration, and diagnostics for all functions integrated in the Cisco

1720 router, reducing management time and costs

Ease of Use and Installation

Cisco ConﬁgMaker, SETUP conﬁguration utility, AutoInstall,

color-coded ports/cables, LED status indicators

• Simpliﬁes and reduces deployment time and costs with graphical LAN/VPN policy conﬁgurator,

command-line context-sensitive conﬁguration questions, and straight-forward cabling

• LEDs allow quick diagnostics and troubleshooting

Network Address Translation and Easy IP • Simpliﬁes deployment and reduces Internet access costs

Quality of Service

CAR, Policy Routing, WFQ, GTS, RSVP

• Allocates WAN bandwidth to priority applications for improved network performance

Reliability and Scalability

Cisco IOS software, dial-on-demand routing; dual bank Flash

memory, scalable routing protocols (for example, OSPF and

Enhanced IGRP), Hot Standby Router Protocol

• Improves network reliability and enables scalability to large networks

Flexibility

Modular architecture (WAN card slots) • Enables ﬂexible WAN choices on the Cisco 1720 router, protecting investment

WAN interface cards shared with Cisco 1600, 2600, and 3600 routers • Reduced cost of maintaining inventory

• Lowers training costs for support personnel

• Protects investments through reuse on various platforms

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