On Wed, Nov 03, 2004 at 02:19:21PM +0800, Chan Min Wai wrote: > Dana Hudes wrote: > > On Wed, 3 Nov 2004, Chan Min Wai wrote: > > Go back to the defintion of RADIUS: Remote Authentication Dial-In User > > System. Now think. How do dialup users connect? They use SLIP/PPP. > > PPP has provision for sending the IP address info for the connection. It > > is part of the NCP (authentication happens in LCP). Now you are connecting > > on an WLAN. There is no PPP. So how can the client get an IP address > > when you set it to 'obtain IP address automatically'? Same as > > on a wired LAN: BOOTP or DHCP. The 802.11 MAC doesn't get you IP address.
> I see > So unless that, this "Switch" is smart enough to do a PPP connection and > only then this IP address will be able to be distribute by the switch to > the client. No, WLAN has nothing to do with PPP. PPP is the Point to Point Protocol, it is a protocol for talking over lines with two ends and passing layer3 traffic across them. It is a layer 2 protocol. WLAN uses a different layer2 protocol (or protocols?), defined in the 802.11 standards. Well, I guess if someone extended PPPoE to PPPo802.11, then yes? But that would be very very daft... > So no other way round to distribute ip address (other then using DHCP > Server) In _theory_ the RADIUS server can send an IP address to the AP to give to the device (via DHCP) but I don't think any do... (Of course, I could be wrong... 802.1x happens before an IP address is assigned, right?) If you need a solution like that, maybe a self-built AP using a WLAN card that lets you use hostAP or similar? Strikes me as a major pain, frankly. > my other Question is, how I recorded what IP I've been assign to them > using that way? Should be in the Accounting-Start packet. If you don't get an Accounting-Start packet (which is quite likely >_<) then no, no way to record it via RADIUS. You _might_ be able to rlm_exec a script to go fetch it from the AP's web-based management interface, but that seems like an awful lot of hard work to me. -- Paul "TBBle" Hampson, on an alternate email client. - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
