Hello every body
Now I have a aruba iap-105 and a external captive portal,we need redirect a user to portal page ,then portal give notify iap who is already login , now I use the protocol is CMCC2.0,external portal is also the radius server,about the process is :
1.user visit a website,then iap redirect to portal
2.user type username and password in portal, then submit
3.portal send a udp packet to iap to auticate
4.autication between radius server(portal) and iap
5.finally, iap return a result(sucess or failed) to portal, then portal let user login or reuturn a fail message
Now,I have a problem at 3rd step,in CMCC protocol,portal send a udp packet to iap ,but iap return a icmp packet:destination unreachable (port unreachable),ps: the dst port is udp 2000
so,my question is: I heard iap support portal protocol, and cmcc is one kind of portal,but I cannot auth, why?
Maybe I go wrong the protocol, if so ,please tell me what the right protocol,or other method I can use, thank you very much(ps:about auth text,I cannot return anything in some of scenes,so I cannot use this method)