[squid-users] kerberos authentication with kerberos groups

Jeroen Ruijter jeroen.ruijter at borsboomhamm.nl
Tue Feb 20 16:32:26 UTC 2018 

I believe this has to be the problem, but how do I solve it? Its almost at the end of the whole listing

support_ldap.cc(333): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Search ldap server with bind path "" and filter: (objectclass=*)
support_ldap.cc(602): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Search ldap entries for attribute : schemaNamingContext
support_ldap.cc(645): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: 1 ldap entry found with attribute : schemaNamingContext
support_ldap.cc(342): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Search ldap server with bind path CN=Schema,CN=Configuration,DC=bnh,DC=local and filter: (ldapdisplayname=samaccountname)




kerberos_ldap_group.cc(283): pid=2951 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2951 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRaamregeling@
support_group.cc(447): pid=2951 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRaamregeling  Domain
support_netbios.cc(83): pid=2951 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2951 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2951 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2951 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2953 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2953 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRaamregeling@
support_group.cc(447): pid=2953 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRaamregeling  Domain
support_netbios.cc(83): pid=2953 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2953 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2953 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2953 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2952 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2952 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRaamregeling@
support_group.cc(447): pid=2952 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRaamregeling  Domain
support_netbios.cc(83): pid=2952 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2952 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2952 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2952 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
2018/02/20 17:02:21 kid1| helperOpenServers: Starting 5/5 'ext_kerberos_ldap_group_acl' processes
kerberos_ldap_group.cc(283): pid=2954 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2954 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRaamregeling@
support_group.cc(447): pid=2954 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRaamregeling  Domain
support_netbios.cc(83): pid=2954 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2954 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2954 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2954 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2955 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2955 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRaamregeling@
support_group.cc(447): pid=2955 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRaamregeling  Domain
support_netbios.cc(83): pid=2955 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2955 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2955 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2955 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2956 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2956 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRestrictedAdult@
support_group.cc(447): pid=2956 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRestrictedAdult  Domain
support_netbios.cc(83): pid=2956 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2956 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2956 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2956 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2957 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2957 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRestrictedAdult@
support_group.cc(447): pid=2957 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRestrictedAdult  Domain
support_netbios.cc(83): pid=2957 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2957 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2957 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2957 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2958 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2958 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRestrictedAdult@
support_group.cc(447): pid=2958 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRestrictedAdult  Domain
support_netbios.cc(83): pid=2958 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2958 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2958 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2958 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2959 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2959 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRestrictedAdult@
support_group.cc(447): pid=2959 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRestrictedAdult  Domain
support_netbios.cc(83): pid=2959 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2959 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2959 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2959 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(283): pid=2960 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Starting version 1.3.1sq
support_group.cc(382): pid=2960 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group list ADGroupRestrictedAdult@
support_group.cc(447): pid=2960 :2018/02/20 17:02:21| kerberos_ldap_group: INFO: Group ADGroupRestrictedAdult  Domain
support_netbios.cc(83): pid=2960 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: Netbios list NULL
support_netbios.cc(87): pid=2960 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No netbios names defined.
support_lserver.cc(82): pid=2960 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: ldap server list NULL
support_lserver.cc(86): pid=2960 :2018/02/20 17:02:21| kerberos_ldap_group: DEBUG: No ldap servers defined.
kerberos_ldap_group.cc(381): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: INFO: Got User: Jeroen.Ruijter Domain: BNH.LOCAL
support_member.cc(63): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: User domain loop: group at domain ADGroupRaamregeling@
support_member.cc(91): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Default domain loop: group at domain ADGroupRaamregeling@
support_member.cc(93): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Found group at domain ADGroupRaamregeling@
support_ldap.cc(898): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Setup Kerberos credential cache
support_krb5.cc(127): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Set credential cache to MEMORY:squid_ldap_2951
support_krb5.cc(138): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Get default keytab file name
support_krb5.cc(144): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Got default keytab file name /etc/krb5.keytab
support_krb5.cc(158): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Get principal name from keytab /etc/krb5.keytab
support_krb5.cc(169): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Keytab entry has realm name: BNH.LOCAL
support_krb5.cc(189): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Found principal  name: HTTP/bhlnx03.bnh.local at BNH.LOCAL
support_krb5.cc(205): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Got principal name HTTP/bhlnx03.bnh.local at BNH.LOCAL
support_krb5.cc(269): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Stored credentials
support_ldap.cc(927): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Initialise ldap connection
support_ldap.cc(933): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Canonicalise ldap server name for domain BNH.LOCAL
support_resolv.cc(379): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved SRV _ldap._tcp.BNH.LOCAL record to BHAD02.bnh.local
support_resolv.cc(379): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved SRV _ldap._tcp.BNH.LOCAL record to BHAD01.bnh.local
support_resolv.cc(379): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved SRV _ldap._tcp.BNH.LOCAL record to bhad02.bnh.local
support_resolv.cc(379): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved SRV _ldap._tcp.BNH.LOCAL record to bhad01.bnh.local
support_resolv.cc(207): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved address 1 of BNH.LOCAL to BHAD02.bnh.local
support_resolv.cc(207): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved address 2 of BNH.LOCAL to BHAD02.bnh.local
support_resolv.cc(207): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved address 3 of BNH.LOCAL to BHAD02.bnh.local
support_resolv.cc(207): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved address 4 of BNH.LOCAL to BHAD01.bnh.local
support_resolv.cc(207): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved address 5 of BNH.LOCAL to BHAD01.bnh.local
support_resolv.cc(207): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Resolved address 6 of BNH.LOCAL to BHAD01.bnh.local
support_resolv.cc(407): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Adding BNH.LOCAL to list
support_resolv.cc(443): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Sorted ldap server names for domain BNH.LOCAL:
support_resolv.cc(445): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Host: BHAD01.bnh.local Port: 389 Priority: 0 Weight: 100
support_resolv.cc(445): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Host: BHAD02.bnh.local Port: 389 Priority: 0 Weight: 100
support_resolv.cc(445): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Host: BNH.LOCAL Port: -1 Priority: -2 Weight: -2
support_ldap.cc(942): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Setting up connection to ldap server BHAD01.bnh.local:389
support_ldap.cc(953): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Bind to ldap server with SASL/GSSAPI
support_ldap.cc(967): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Successfully initialised connection to ldap server BHAD01.bnh.local:389
support_ldap.cc(333): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Search ldap server with bind path "" and filter: (objectclass=*)
support_ldap.cc(602): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Search ldap entries for attribute : schemaNamingContext
support_ldap.cc(645): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: 1 ldap entry found with attribute : schemaNamingContext
support_ldap.cc(342): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Search ldap server with bind path CN=Schema,CN=Configuration,DC=bnh,DC=local and filter: (ldapdisplayname=samaccountname)
support_ldap.cc(345): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Found 0 ldap entries
support_ldap.cc(350): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Determined ldap server not as an Active Directory server
support_ldap.cc(1061): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: ERROR: Error determining ldap server type: Operations error
support_member.cc(104): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: INFO: User Jeroen.Ruijter is not member of group at domain ADGroupRaamregeling@
support_member.cc(119): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: Default group loop: group at domain ADGroupRaamregeling@
kerberos_ldap_group.cc(416): pid=2951 :2018/02/20 17:02:27| kerberos_ldap_group: DEBUG: ERR

-----Oorspronkelijk bericht-----
Van: Jeroen Ruijter 
Verzonden: maandag 19 februari 2018 11:19
Aan: 'Amos Jeffries'; squid-users at lists.squid-cache.org
Onderwerp: RE: [squid-users] kerberos authentication with kerberos groups

Do you advise to use capitals or small characters for the domain name?


-----Oorspronkelijk bericht-----
Van: squid-users [mailto:squid-users-bounces at lists.squid-cache.org] Namens Amos Jeffries
Verzonden: vrijdag 16 februari 2018 18:58
Aan: squid-users at lists.squid-cache.org
Onderwerp: Re: [squid-users] kerberos authentication with kerberos groups

On 17/02/18 02:02, Jeroen Ruijter wrote:
> I'm trying to replace my basic ldap authentication by kerberos single 
> sign on.
> 

NP: Despite what some claim, SSO is not unique to NTLM and Kerberos authentication. It is a behaviour of the tools used. As such it can be done with *any* authentication type if the tools used perform the necessary behaviour.



> The user can succesfully login with single sign on, but I have 
> restriction on groups and that is where it goes wrong.

What exactly does this "going wrong" look like?

Also, what version of Squid are you working with?
 (the "squid -v" output please)

> 
> I would like to use -r to trim the domain name, but when I do so it 
> seems to work even less.
> 
> Someone any ideas what to try, I believe the system is loking wrong in 
> active directory but adding -b OU=Users,DC=yyy,DC=local does not help 
> me further

You have some things looking for ".local" and others for ".LOCAL". I'm not sure if case insensitivity exists in all those places they are being used, so that is one potential cause of problems.


> =======
> 
>  
> 
> auth_param negotiate program /usr/sbin/negotiate_wrapper_auth -d 
> --ntlm /usr/bin/ntlm_auth --diagnostics 
> --helper-protocol=squid-2.5-ntlmssp
> --domain=yyy --kerberos /usr/sbin/negotiate_kerberos_auth -d -s 
> GSS_C_NO_NAME
> 
> auth_param negotiate children 20 startup=0 idle=1
> 
> auth_param negotiate keep_alive off
> 
>  
> 
> external_acl_type XXX_InternetAllowed ttl=3600 negative_ttl=3600 
> %LOGIN /usr/sbin/ext_kerberos_ldap_group_acl -b 
> OU=Users,OU=BenH,DC=yyy,DC=local -g AD_XXX_InternetAllowed at yyy.LOCAL 
> -d
> 
> external_acl_type RestrictedAdult ttl=3600 negative_ttl=3600 %LOGIN 
> /usr/sbin/ext_kerberos_ldap_group_acl -b 
> OU=Users,OU=BenH,DC=yyy,DC=local -g ADGroupRestrictedAdult at yyy.LOCAL 
> -d
> 
>  
> 
> acl XXX_InternetAllowed external XXX_InternetAllowed
> 
> acl XXX_Adult external XXX_Adult
> 

...
> 
> http_access deny auth !XXX_InternetAllowed

The above says the users entire login is to be rejected if they are not a member of the XXX_InternetAllowed group.

That should work but it is better to reject failed logins fully first, then do the group checks separately.

Like this:

 http_access deny !auth
 http_access deny !XXX_InternetAllowed all

> 
> http_access deny XXX_Adult XXX_AdultX
> 

you could gain a fair bit of performance back by making that check the dstdomain before the slow external lookup:

  http_access deny XXX_AdultX XXX_Adult all


> http_access allow localnet
> 
> http_access allow localhost
> 
> http_access deny all
> 
>  
> 
> ========
> 


...
> 
> support_ldap.cc(342): pid=7612 :2018/02/16 11:50:07|
> kerberos_ldap_group: DEBUG: Search ldap server with bind path 
> CN=Schema,CN=Configuration,DC=bnh,DC=local and filter:
> (ldapdisplayname=samaccountname)
> 
> support_ldap.cc(345): pid=7612 :2018/02/16 11:50:07|
> kerberos_ldap_group: DEBUG: Found 0 ldap entries
> 
> support_ldap.cc(350): pid=7612 :2018/02/16 11:50:07|
> kerberos_ldap_group: DEBUG: Determined ldap server not as an Active 
> Directory server
> 
> support_ldap.cc(1061): pid=7612 :2018/02/16 11:50:07|
> kerberos_ldap_group: ERROR: Error determining ldap server type:
> Operations error
> 
> support_member.cc(76): pid=7612 :2018/02/16 11:50:07|
> kerberos_ldap_group: INFO: User Administrator is not member of 
> group at domain AD_XXX_InternetAllowed at YYY.LOCAL
> 

Looks like it is working to me.

The helper tries several methods of locating a server, two fail but the third seems to work and produces the above result.


Amos

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