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Re: Squit with NTLM and Kerberos auth => a error

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Hi Marcus,

no i don't know if user if NegoEx, on the network they have more 25000 desktop.

I change auth, put only NTLM but same problems, a lot of users are not allowed

GENSEC login failed: NT_STATUS_INVALID_PARAMETER
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE

they have commercial support on squid ?

regards
olivier



2015-11-05 22:39 GMT+01:00 Markus Moeller <huaraz@xxxxxxxxxxxxxxxx>:
 
Hi Olivier,
 
  I think on some of your newer clients you have an issue with Negotiate and NTLM fallback. If I look at
 
 
If I interpret this correctly the client will try NegoEx after failing with Kerberos and before trying NTLM.  If on the client NegoEx is successful then NTLM will not be attempted.  And I think that is the case here.  Do you know if NegoEx is used on the client ? 
 
 
Does anybody else know about NegoEx ?
 
Markus
 
 
 
Sent: Tuesday, November 03, 2015 9:22 AM
Subject: Re: Squit with NTLM and Kerberos auth => a error
 
that's said that squid can by used with Windows AD ?


 
2015-11-02 22:46 GMT+01:00 Markus Moeller <huaraz@xxxxxxxxxxxxxxxx>:
 
Hi Olivier,
 
If I decode a token I see
 
/base64> hexdump -c base64_dec.out
0000000   ` 201 236 006 006   + 006 001 005 005 002 240 201 223   0 201
0000010 220 240 032   0 030 006  \n   + 006 001 004 001 202   7 002 002
0000020 036 006  \n   + 006 001 004 001 202   7 002 002  \n 242   r 004
0000030   p   N   E   G   O   E   X   T   S  \0  \0  \0  \0  \0  \0  \0
0000040  \0   `  \0  \0  \0   p  \0  \0  \0 020 366   L   3   & 023 256
0000050   O 271 216   4 305  \f 200   !  \t 034 340   # 327 322 177   _
0000060 211 202   > 254   {   g 234 325 225 001 022 225  \f 323 276   A
0000070 206 024   6 367   ;   .  \0   C 273  \0  \0  \0  \0  \0  \0  \0
0000080  \0   `  \0  \0  \0 001  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
0000090  \0   E   r   |   2   2   E 213   H 277 331   *   k 240   ^ 244
00000a0  \n
00000a1
 

That is not supported.

Markus
 
 
"Olivier CALVANO" <o.calvano@xxxxxxxxx> wrote in message news:CAJajPefqOygT5zsYW7fWszwRTTxN-r1Pd-U73XDfoNax9dLHkA@xxxxxxxxxxxxxx...
Hi

i test a authentification AD with Kerberos/Ntlm

### negotiate kerberos and ntlm authentication
auth_param negotiate program /usr/local/bin/negotiate_wrapper --ntlm /usr/bin/ntlm_auth --diagnostics --helper-protocol=squid-2.5-ntlmssp --kerberos /usr/lib64/squid/squid_kerb_auth -d -s GSS_C_NO_NAME
auth_param negotiate children 160 startup=5 idle=1
auth_param negotiate keep_alive on

## Module d'authentification NTLM
auth_param ntlm program /usr/bin/ntlm_auth --diagnostics --helper-protocol=squid-2.5-ntlmssp
auth_param ntlm children 160 startup=5 idle=1
auth_param ntlm keep_alive on

## Si echec du NTLM proposer la fenetre d'authentification
auth_param basic program /usr/bin/ntlm_auth --diagnostics --helper-protocol=squid-2.5-basic
auth_param basic children 40 startup=5 idle=1
auth_param basic realm Company proxy-caching web server
auth_param basic credentialsttl 2 hours


i have a lot of user that works, but for other user, squid request Login/pass in loop.

In cache.log i have:

2015/11/02 17:37:57| squid_kerb_auth: gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error
2015/11/02 17:37:57 kid1| ERROR: Negotiate Authentication validating user. Error returned 'BH gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error'
GENSEC login failed: NT_STATUS_LOGON_FAILURE
2015/11/02 17:37:58| squid_kerb_auth: Got 'YR YIGeBgYrBgEFBQKggZMwgZCgGjAYBgorBgEEAYI3AgIeBgorBgEEAYI3AgIKonIEcE5FR09FWFRTAAAAAAAAAABgAAAAcAAAABD2TDMmE65PuY40xQyAIQkc4CPX0n9fiYI+rHtnnNWVARKVDNO+QYYUNvc7LgBDuwAAAAAAAAAAYAAAAAEAAAAAAAAAAAAAAEVyfDIyRYtIv9kqa6BepAo=' from squid (length: 219).
2015/11/02 17:37:58| squid_kerb_auth: Decode 'YIGeBgYrBgEFBQKggZMwgZCgGjAYBgorBgEEAYI3AgIeBgorBgEEAYI3AgIKonIEcE5FR09FWFRTAAAAAAAAAABgAAAAcAAAABD2TDMmE65PuY40xQyAIQkc4CPX0n9fiYI+rHtnnNWVARKVDNO+QYYUNvc7LgBDuwAAAAAAAAAAYAAAAAEAAAAAAAAAAAAAAEVyfDIyRYtIv9kqa6BepAo=' (decoded length: 161).
2015/11/02 17:37:58| squid_kerb_auth: gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error
2015/11/02 17:37:58 kid1| ERROR: Negotiate Authentication validating user. Error returned 'BH gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error'
2015/11/02 17:37:58| squid_kerb_auth: Got 'YR YIGeBgYrBgEFBQKggZMwgZCgGjAYBgorBgEEAYI3AgIeBgorBgEEAYI3AgIKonIEcE5FR09FWFRTAAAAAAAAAABgAAAAcAAAABH2TDMmE65PuY40xQyAIQlCKZmWETDY7iZgTnIeQF9VidD8h6SKLzwap1w7iI5lcwAAAAAAAAAAYAAAAAEAAAAAAAAAAAAAAEVyfDIyRYtIv9kqa6BepAo=' from squid (length: 219).
2015/11/02 17:37:58| squid_kerb_auth: Decode 'YIGeBgYrBgEFBQKggZMwgZCgGjAYBgorBgEEAYI3AgIeBgorBgEEAYI3AgIKonIEcE5FR09FWFRTAAAAAAAAAABgAAAAcAAAABH2TDMmE65PuY40xQyAIQlCKZmWETDY7iZgTnIeQF9VidD8h6SKLzwap1w7iI5lcwAAAAAAAAAAYAAAAAEAAAAAAAAAAAAAAEVyfDIyRYtIv9kqa6BepAo=' (decoded length: 161).
2015/11/02 17:37:58| squid_kerb_auth: gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error
2015/11/02 17:37:58 kid1| ERROR: Negotiate Authentication validating user. Error returned 'BH gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error'
2015/11/02 17:37:58| squid_kerb_auth: Got 'YR YIGeBgYrBgEFBQKggZMwgZCgGjAYBgorBgEEAYI3AgIeBgorBgEEAYI3AgIKonIEcE5FR09FWFRTAAAAAAAAAABgAAAAcAAAABL2TDMmE65PuY40xQyAIQlOCybIQKGs/hmFlEu3FzYMQIag5ivNn4JcpRWBrJ5vMwAAAAAAAAAAYAAAAAEAAAAAAAAAAAAAAEVyfDIyRYtIv9kqa6BepAo=' from squid (length: 219).
2015/11/02 17:37:58| squid_kerb_auth: Decode 'YIGeBgYrBgEFBQKggZMwgZCgGjAYBgorBgEEAYI3AgIeBgorBgEEAYI3AgIKonIEcE5FR09FWFRTAAAAAAAAAABgAAAAcAAAABL2TDMmE65PuY40xQyAIQlOCybIQKGs/hmFlEu3FzYMQIag5ivNn4JcpRWBrJ5vMwAAAAAAAAAAYAAAAAEAAAAAAAAAAAAAAEVyfDIyRYtIv9kqa6BepAo=' (decoded length: 161).
2015/11/02 17:37:58| squid_kerb_auth: gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error
2015/11/02 17:37:58 kid1| ERROR: Negotiate Authentication validating user. Error returned 'BH gss_accept_sec_context() failed: An unsupported mechanism was requested. Unknown error'
GENSEC login failed: NT_STATUS_LOGON_FAILURE
GENSEC login failed: NT_STATUS_LOGON_FAILURE




anyone know this problems ?

regards
Olivier

 

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