安全
| 认证方法 |
PAP, CHAP, MS-CHAP, MS-CHAPv2/PPP |
| 虚拟专用网信道数量 |
5 |
| MAC（媒体存储控制）地址过滤 |
Y |
协议
| 切换协议 |
Ethernet |
| 路由协议 |
RIP-1, RIP-2 |
| 数字信号协议 |
EURO-ISDN, ISDN 1TR6, ADSL, ISDN DSS1/ETSI, ADSL o ISDN, ADSL2+ |
| 数据链路协议 |
Ethernet, Fast Ethernet, PPP |
| 管理协议 |
SNMP 2, SNMP, Telnet, HTTP, HTTPS |
| 动态主机配置协议客户 |
Y |
| 动态主机配置协议服务器 |
Y |
| 支持网络协议 |
TCP/IP, IPX/SPX, PPTP, UDP/IP, NetBEUI/NetBIOS, NTP, VoIP, ICMP/IP, IP/IPX, IPSec, PPPoE, PPPoA, IPoA |
| 支持的协议 |
ITU X.75, HDLC, ITU G.992.5, ITU G.992.1 (G.DMT) An. A |
其他功能
| 吞吐量 |
65 Mbps |
| 连通的液晶显示器 |
Y |
| 最大数据传输率 |
0.1 Gbit/s |
| 接口 |
USB-2.0, Ethernet, Serial |
ADSL的特点
| ADSL说明书 |
ITU G.992.3, ITU G.992.5 Annex B, ITU G.992.5 Annex A |
| xDSL连接类型 |
ADSL |
端口 & 界面
| RJ - 11端口数量 |
1 |
| USB 端口数量 |
1 |
| DC-IN插口 |
Y |
另外
| RS-232接口 |
1 |
| 以太网连接器 |
Y |
| 连接方式 |
Wired |
| 过滤 |
IP, URL |
| 以太网路(RJ-45)连接接口数量 |
5 |
LANCOM 1721+ VPN ADSL2+
- Integrated ADSL2+ modem
- 5 integrated IPsec VPN channels, upgradeable to 25, integrated hardware acceleration
- Supports VLANs and LANCOM Advanced Routing und Forwarding (ARF)
- Stateful-inspection firewall with intrusion detection/denial-of-service protection
- Multiple interfaces: ISDN, USB-2.0 port, Ethernet, and serial port
- Free management tools
- Useful installation wizards such as 1-Click-VPN
The LANCOM 1721+ VPN is a top model in the LANCOM line of highly integrated VPN networking components designed for secure site connectivity. The LANCOM 1721+VPN already has an ADSL2+ modem on board, so it can be connected directly to the Internet. Five IPsec VPN channels are featured as standard, which can be upgraded to 25 with the VPN Option. To ensure that admins benefit from convenience during configuration, VPNs can be setup within seconds with the help of user-friendly installation wizards such as LANCOM 1-Click-VPN. The free management tool LANmonitor provides a detailed overview of the entire network. Extensive security functions such as the integrated stateful-inspection firewall provide highest levels of security. Diverse connection options such as ISDN, USB 2.0 and the serial interface provide alternatives to IP for accessing the device.
