4.17 GETUNIXCREDSFROMNTUSERSIDW_PROC

The client sends a SUNRPC packet to the User Name Mapping Protocol service requesting the POSIX credentials for the Windows user SID "S-1-5-21-3994172400-2625080034-4079281819-500" representing Windows user account "nfs-dom-1\administrator".

   Frame: 
 + Ethernet: Etype = Internet IP (IPv4)
 + Ipv4: Next Protocol = UDP, Packet ID = 50594, Total IP Length = 100
 + Udp: SrcPort = 1013, DstPort = UNM(819), Length = 80
 - Rpc: Call, Program = mapsvc, Procedure =
   GETUNIXCREDSFROMNTUSERSIDW_PROC
     TransactionID: 1221456821 (0x48CDF3B5)
     MessageType: Call
   - ServiceCall: 
       RPCVersionNumber: 2 (0x2)
       ProgramNumber: mapsvc, 351455(0x00055CDF)
       ProgramVersion: 2 (0x2)
       ProcedureNumber: GETUNIXCREDSFROMNTUSERSIDW_PROC
     - Credential: No Identity Authentication
         Flavor: No Identity Authentication
         AuthDataLength: 0 (0x0)
     - Verification: 
         Flavor: No Identity Authentication
         AuthDataLength: 0 (0x0)
 - Unm: GETUNIXCREDSFROMNTGROUPNAMEW_PROC Call
   - WindowsUserAccountNameW: 
     - WindowsAccountName: 0x1
       - UNMNameW: 
           Length: 28
           Data: 01 05 00 00 00 00 00 05 15 00 00 00 F0 3B 12 EE
                 E2 8A 77 9C 9B E6 24 F3 F4 01 00 00

The User Name Mapping Protocol service on the server responds with a SUNRPC response packet with the POSIX credentials for the mapped UNIX account corresponding to Windows user "nfs-dom-1\Administrator" as POSIX user "root", illustrated as follows.

   Frame: 
 + Ethernet: Etype = Internet IP (IPv4)
 + Ipv4: Next Protocol = UDP, Packet ID = 13116, Total IP Length = 80
 + Udp: SrcPort = UNM(819), DstPort = 1013, Length = 60
 - Rpc: Reply, Status = Message accepted, Detail = Call succeeded
     TransactionID: 1221456821 (0x48CDF3B5)
     MessageType: Reply
   - ServiceReply: 
       ReplyStatus: Message accepted
     - MessageAccepted: 
       - Verification: 
           Flavor: No Identity Authentication
           AuthDataLength: 0 (0x0)
         AcceptState: Call succeeded
 - Unm: GETUNIXCREDSFROMNTGROUPNAMEW_PROC Reply
   - UnixCredsW: 
     - UnixAccountName: 0x1
       - UNMNameW: root
           Length: 8
           Data: root
       ID: 0
       GidCount: 2
     - GID: 
         GID: 1
         GID: 1