The Cyberguard Snapgear SG635 is
a firewall, NAT, VPN, IDS and more, all built into a NIC card!! All
the benefits of a hardware firewall, without the need for an external
device, perfect for colocated servers.
I was playing around with it last
night, and was testing out the IDS capabilities (Intrusion Detection
System). This is by far the coolest part of this device. What it
does, is makes available to the public Internet a whole assortment of
services that are typical for hackers to use to hack into. However,
they’re dummy services, its a trap. Once someone does a port scan, or
attempts to hack into something like IRC, Finger, Echo, Telnet,
etc…it will let them connect for only the amount of times you specify
(I set it at three). After the 3rd attempt to connect to these barred
services, it blacklists you, and you can’t connect to ANYTHING. Its as
if the server crashed, and fell off the planet.
I usually don’t advocate or endorse
very much, but really, this is the coolest thing I’ve seen in a long
time. Well worth the $400 price tag.