Buffalo has packed a VPN into an 802.11g gateway to allow remote access: GoToMyPC.com and other services have shown that individuals and small businesses need remote access to their desktop computers while away from their home or office. The Buffalo Airstation Wiireless Secure Remote Gateway--known more concisely as the WZR-RS-G54--has a PPTP (Point-to-Point Tunneling Protocol) VPN server built in to allow remote connections back to the wired and wireless LAN connected to the gateway.
In an interview, Buffalo's vice president of product marketing and public lreations Morikazu Sano noted a fact I didn't find in the press release: multiple remote users can essentially relay via the gateway to exchange files in a secure fashion. The gateway is the gating item for bandwidth, of course, but both remote users can use it as an endpoint instead of using email or other tools. A service menu in the remote software will let you find which other users are connected.
The device will support dynamic DNS, since many home networks have ever-changing dynamic addresses. It also has the very nice Wi-Fi feature that lets you separate out users on the WLAN: each Wi-Fi user has a separate tunnel to the Internet connection, meaning that users don't see promiscuous traffic on their link. (This doesn't disable sniffing, but it does mean that with WPA-PSK enabled, users can't see each other's traffic.) Included software supports Wake-on-LAN allowing a remote user to wake up their slumbering desktop machine.
The device will cost about $200 and ships this month. Buffalo likes to contrast that price point with the $20 per month cost of GoToMyPC.com.