I just ordered our company a Cisco 831 Ethernet Router. Don't have it yet, but it looks cool. Either that, or I would go with a watchguard firewall.

Just depends on how much you are wanting to spend.

watchguard
Firebox SOHO 6tc is a high performance end-point VPN and firewall solution for remote offices with mobile VPN users. Protects with stateful packet filtering, application level gateways, and optional web content filtering. Firebox SOHO 6tc includes a subscription to LiveSecurity® Service
and anti-virus protection.

75Mbps Packet Filter Throughput

20Mbps VPN (3DES) Throughput

6 - 10/100 Fast Ethernet ports
50 User License

Can handle up to 10
Mobile User Clients and 6 Branch office VPN Tunnels

Remote Management



Firebox SOHO 6|tc Features:

Comprehensive Security

Easy Setup and Management

Broadband Connection

Virus Protection

Scalable Platform
link: http://www.cdw.com/shop/products/def...spx?EDC=415245

Cisco
Features:
Stateful Inspection Firewall
Access Control Lists (ACLs),
Network Address Translation/Port Address Translation (NAT/PAT),
Lock-and-Key security, dynamic ACLs, and router and route authentication
Cisco Intrusion Detection System (IDS)
Hardware-accelerated IPSec 3DES encryption
Cisco Easy VPN Remote
URL Filtering with WebSENSE software and server*
IPSec NAT Transparency (NAT Traversal or NAT Aware IPSec)
PKI support with digital certificates
IP QoS-Low-latency queuing, Weighted Random Early Detection, committed access rate (CAR), Class-Based Traffic Shaping
Asynchronous Transfer Mode (ATM) QoS (for Cisco 837)-ATM Traffic UBR, VBRnrt, VBRrt, and CBR with per-VC queuing and traffic-shaping
High-performance encryption
IP Multicast technology
Cisco Router Web Setup Tool
Supported by Cisco VPN Solution Center, CiscoWorks VPN/Security Management Solution (VMS) and Cisco Secure Policy Manager
*Features targeted for future Cisco IOS Software Release
Default DRAM1 Memory 32MB
Maximum DRAM Memory 48MB
Default Flash1 Memory 12MB
Maximum Flash Memory 24MB
link: http://www.cdw.com/shop/products/def...spx?EDC=449437

both of those are under $500