Some month's ago my cheap Thomson WLAN VOIP router, which I got from my ISP, just stopped working and I needed something stable and secure. I searched a lot, read a lot of reviews until I found the ISA550W from Cisco. It had everything which I needed:
Integrated security appliance (ISA)
And it didn't cost that much (around 360$) like a real business hardware firewall (1000$ +). There is also the greater brother of the ISA550W the ISA 570W, which just has better performance, more ports and throughput than the ISA550W, but for me the throughput was enough. Ok here now the specifications:
Firewall Throughput 200 Mbps
IPsec VPN Throughput 75 Mbps
Anti-virus Throughput 50 Mbps
IPS Throughput 60 Mbps
UTM Throughput 45 Mbps
Maximum Connections 15000
IPsec VPN Site-to-Site Tunnels 25
IPsec Remote Access Tunnels 10
SSL VPN Tunnels 10
Total Interface 7 GE
WAN Interface 2 GE
LAN Interface 6 GE
WLAN (802.11b/g/n) yes
DMZ Port Up to four
The detailed specs you can get here and the full administration guide here.
So I bought it right away and started configuring. First of all I must say that you can configure nearly everything you can imagine. (Especially when you are used to a silly Thomson router admin interface)
I didn't had any problems yet with this router, but the only annoying thing is, that the security updates are just valid for one year, and then you need to renew the subscription to get updates for the anti-virus, IPS etc.
Today I use the IPsec VPN, anti-virus, IPS and the standard network configs for WLAN, port forwarding etc. which all...