The Dray Tek Vigor 120 is an ADSL modem with an Ethernet connection; it is not a router but a true ADSL Ethernet modem. By providing a PPPo E to PPPo A bridge, the connected device (firewall, router or PC) can log into the Internet (your ISP) directly & have full control over the ADSL connection
- that makes the Vigor 120 a unique product. You can connect any device to the Vigor 120 which has a PPPo E client facility, which
Includes:: PCs, most Ethernet-WAN routers & the Apple Airport but the actual connection to your ISP is still PPPo A (unlike other modems which only provide PPPo E native bridging), which is the unique feature of this product & makes it compatible with all UK ISPs, where PPPo A is used as standard. Other ADSL Ethernet 'modems' use workarounds to get a public IP address 'through' to your secondary device/client, requiring non-standard operation & complicated dual-stage setup (modem logs in, router routes) but the Vigor 120 provides the secondary device with a real routed IP connection & the ability to fully manage the connection, making setup easy. In most cases, the Vigor 120 needs no setup or configuration
- just plug it in & set up your PC or router. All login/ISP details are entered on the connected client device, not the Vigor 120. This method also differs from using a regular ADSL router which logs in itself & then uses NAT or multiple public IP addresses to create an onward client connection for your secondary device; that is not IP address thrifty, or introduces secondary NAT compromises. With the Vigor 120 bridge/modem, you get a true single public IP address (or multiple, if you have them) straight through to your firewall/router, which also has complete control of the ISP connection.