Could you help me to resolve the Kerberos error?
Zhutiemin
zhutiemin at huawei.com
Thu Jun 20 21:28:28 EDT 2013
PS:
But I use simple LDAP protocol, the result is ok.
So I suspect that there are some incorrectly configuration in AD.
I want to know what is the requirement of the Kerberos authentication, especially the configuration of AD and DNS.
Thank you very much!
The following section of code is a part of the entire project:
LdapContext ctx = null;
String ldapURL = "ldap://" + adIp + ":" + DEFAULT_NON_SEC_PORT;
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, ldapURL);
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, adminAccount);
env.put(Context.SECURITY_CREDENTIALS, adminPassword);
env.put("java.naming.ldap.attributes.binary", "objectSid");
ctx = new InitialLdapContext(env, null);
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
String searchFilter = "(CN=" + machineName + ")";
NamingEnumeration<SearchResult> results = ctx.search(changeDomainInfo(domain), searchFilter, constraints);
while (results.hasMoreElements())
{
SearchResult searchResult = (SearchResult)results.next();
Attributes attrs = searchResult.getAttributes();
if (attrs != null)
{
Object attValue = attrs.get("objectSid").get();
return getSIDasStringOfBytes((byte[])attValue);
}
}
From: Zhutiemin
Sent: 2013Äê6ÔÂ21ÈÕ 9:19
To: 'Darek'
Cc: kerberos at mit.edu
Subject: RE: Could you help me to resolve the Kerberos error?
Darek:
Thank you for your reply.
I will check the and Conduct an experiment to test it
I use Krb5LoginModule class to authenticate users using Kerberos protocols
It is defined in the configuration
AdServiceImplForKerberos {
com.sun.security.auth.module.Krb5LoginModule required client=TRUE useTicketCache=FALSE refreshKrb5Config=TRUE;
};
And I implement the authentication by LoginContext class
The following section of code is a part of the entire project:
LdapContext ctx = null;
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, ldapURL);
env.put(Context.SECURITY_AUTHENTICATION, "GSSAPI");
env.put(Context.SECURITY_PRINCIPAL, adminAccount);
env.put(Context.SECURITY_CREDENTIALS, adminPassword);
env.put("java.naming.ldap.attributes.binary", "objectSid");
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
String searchFilter = "(CN=" + machineName + ")";
NamingEnumeration<SearchResult> results =
ctx.search(changeDomainInfo(domain), searchFilter, constraints);
while (results.hasMoreElements())
{
SearchResult searchResult = (SearchResult)results.next();
Attributes attrs = searchResult.getAttributes();
if (attrs != null)
{
Object attValue = attrs.get("objectSid").get();
return getSIDasStringOfBytes((byte[])attValue);
}
}
From: Darek [mailto:fafaforza at gmail.com]
Sent: 2013Äê6ÔÂ20ÈÕ 22:27
To: Zhutiemin
Cc: kerberos at mit.edu
Subject: Re: Could you help me to resolve the Kerberos error?
> Server not found in Kerberos database
You should make sure that the forward and reverse DNS for your java application machine's IP address match, and that the hostname of the system is exactly the same as the reverse DNS.
So if your system's IP is 1.2.3.4, a reverse DNS lookup would resolve to java.company.com, and the system's hostname would be java.company.com,
On 6/20/2013 1:01 AM, Zhutiemin wrote:
Dear MIT Kerberos Team£º
My name is Tiemin Zhu, I am a software engineer of Huawei corporation .
I am getting following error with Kerberos Authentication. Could you help me to resolve this error?
But the result of LDAP Authentication is OK
Is this the configuration error in AD?
Do you have any document I could study?
Thanks so much!
This is the error:
[2013-05-25 03:34:01,765]--[ERROR]--[pool-1-thread-39]--[AdServiceImpl.java run() 920] - search fail.
javax.naming.AuthenticationException: GSSAPI [Root exception is javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]]
at com.sun.jndi.ldap.sasl.LdapSasl.saslBind(Unknown Source)
at com.sun.jndi.ldap.LdapClient.authenticate(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(Unknown Source)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.ldap.InitialLdapContext.<init>(Unknown Source)
at com.huawei.vds.service.platform.vdesktop.service.impl.AdServiceImpl$GetSidByIpForPrivilege.run(AdServiceImpl.java:892)
at com.huawei.vds.service.platform.vdesktop.service.impl.AdServiceImpl$GetSidByIpForPrivilege.run(AdServiceImpl.java:854)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Unknown Source)
at com.huawei.vds.service.platform.vdesktop.service.impl.AdServiceImpl.getSidByIp(AdServiceImpl.java:824)
at com.huawei.vds.service.platform.vdesktop.service.impl.AdServiceImpl.getSidByDomain(AdServiceImpl.java:787)
at com.huawei.vds.service.platform.vdesktop.service.impl.AdServiceImpl.getSidByMachineName(AdServiceImpl.java:734)
at com.huawei.vds.service.platform.vdesktop.task.CombineCreateInstanceTask.createInstance(CombineCreateInstanceTask.java:740)
at com.huawei.vds.service.platform.vdesktop.task.CombineCreateInstanceTask.createVm(CombineCreateInstanceTask.java:655)
at com.huawei.vds.service.platform.vdesktop.task.CombineCreateInstanceTask.combineCreateInstance(CombineCreateInstanceTask.java:503)
at com.huawei.vds.service.platform.vdesktop.task.CombineCreateInstanceTask.run(CombineCreateInstanceTask.java:317)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at com.huawei.vds.common.utils.threadpool.VDSThreadFactory$Task.run(VDSThreadFactory.java:92)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(Unknown Source)
... 32 more
Caused by: GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))
at sun.security.jgss.krb5.Krb5Context.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
... 33 more
Caused by: KrbException: Server not found in Kerberos database (7)
at sun.security.krb5.KrbTgsRep.<init>(Unknown Source)
at sun.security.krb5.KrbTgsReq.getReply(Unknown Source)
at sun.security.krb5.internal.CredentialsUtil.serviceCreds(Unknown Source)
at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(Unknown Source)
at sun.security.krb5.Credentials.acquireServiceCreds(Unknown Source)
... 36 more
Caused by: KrbException: Identifier doesn't match expected value (906)
at sun.security.krb5.internal.KDCRep.init(Unknown Source)
at sun.security.krb5.internal.TGSRep.init(Unknown Source)
at sun.security.krb5.internal.TGSRep.<init>(Unknown Source)
Best regards!
phone. +86 02989184490
mobile. +86 15249061480
email.zhutiemin at huawei.com<mailto:email.zhutiemin at huawei.com><mailto:email.zhutiemin at huawei.com><mailto:email.zhutiemin at huawei.com>
Tiemin Zhu
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