HttpClient validates a Kerberos secure web page. NTLM login did not work

Question

HttpClient validates a Kerberos secure web page. NTLM login did not work

I need to write a program that checks our company’s Kerberos secure site. I try it with HttpClient and get the following error:

KrbException: Server not found in Kerberos database (7)
    at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:61)
    at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:185)
        ...

I wrote NTLM login 5 months ago, but it doesn’t work for this secure Kerberos site. I think Nego2 is activated, so it does not return to NTLM if Kerberos fails.

I read the article on Kerberos Wikipedia: http://en.wikipedia.org/wiki/Kerberos_ (protocol) , and I think the problem is that TGS does not find the requested service in the database. I think this is because I get a ticket before the error (I think this is a TGT).

Found ticket for userid@EXAMPLE.COM to go to krbtgt/EXAMPLE.COM@EXAMPLE.COM expiring on Thu May 31 01:35:56 CEST 2012

Thus, the error that occurred during the "Authorization of customer service" → 2. (see. Wikipedia article)

, kerberos, IE ( , ).

, : TGS Kerberos, IE?

, , , :

- Windows 7
Firefox 9.0.1
Chrome 19.0.1084.52
Safari 5.0.2
IE Version 8.0.7600.16385

Java:

    System.setProperty("java.security.auth.login.config", "file://c:/temp/jaas.conf");
    System.setProperty("java.security.krb5.conf", "c:/winnt/krb5.ini");
    System.setProperty("sun.security.krb5.debug", "true");
    System.setProperty("javax.security.auth.useSubjectCredsOnly","false");

    DefaultHttpClient httpclient = new DefaultHttpClient();
    try {
        httpclient.getAuthSchemes().register(AuthPolicy.SPNEGO, new SPNegoSchemeFactory());

        Credentials use_jaas_creds = new Credentials() {

            public String getPassword() {
                return null;
            }

            public Principal getUserPrincipal() {
                return null;
            }

        };

        httpclient.getCredentialsProvider().setCredentials(
                new AuthScope(null, -1, null),
                use_jaas_creds);

        HttpUriRequest request = new HttpGet("url.com:port/site"); //Kerberos secured url
        HttpResponse response = httpclient.execute(request);
        HttpEntity entity = response.getEntity();

        System.out.println("----------------------------------------");
        System.out.println(response.getStatusLine());
        System.out.println("----------------------------------------");
        if (entity != null) {
            System.out.println(EntityUtils.toString(entity));
        }
        System.out.println("----------------------------------------");

        // This ensures the connection gets released back to the manager
        EntityUtils.consume(entity);

jaas.conf

com.sun.security.jgss.login {
com.sun.security.auth.module.Krb5LoginModule required client=TRUE;
};
com.sun.security.jgss.initiate {
com.sun.security.auth.module.Krb5LoginModule required client=TRUE;
};
com.sun.security.jgss.accept {
com.sun.security.auth.module.Krb5LoginModule required client=TRUE;
};

krb5.ini

[logging]
 default = FILE:log/krb5libs.log
 kdc = FILE:log/krb5kdc.log
 admin_server = FILE:log/kadmind.log

[libdefaults]
 ticket_lifetime = 24000
 default_realm = EXAMPLE.COM
 dns_lookup_realm = false
 dns_lookup_kdc = false

[realms]
 EXAMPLE.COM = {
  kdc = url
  admin_server = url
 }

[domain_realm]
 url.com = EXAMPLE.COM

[kdc]
 profile = /var/kerberos/krb5kdc/kdc.conf

[appdefaults]
 pam = {
   debug = false
   ticket_lifetime = 36000
   renew_lifetime = 36000
   forwardable = true
   krb4_convert = false
 }

:

log4j:WARN No appenders could be found for logger (org.apache.http.impl.conn.BasicClientConnectionManager).
log4j:WARN Please initialize the log4j system properly.
Kerberos-Benutzername [user]: user
Kerberos-Passwort für user: *******
Using builtin default etypes for default_tkt_enctypes
default etypes for default_tkt_enctypes: 3 1 23 16 17.
Using builtin default etypes for default_tkt_enctypes
default etypes for default_tkt_enctypes: 3 1 23 16 17.
>>> KrbAsReq calling createMessage
>>> KrbAsReq in createMessage
>>> KrbKdcReq send: kdc=kdcurl UDP:88, timeout=30000, number of retries =3, #bytes=155
>>> KDCCommunication: kdc=kdcurl UDP:88, timeout=30000,Attempt =1, #bytes=155
>>> KrbKdcReq send: #bytes read=220
>>> KrbKdcReq send: #bytes read=220
>>> KDCRep: init() encoding tag is 126 req type is 11
>>>KRBError:
     sTime is Thu May 31 08:46:29 CEST 2012 1338446789000
     suSec is 51983
     error code is 25
     error Message is Additional pre-authentication required
     realm is EXAMPLE.COM
     sname is krbtgt/EXAMPLE.COM
     eData provided.
     msgType is 30
>>>Pre-Authentication Data:
     PA-DATA type = 11
     PA-ETYPE-INFO etype = 23
>>>Pre-Authentication Data:
     PA-DATA type = 2
     PA-ENC-TIMESTAMP
>>>Pre-Authentication Data:
     PA-DATA type = 15
AcquireTGT: PREAUTH FAILED/REQUIRED, re-send AS-REQ
Using builtin default etypes for default_tkt_enctypes
default etypes for default_tkt_enctypes: 3 1 23 16 17.
Pre-Authentication: Set preferred etype = 23
>>>KrbAsReq salt is EXAMPLE.COMuser
Pre-Authenticaton: find key for etype = 23
AS-REQ: Add PA_ENC_TIMESTAMP now
>>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType
>>> KrbAsReq calling createMessage
>>> KrbAsReq in createMessage
>>> KrbKdcReq send: kdc=kdcurl UDP:88, timeout=30000, number of retries =3, #bytes=219
>>> KDCCommunication: kdc=kdcurl UDP:88, timeout=30000,Attempt =1, #bytes=219
>>> KrbKdcReq send: #bytes read=100
>>> KrbKdcReq send: #bytes read=100
>>> KDCRep: init() encoding tag is 126 req type is 11
>>>KRBError:
     sTime is Thu May 31 08:46:29 CEST 2012 1338446789000
     suSec is 114485
     error code is 52
     error Message is Response too big for UDP, retry with TCP
     realm is EXAMPLE.COM
     sname is krbtgt/EXAMPLE.COM
     msgType is 30
>>> KrbKdcReq send: kdc=kdcurl TCP:88, timeout=30000, number of retries =3, #bytes=219
>>>DEBUG: TCPClient reading 3277 bytes
>>> KrbKdcReq send: #bytes read=3277
>>> KrbKdcReq send: #bytes read=3277
>>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType
>>> KrbAsRep cons in KrbAsReq.getReply user
Using builtin default etypes for default_tkt_enctypes
default etypes for default_tkt_enctypes: 3 1 23 16 17.
Found ticket for user@EXAMPLE.COM to go to krbtgt/EXAMPLE.COM@EXAMPLE.COM expiring on Thu May 31 18:46:29 CEST 2012
Entered Krb5Context.initSecContext with state=STATE_NEW
Service ticket not found in the subject
>>> Credentials acquireServiceCreds: same realm
Using builtin default etypes for default_tgs_enctypes
default etypes for default_tgs_enctypes: 3 1 23 16 17.
>>> CksumType: sun.security.krb5.internal.crypto.RsaMd5CksumType
>>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType
>>> KrbKdcReq send: kdc=kdcurl UDP:88, timeout=30000, number of retries =3, #bytes=3298
>>> KDCCommunication: kdc=kdcurl UDP:88, timeout=30000,Attempt =1, #bytes=3298
>>> KrbKdcReq send: #bytes read=110
>>> KrbKdcReq send: #bytes read=110
>>> KDCRep: init() encoding tag is 126 req type is 13
>>>KRBError:
     sTime is Thu May 31 08:46:29 CEST 2012 1338446789000
     suSec is 192613
     error code is 7
     error Message is Server not found in Kerberos database
     realm is EXAMPLE.COM
     sname is HTTP/url.com:port
     msgType is 30
KrbException: Server not found in Kerberos database (7)
    at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:61)
    at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:185)
    at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:294)
    at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:106)
    at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:562)
    at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:594)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:230)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
    at sun.security.jgss.spnego.SpNegoContext.GSS_initSecContext(SpNegoContext.java:851)
    at sun.security.jgss.spnego.SpNegoContext.initSecContext(SpNegoContext.java:309)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:230)
    at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
    at org.apache.http.impl.auth.GGSSchemeBase.generateGSSToken(GGSSchemeBase.java:99)
    at org.apache.http.impl.auth.SPNegoScheme.generateToken(SPNegoScheme.java:80)
    at org.apache.http.impl.auth.GGSSchemeBase.authenticate(GGSSchemeBase.java:155)
    at org.apache.http.impl.auth.SPNegoScheme.authenticate(SPNegoScheme.java:75)
    at org.apache.http.client.protocol.RequestAuthenticationBase.authenticate(RequestAuthenticationBase.java:125)
    at org.apache.http.client.protocol.RequestAuthenticationBase.process(RequestAuthenticationBase.java:83)
    at org.apache.http.client.protocol.RequestTargetAuthentication.process(RequestTargetAuthentication.java:80)
    at org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttpProcessor.java:109)
    at org.apache.http.protocol.HttpRequestExecutor.preProcess(HttpRequestExecutor.java:176)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:516)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
    at mypackage.ClientKerberosAuthentication.main(ClientKerberosAuthentication.java:152)
Caused by: KrbException: Identifier doesn't match expected value (906)
    at sun.security.krb5.internal.KDCRep.init(KDCRep.java:133)
    at sun.security.krb5.internal.TGSRep.init(TGSRep.java:58)
    at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:53)
    at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:46)
    ... 25 more
----------------------------------------
HTTP/1.1 401 Unauthorized
----------------------------------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Draft//EN">
<HTML>
<HEAD>
<TITLE>Error 401--Unauthorized</TITLE>
</HEAD>
<BODY bgcolor="white">
<FONT FACE=Helvetica><BR CLEAR=all>
<TABLE border=0 cellspacing=5><TR><TD><BR CLEAR=all>
<FONT FACE="Helvetica" COLOR="black" SIZE="3"><H2>Error 401--Unauthorized</H2>
</FONT></TD></TR>
</TABLE>
<TABLE border=0 width=100% cellpadding=10><TR><TD VALIGN=top WIDTH=100% BGCOLOR=white><FONT FACE="Courier New"><FONT FACE="Helvetica" SIZE="3"><H3>From RFC 2068 <i>Hypertext Transfer Protocol -- HTTP/1.1</i>:</H3>
</FONT><FONT FACE="Helvetica" SIZE="3"><H4>10.4.2 401 Unauthorized</H4>
</FONT><P><FONT FACE="Courier New">The request requires user authentication. The response MUST include a WWW-Authenticate header field (section 14.46) containing a challenge applicable to the requested resource. The client MAY repeat the request with a suitable Authorization header field (section 14.8). If the request already included Authorization credentials, then the 401 response indicates that authorization has been refused for those credentials. If the 401 response contains the same challenge as the prior response, and the user agent has already attempted authentication at least once, then the user SHOULD be presented the entity that was given in the response, since that entity MAY include relevant diagnostic information. HTTP access authentication is explained in section 11.</FONT></P>
</FONT></TD></TR>
</TABLE>

</BODY>
</HTML>

----------------------------------------

+4

java httpclient kerberos

SCBoy 31 '12 8:16

3

.
(true) SPNegoSchemeFactory.


  httpclient.getAuthSchemes().register(AuthPolicy.SPNEGO, new SPNegoSchemeFactory(true));

sname HTTP/url.com: port to HTTP/url.com.
: https://issues.apache.org/jira/browse/HTTPCLIENT-966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

+2

Chuan-King 20 . '13 4:12

httpclient 3 kerberos ( ), . https://github.com/DovAmir/httpclientAuthHelper

DefaultHttpClient httpclient = new DefaultHttpClient();
AuthUtils.securityLogging(SecurityLogType.KERBEROS,true);
CredentialsUtils.setKerberosCredentials(client, new UsernamePasswordCredentials("xxx", "xxx"), "domain", "kdc");
client.executeMethod(httpget);

+2

dov.amir 22 '14 17:19

source share

Michael-O · Accepted Answer · 2012-06-03T11:23:42+0000

.

Active Directory SPN. , HttpClient.
Active Directory SPN.

:

, . , , . LDAP, HTTP, FTP .. SPN . . , HTTP-. AD . . .
? SPN HTTP/<FQDN>. , .

HTTPClient, SPNEGO. , .

HttpClient validates a Kerberos secure web page. NTLM login did not work

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