nfs and kerberos authentification problem.

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Hello everybody,

I am trying to set up kerberos authentification with nfs but it doesn't succeed. I have created to principals for the client and the server. I have added the client's principal to the keytab file by setting des-encryption (with ktadd -e des-cbc-crc:normal nfs/ordi-francois.homenetwork.net). I have changed the /etc/krb5.conf on the client file to use des encryption. So, it's set like this;

[libdefaults]
  default_realm = HOMENETWORK.NET
  default_tkt_enctypes = aes256-cts-hmac-sha1-96 des-cbc-crc
  default_tgs_enctypes = aes256-cts-hmac-sha1-96 des-cbc-crc
permitted_enctypes = aes256-cts-hmac-sha1-96 rc4-hmac des-cbc-crc des3-hmac-sha1
  forwardable = true

[realms]
  HOMENETWORK.NET = {
     admin_server = pc-francois.homenetwork.net:749
     kdc = pc-francois.homenetwork.net:88
     }

[domain_realm]
  .homenetwork.net = HOMENETWORK.NET
  homenetwork.net = HOMENETWORK.NET

But, it doesn't succeed. I can see in the log of the server (pc-francois) that the client (ordi-francois) get's a kerberos ticket but each time I mount a nfs share, it fails with this error:
mount.nfs: permission denied.

Does anybody know what's happening ?
I have put the log of the server in the attached file.

Thanks in advance for your help,

François Valenduc



Sep  3 19:36:22 pc-francois mountd[7747]: authenticated mount request from ordi-francois:865 for /home/francois (/home/francois)
Sep  3 19:36:22 pc-francois krb5kdc[9787]: AS_REQ (2 etypes {18 1}) 192.168.1.3: ISSUE: authtime 1220463382, etypes {rep=1 tkt=18 ses=18}, nfs/ordi-francois.homenetwork.net@xxxxxxxxxxxxxxx for krbtgt/HOMENETWORK.NET@xxxxxxxxxxxxxxx
Sep  3 19:36:22 pc-francois krb5kdc[9787]: AS_REQ (2 etypes {18 1}) 192.168.1.3: ISSUE: authtime 1220463382, etypes {rep=1 tkt=18 ses=18}, nfs/ordi-francois.homenetwork.net@xxxxxxxxxxxxxxx for krbtgt/HOMENETWORK.NET@xxxxxxxxxxxxxxx
Sep  3 19:36:22 pc-francois krb5kdc[9787]: TGS_REQ (2 etypes {18 1}) 192.168.1.3: ISSUE: authtime 1220463382, etypes {rep=18 tkt=1 ses=1}, nfs/ordi-francois.homenetwork.net@xxxxxxxxxxxxxxx for nfs/pc-francois.homenetwork.net@xxxxxxxxxxxxxxx
Sep  3 19:36:22 pc-francois krb5kdc[9787]: TGS_REQ (2 etypes {18 1}) 192.168.1.3: ISSUE: authtime 1220463382, etypes {rep=18 tkt=1 ses=1}, nfs/ordi-francois.homenetwork.net@xxxxxxxxxxxxxxx for nfs/pc-francois.homenetwork.net@xxxxxxxxxxxxxxx
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: leaving poll
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: handling null request
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: readline: read 1106 chars into buffer of size 2048: \x \x6082022206092a864886f71201020201006e8202113082020da003020105a10302010ea20703050020000000a3820125618201213082011da003020105a11b825f74da9da214cf8780d29b9e4d2020640fbd2c598eb5e23ec084f9a8...

Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: in_handle:
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: length 0
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: in_tok:
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: length 550
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0000: 6082 0222 0609 2a86 4886 f712 0102 0201  `.."..*.H.......
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0010: 006e 8202 1130 8202 0da0 0302 0105 a103  .n...0..........
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0020: 0201 0ea2 0703 0500 2000 0000 a382 0125  ........ ......%
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0030: 6182 0121 3082 011d a003 0201 05a1 111b  a..!0...........
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0040: 0f48 4f4d 454e 4554 574f 524b 2e4e 4554  .HOMENETWORK.NET
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0050: a22d 302b a003 0201 03a1 2430 221b 036e  .-0+......$0"..n
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0060: 6673 1b1b 7063 2d66 7261 6e63 6f69 732e  fs..pc-francois.
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]:   0070: 686f 6d65 6e65 7477 6f72 6b2e 6e65 74a3  homenetwork.net.

...

Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: sname = nfs/ordi-francois.homenetwork.net@xxxxxxxxxxxxxxx
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: DEBUG: serialize_krb5_ctx: lucid version!
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: prepare_krb5_rfc1964_buffer: serializing keys with enctype 4 and length 8
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: doing downcall
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: \x01000000 2147483647 -1 -1 0 krb5 \x0000000000000000b46525b6ff7f00000000000000000000000000000000000016acbf48c5090c26090000002a864886f7120102020400000008000000a2df25511fa8fb680400000008000000522fd5a1ef580b98
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: sending null reply
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: writing message: \x \x6082022206092a864886f71201020201006e8202113082020da003020105a10302010ea20703050020000000a3820125618201213082011da003020105a11
...

Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: finished handling null request
Sep  3 19:36:22 pc-francois rpc.svcgssd[7008]: entering poll


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