I'm putting together a java kerberos client and am having an issue
getting a SGT form IPA.  I get a TGT without issue, but when I submit
the TGS-REQ I get the following errors in the ipa log:

Nov 17 20:53:15 freeipa.rhelent.lan krb5kdc[7507](info): AS_REQ (1
etypes {17}) 192.168.2.129: ISSUE: authtime 1447811595, etypes {rep=17
tkt=18 ses=17}, HTTP/s4u.rhelent....@rhelent.lan for
krbtgt/rhelent....@rhelent.lan

Nov 17 20:53:15 freeipa.rhelent.lan krb5kdc[7507](info): TGS_REQ (1
etypes {17}) 192.168.2.129: PROCESS_TGS: authtime 0,  <unknown client>
for HTTP/ipa.rhelent....@rhelent.lan, ASN.1 structure is missing a
required field

Here's the TGS request:

Kerberos
    tgs-req
        pvno: 5
        msg-type: krb-tgs-req (12)
        padata: 1 item
            PA-DATA PA-TGS-REQ
                padata-type: kRB5-PADATA-TGS-REQ (1)
                    padata-value:
6e8201f8308201f4a003020105a10302010ea20703050000...
                        ap-req
                            pvno: 5
                            msg-type: krb-ap-req (14)
                            Padding: 0
                            ap-options: 00000000
                                0... .... = reserved: False
                                .0.. .... = use-session-key: False
                                ..0. .... = mutual-required: False
                            ticket
                                tkt-vno: 5
                                realm: RHELENT.LAN
                                sname
                                    name-type: kRB5-NT-PRINCIPAL (1)
                                    name-string: 2 items
                                        KerberosString: krbtgt
                                        KerberosString: RHELENT.LAN
                                enc-part
                                    etype: eTYPE-AES256-CTS-HMAC-SHA1-96 (18)
                                    kvno: 1
                                    cipher:
0efd7452dafeb94323bcf7f6adc373aab78ce179f42c4c11...
                            authenticator
                                etype: eTYPE-AES128-CTS-HMAC-SHA1-96 (17)
                                kvno: 255
                                cipher:
f40e91b920c6ae6bdc30a69d5f348bf106355a92da74ba74...
        req-body
            Padding: 0
            kdc-options: 00000000
                0... .... = reserved: False
                .0.. .... = forwardable: False
                ..0. .... = forwarded: False
                ...0 .... = proxiable: False
                .... 0... = proxy: False
                .... .0.. = allow-postdate: False
                .... ..0. = postdated: False
                .... ...0 = unused7: False
                0... .... = renewable: False
                .0.. .... = unused9: False
                ..0. .... = unused10: False
                ...0 .... = opt-hardware-auth: False
                .... ..0. = request-anonymous: False
                .... ...0 = canonicalize: False
                0... .... = constrained-delegation: False
                ..0. .... = disable-transited-check: False
                ...0 .... = renewable-ok: False
                .... 0... = enc-tkt-in-skey: False
                .... ..0. = renew: False
                .... ...0 = validate: False
            cname
                name-type: kRB5-NT-PRINCIPAL (1)
                name-string: 2 items
                    KerberosString: HTTP
                    KerberosString: s4u.rhelent.lan
            realm: RHELENT.LAN
            sname
                name-type: kRB5-NT-PRINCIPAL (1)
                name-string: 2 items
                    KerberosString: HTTP
                    KerberosString: ipa.rhelent.lan
            from: 2015-11-18 02:17:44 (UTC)
            till: 2015-11-18 10:17:44 (UTC)
            nonce: 604310537
            etype: 1 item
                ENCTYPE: eTYPE-AES128-CTS-HMAC-SHA1-96 (17)


Is there a field missing?

Thanks


Marc Boorshtein
CTO Tremolo Security
marc.boorsht...@tremolosecurity.com

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