联网
| 支持ISDN连接 |
Y |
| 支持广域网类型 |
VDSL\nEthernet |
安全
| 防火墙 |
NAT, SIF |
| 认证方法 |
802.1x RADIUS, TACACS+ |
| 支持虚拟专用网 |
IPSec |
| 网络地址转换功能 |
HW-NAT TCP |
| 虚拟专用网信道数量 |
5 |
| 系统事件日志 |
Y |
| 防火墙 |
Y |
| 网页(URL)过滤 |
Y |
| MAC（媒体存储控制）地址过滤 |
Y |
以太网LAN特性
| 布线技术 |
10/100/1000Base-T(X) |
| 以太网的数据传输率 |
10, 100, 1000 Mbit/s |
端口 & 界面
| 广域网接口 |
Ethernet (RJ-45) |
| USB 端口数量 |
1 |
| DC-IN插口 |
Y |
协议
| 路由协议 |
RIP-2 |
| 管理协议 |
Telnet/SSL, SSH, TFTP, SNMP, HTTPS/HTTP |
| 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 |
ARP, proxy ARP, BOOTP, LANCAPI, DHCP, DNS, HTTP, HTTPS, IP, ICMP, NTP/SNTP, NetBIOS, PPPoE (server), RADIUS, RIP-1, RIP-2, RTP, SIP, SNMP, TCP, TFTP, UDP, VRRP |
性能
| 可支持的Linux操作系统 |
Y |
| 可支持的Mac操作系统 |
Y |
ADSL的特点
| ADSL说明书 |
VDSL2, ADSL1, ADSL2, ADSL2+ |
管理功能
| 支持服务质量（QoS） |
Y |
| 重启按钮 |
Y |
| 网上管理 |
Y |
另外
| RS-232接口 |
1 |
| 以太网连接器 |
Y |
| 过滤 |
MAC/IP/URL |
| 包括 AC 适配器 |
Y |
| 以太网路(RJ-45)连接接口数量 |
4 |
VPN Router w/ Integrated VDSL & ADSL2+ Modem, EU, over POTS
The LANCOM 1781VA is a professional, high-performance VPN router for high-speed Internet access with integrated VDSL2 and ADSL2+ modem. Thus it provides maximum flexibility for a transition from ADSL to high-speed VDSL Internet connections. Likewise, an operation without splitter is possible based on ADSL2+ Annex B / J (over ISDN) or A / M (over POTS). In all industries and branches of trade with high demands on security and performance it is the ideal foundation for a professional site connectivity. With its extensive VPN capabilities, the device provides secure, high-performance connectivity to branch offices and remote workers. The four ports of the integrated Gigabit Ethernet switch ensure maximum performance and are also energy-efficient based on IEEE 802.3az: If no data is transmitted over an interface, its power consumption shuts down automatically. The LANCOM 1781VA supplies everything required of a modern enterprise network, such as comprehensive Quality-of-Service capabilities and an object-oriented firewall.
