A lot of RPC services start out on a standard port (TCP port 135) and then move over to a dynamically allocated port. Fortunately, there’s a way to ask the RPC endpoint mapper what services are available and what port(s) have been assigned to that service. It uses the portqry command:
C:\PortQryV2>portqry -n host2043.servers.example.com -e 135 -p tcp -v
Note: the -v option only displays extra data in local mode
Querying target system called:
host2043.servers.example.com
Attempting to resolve name to IP address...
Name resolved to 10.237.73.103
querying...
TCP port 135 (epmap service): LISTENING
Using ephemeral source port
Querying Endpoint Mapper Database...
Server's response:
UUID: 04eeb297-cbf4-466b-8a2a-bfd6a2f10bba EFSK RPC Interface
ncacn_np:host2043.servers.example.com[\\pipe\\efsrpc]
UUID: 367abb81-9844-35f1-ad32-98f038001003
ncacn_ip_tcp:host2043.servers.example.com[50007]
UUID: 91ae6020-9e3c-11cf-8d7c-00aa00c091be
ncacn_np:host2043.servers.example.com[\\pipe\\cert]
UUID: 91ae6020-9e3c-11cf-8d7c-00aa00c091be
ncacn_ip_tcp:host2043.servers.example.com[50006]
UUID: 29770a8f-829b-4158-90a2-78cd488501f7
ncacn_np:host2043.servers.example.com[\\pipe\\SessEnvPublicRpc]
UUID: 29770a8f-829b-4158-90a2-78cd488501f7
ncacn_ip_tcp:host2043.servers.example.com[50004]
UUID: 7f1343fe-50a9-4927-a778-0c5859517bac DfsDs service
ncacn_np:host2043.servers.example.com[\\PIPE\\wkssvc]
UUID: f6beaff7-1e19-4fbb-9f8f-b89e2018337c Windows Event Log
ncacn_np:host2043.servers.example.com[\\pipe\\eventlog]
UUID: f6beaff7-1e19-4fbb-9f8f-b89e2018337c Windows Event Log
ncacn_ip_tcp:host2043.servers.example.com[50002]
UUID: 1ff70682-0a51-30e8-076d-740be8cee98b
ncacn_np:host2043.servers.example.com[\\PIPE\\atsvc]
UUID: 378e52b0-c0a9-11cf-822d-00aa0051e40f
ncacn_np:host2043.servers.example.com[\\PIPE\\atsvc]
UUID: 33d84484-3626-47ee-8c6f-e7e98b113be1
ncacn_np:host2043.servers.example.com[\\PIPE\\atsvc]
UUID: 86d35949-83c9-4044-b424-db363231fd0c
ncacn_np:host2043.servers.example.com[\\PIPE\\atsvc]
UUID: 86d35949-83c9-4044-b424-db363231fd0c
ncacn_ip_tcp:host2043.servers.example.com[50003]
UUID: 3a9ef155-691d-4449-8d05-09ad57031823
ncacn_np:host2043.servers.example.com[\\PIPE\\atsvc]
UUID: 3a9ef155-691d-4449-8d05-09ad57031823
ncacn_ip_tcp:host2043.servers.example.com[50003]
UUID: c9ac6db5-82b7-4e55-ae8a-e464ed7b4277 Impl friendly name
ncacn_hvsocket:host2043.servers.example.com[F58797F6-C9F3-4D63-9BD4-E52AC020E586]
UUID: 76f226c3-ec14-4325-8a99-6a46348418af
ncacn_np:host2043.servers.example.com[\\PIPE\\InitShutdown]
UUID: d95afe70-a6d5-4259-822e-2c84da1ddb0d
ncacn_np:host2043.servers.example.com[\\PIPE\\InitShutdown]
UUID: d95afe70-a6d5-4259-822e-2c84da1ddb0d
ncacn_ip_tcp:host2043.servers.example.com[50001]
UUID: 12345778-1234-abcd-ef00-0123456789ac
ncacn_np:host2043.servers.example.com[\\pipe\\lsass]
UUID: 12345778-1234-abcd-ef00-0123456789ac
ncacn_ip_tcp:host2043.servers.example.com[50000]
UUID: 0b1c2170-5732-4e0e-8cd3-d9b16f3b84d7 RemoteAccessCheck
ncacn_np:host2043.servers.example.com[\\pipe\\lsass]
UUID: 0b1c2170-5732-4e0e-8cd3-d9b16f3b84d7 RemoteAccessCheck
ncacn_ip_tcp:host2043.servers.example.com[50000]
UUID: 0b1c2170-5732-4e0e-8cd3-d9b16f3b84d7 RemoteAccessCheck
ncacn_ip_tcp:host2043.servers.example.com[50005]
UUID: 0b1c2170-5732-4e0e-8cd3-d9b16f3b84d7 RemoteAccessCheck
ncacn_np:host2043.servers.example.com[\\pipe\\lsass]
UUID: 0b1c2170-5732-4e0e-8cd3-d9b16f3b84d7 RemoteAccessCheck
ncacn_ip_tcp:host2043.servers.example.com[50000]
UUID: 0b1c2170-5732-4e0e-8cd3-d9b16f3b84d7 RemoteAccessCheck
ncacn_ip_tcp:host2043.servers.example.com[50005]
UUID: b25a52bf-e5dd-4f4a-aea6-8ca7272a0e86 KeyIso
ncacn_np:host2043.servers.example.com[\\pipe\\lsass]
UUID: b25a52bf-e5dd-4f4a-aea6-8ca7272a0e86 KeyIso
ncacn_ip_tcp:host2043.servers.example.com[50000]
UUID: b25a52bf-e5dd-4f4a-aea6-8ca7272a0e86 KeyIso
ncacn_ip_tcp:host2043.servers.example.com[50005]
UUID: 8fb74744-b2ff-4c00-be0d-9ef9a191fe1b Ngc Pop Key Service
ncacn_np:host2043.servers.example.com[\\pipe\\lsass]
UUID: 8fb74744-b2ff-4c00-be0d-9ef9a191fe1b Ngc Pop Key Service
ncacn_ip_tcp:host2043.servers.example.com[50000]
UUID: 8fb74744-b2ff-4c00-be0d-9ef9a191fe1b Ngc Pop Key Service
ncacn_ip_tcp:host2043.servers.example.com[50005]
UUID: 51a227ae-825b-41f2-b4a9-1ac9557a1018 Ngc Pop Key Service
ncacn_np:host2043.servers.example.com[\\pipe\\lsass]
UUID: 51a227ae-825b-41f2-b4a9-1ac9557a1018 Ngc Pop Key Service
ncacn_ip_tcp:host2043.servers.example.com[50000]
UUID: 51a227ae-825b-41f2-b4a9-1ac9557a1018 Ngc Pop Key Service
ncacn_ip_tcp:host2043.servers.example.com[50005]
UUID: df1941c5-fe89-4e79-bf10-463657acf44d EFS RPC Interface
ncacn_np:host2043.servers.example.com[\\pipe\\efsrpc]
Total endpoints found: 38
==== End of RPC Endpoint Mapper query response ====
