Where can I find Wifi->ethernet firewall?

Question

Previously I saw a personal firewall for use at public hotspots. It had a Wifi connection to sign onto the public hotspot, and then an ethernet connection to connect to the PC (and seems to me another model had 2 wireless connections - one for hotspot, 1 for PC). It contained a NAT router which it used as a firewall to protect the PC. I didn't bookmark the page though, and now I can't find the item again.
Before I order the parts to go build one, has anyone seen one (and of course can you send me a link or model number) ?

Partsbucket - If I was making a hotspot or sharing internet access with a neighbor, I would probably do something like what you are describing. What I am looking for though is something to isolate my PC from other PCs logged in on the same wireless network. On the firewall, "WAN" would be the wireless, and "LAN" would be the ethernet port. Basic connection chain would be

ISP --- DSL modem --- hotspot router --- AP (...wireless connection...) Firewall --- laptop

It needs to be hardware that I can carry with me, and able to connect wirelessly to a public hotspot.

Answer 1

There are some wireless "bridges" which have a nat router in them. The only ones I know about are not really "laptop" size although they are not really big either.

You can even get software for the WRT54G to allow it to be used as a bridge/router wirelessly.
http://www.dd-wrt.com/wiki/index.php/Wireless_Bridge

Check with some of the online suppilers
http://echotechwireless.com or http://defactowireless.com for router/bridge combinations.

Answer 2

Most of Wireless Router/AP can do firewall. But if you said that one is wireless and connected to public hotspot and the other is UTP ethernet connection connected to your PC, it's probably you're using Wireless Router/AP with client functionality. One of the devices which that capability which I know is ASUS WL-330g USB Wireless Router/AP with Client functionality (you can find the spec at their website), but recently It should be many vendors like D-Link, Linksys, Senao, etc also provide the same functionality. Just give it a try at their official website for detail spec.

Answer 3

How about this:
1st thing in line, right from the internet, is some type of modem (cable, DSL). Next in line, coming out of the modem, is a public Wireless router. Next is a hardware firewall, that can perform NAT. After that, is a wireless router with some wired ports, that can also perform NAT. This internal router gives you secure wireless, and a wire can run from a port to a switch for your internal network.
Example:
1. Straight from internet 67.233.35.127 (outside of modem, your public address)
2. Lan side of modem is 10.0.0.1 (Set static)
3. Wan side of Wireless router - 10.0.0.2 (Set Static)
This public router has no security - users get raw internet
4. LAN side of router is 10.0.0.5
5. Wan port of Firewall is 10.0.0.7
6. LAN port of firewall is 192.168.X.1
7. private AP plugs into firewall - 192.168.X.2, set static
Has DHCP to hand out 192.168.Y.X
8. Switch also plugs into firewall, to be distributed out to PC's

If you run a server on your internal LAN, It might be at 192.168.X.5, And provide a DHCP scope of 192.168.X.100 to 192.168.X.200

Hope I made this clear!
-best luck

Answer 4

i does no longer propose putting something simply by fact the DMZ in view which you're unquestionably connecting that gadget to the internet without risk-free practices in any respect. quite i might propose putting a mounted IP handle on the PS3 and port forward from the router to the PS3 any ports that are mandatory for what you prefer to do on the PS3.