RADIUS protocol's one line Question/Answer

RADIUS : Remote Authentication Dial In User Service

RADIUS RFC'S : 2865, 2866

0)  Radius is Stateless protocol, Extensible protocol

1) Radius supports protocol for Authentication are : PAP,CHAP,PPP,UNIX-LOGIN

2) Radius Authentication port : 1812

3) Radius Accounting Port : 1813

4) Radius uses UDP

5) Radius Packet Format

6) Code : 1 Octet,   Identifier : 1 Octet,  Length : 2 Octet, Authenticator : 16 Octet

7) Length : Min 20 and Max 4096

8) Radius Attributes

   

Code Attributes 1 User-Name 2 User-Password 3 CHAP-Password 4 NAS-IP-Address 5 NAS-Port 6 Service-Type 7 Framed-Protocol 8 Framed-IP-Address 9 Framed-IP-Netmask 10 Framed-Routing 11 Filter-Id 12 Framed-MTU 13 Framed-Compression 14 Login-IP-Host 15 Login-Service 16 Login-TCP-Port 17 (unassigned) 18 Reply-Message 19 Callback-Number 20 Callback-Id 21 (unassigned) 22 Framed-Route

Code Attributes 23 Framed-IPX-Network 24 State 25 Class 26 Vendor-Specific 27 Session-Timeout 28 Idle-Timeout 29 Termination-Action 30 Called-Station-Id 31 Calling-Station-Id 32 NAS-Identifier 33 Proxy-State 34 Login-LAT-Service 35 Login-LAT-Node 3 36 Login-LAT-Group 37 Framed-AppleTalk-Link 38 Framed-AppleTalk-Network 39 Framed-AppleTalk-Zone 40-59 (reserved for accounting) 60 CHAP-Challenge 61 NAS-Port-Type 62 Port-Limit 63 Login-LAT-Port

9) Diameter Protocol is double than Radius

10) Diameter works on TCP or SCTP protocol

11) Diameter uses Transport level security IPSEC , TLS