Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. The ktpass command-line tool allows non-Windows services that support Kerberos authentication to use the interoperability features provided by the Kerberos Key Distribution Center KDC service. The default value is 1. The default is for the domain controller to be detected, based on the principal name. If the domain controller name doesn't resolve, a dialog box will prompt for a valid domain controller.
This parameter is optional. The default is to set both in the. If rndpass is used, a random password is generated instead. Displays Help for this command. Remarks Services running on systems that aren't running the Windows operating system can be configured with service instance accounts in AD DS. This allows any Kerberos client to authenticate to services that are not running the Windows operating system by using Windows KDCs.
Note, you need cmd. Process NTDS. DIT with esedbexport tool to export all Active Directory database tables. You need to download and compile it. You may use any machine to run this command, not necessary the domain controller. After the command completes, you'll find ntds. Note, content of the directory may be different, depending on Active Directory database version. Install Python 2.
Install PyCrypto. Here are Prebuilt Python Binaries for Windows. As you may have noticed, the output keytab file is specified as the last parameter to the command. This this the file you need to pass to Wireshark.
You can specify the filename of the keytab file to use in the KRB5 preferences main menu, Edit menu, Preferences menu item, in the left tree of Preferences dialog expand Protocols, select KRB5 protocol, on the right panel specify Kerberos keytab file. You can use this option multiple times to load multiple keytab files. Note, there is a bug in the windows version of kerberos decryption handling keytab files. In windows you can only specify a filename and not a full path. This means that you must store the keytab file in the same directory as where your capture file is stored which becomes the current working directory for wireshark and then you specify just the keytab filename without the path.
This bug does applies to Wireshark version 1. It must have been fixed. Note, only bit Windows version of Wireshark decrypts Kerberos traffic. Open Wireshark About Dialog. In bit version you'll see "Compiled bit Keytab file is also included. Please use Wireshark 0. A complete list of Kerberos display filter fields can be found in the display filter reference. These account mappings are managed through the Active Directory Users and Computers snap-in.
These account mappings will allow the non-Windows Kerberos realm to act as an account domain. Users with non-Windows Kerberos principals that have mappings to domain accounts, can logon to a workstation that is joined to a trusted domain using the non-Windows Kerberos principal and password from the non-Windows Kerberos realm.
If you need to access downlevel Windows NT systems, the domain account that is used for mapping, needs to have a password that is synchronized to the non-Windows Kerberos principal password. Start the Active Directory Users and Computers snap-in. Figure 9. Advanced Features. Locate the account to which you want to create mappings, and right-click to view Name Mappings.
This example uses the account teresa. Click the Kerberos Names mappings tab. Add a principal from the foreign MIT realm. Figure Kerberos Name Mapping. The following illustration shows the architecture of the transitive cross-realm trust with a child domain. Cross-realm trust to parent domain. In order for child domains or other domains in a forest of Windows Server functional level to make use of a Cross-Realm trust between a non-Windows realm and its parent domain there are some operations that need to be completed.
This is not available in Windows or Windows Server interim functional level forests. Mark the Cross-Realm trust as ForestTransitive. To do this run the following netdom. Confirm the name suffix addition with the following command:. Output should look similar to the following:. Name Type Status Notes. The command completed successfully. The samples are located in the following directory:. See the readme file in the gss-sample directory for more information.
Create the keytab using the following command:. COM —mapuser. Copy sample. Import sample. Start the GSS server.
Text similar to the following will be displayed. Authenticate with an account from the non-Windows Realm:.
Start the GSS client:. COM Kerberos realm, and the host is krbhost. Received message: "Kerberos interop works great. NOOP token. COM", lifetime , flags , locally initiated, open. Signature verified. Create a sample2 service account with the following example command:. Set the servicePrincipalName on the service account with the following example command:.
An example of the command and the subsequent output from the sample follows. The output of gssserver running on Windows Server looks similar to the following:. Connect and share knowledge within a single location that is structured and easy to search. I believe that Windows customers have all encrypted ticket rc4-hmac and this will not allow things work and I suspect that one of my problems is out there.
As the usage message after the error indicates, ktpass in Windows Server only supports DES ciphered keys. Check what version of Support Tools for Microsoft Windows is installed. Maybe you have old SP1 version, but need SP2. Sign up to join this community. The best answers are voted up and rise to the top.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Windows Server -Ktpass - crypto: enum value 'rc4-hmac' is not known Ask Question. Asked 8 years, 5 months ago. Active 6 years ago. Viewed 3k times.
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