Error validating user via ntlm

Similarly, in Windows, the identity of a user or computer must be authenticated before the user or computer has access to files, folders, and applications.

The following discussion provides detailed information about the configuration, management, and maintenance of authentication functions for Windows XP Professional–based clients, whether they are stand-alone clients or members of an Active Directory or other network environment.

When I try with Firefox or IE7 from an AD-integrated Windows XP machine all looks fine.

STABLE20) on linux with negotiate authentication in a M$ Active Directory environment.

This Squid Authenticatentlmhandlereply Error Validating User Via Ntlm error code has a numeric error number and a technical description.

In some cases the error may have more parameters in Squid Authenticatentlmhandlereply Error Validating User Via Ntlm format .

Please clarify your specific problem or add additional details to highlight exactly what you need.

As it's currently written, it’s hard to tell exactly what you're asking.

For information on how to obtain the Windows XP Professional Resource Kit in its entirety, please see

DNS Configuration On the Windows DNS server add a new A record entry for the proxy server's hostname and ensure a corresponding PTR (reverse DNS) entry is also created and works. LOCAL dns_lookup_kdc = no dns_lookup_realm = no ticket_lifetime = 24h default_keytab_name = /etc/squid3/PROXY.keytab ; for Windows 2003 default_tgs_enctypes = rc4-hmac des-cbc-crc des-cbc-md5 default_tkt_enctypes = rc4-hmac des-cbc-crc des-cbc-md5 permitted_enctypes = rc4-hmac des-cbc-crc des-cbc-md5 ; for Windows 2008 with AES ; default_tgs_enctypes = aes256-cts-hmac-sha1-96 rc4-hmac des-cbc-crc des-cbc-md5 ; default_tkt_enctypes = aes256-cts-hmac-sha1-96 rc4-hmac des-cbc-crc des-cbc-md5 ; permitted_enctypes = aes256-cts-hmac-sha1-96 rc4-hmac des-cbc-crc des-cbc-md5 [realms] EXAMPLE. LOCAL --smbservers=ads.example.local --smbworkgroup=EXAMPLE \ --enablewinbind --enablewinbindauth --smbsecurity=ads --smbrealm=EXAMPLE. LOCAL security = ads idmap config * : range = 16777216-33554431 winbind separator = template shell = /bin/false winbind use default domain = true winbind offline logon = false #--authconfig--end-line-- ; workgroup = EXAMPLE kerberos method = dedicated keytab dedicated keytab file = /etc/squid/PROXY.keytab #dedicated keytab file = /etc/krb5.keytab ; realm = IFOX. for my proxy server to have access in windows AD users and groups.

Check that the proxy is using the Windows DNS Server for name resolution and update /etc/accordingly. LOCAL \ --smbidmapuid="16777216-33554431" --smbidmapgid="16777216-33554431" --winbindseparator=" " \ --winbindtemplateshell="/bin/false" --enablewinbindusedefaultdomain --disablewinbindoffline \ --winbindjoin=Administrator --disablewins --disablecache --enablelocauthorize --updateall #--authconfig--start-line-- # Generated by authconfig on 2013/08/09 # DO NOT EDIT THIS SECTION (delimited by --start-line--/--end-line--) # Any modification may be deleted or altered by authconfig in future workgroup = EXAMPLE password server = dc01. GE ; security = ads winbind enum groups = Yes winbind enum users = Yes idmap config * : range = 10000 - 20000 idmap config * : backend = tdb idmap config example : backend = tdb idmap config example : range = 20000 - 20000000 map untrusted to domain = Yes client ntlmv2 auth = Yes client lanman auth = No winbind normalize names = No ; winbind separator = / ; winbind use default domain = yes winbind nested groups = Yes winbind nss info = rfc2307 winbind reconnect delay = 30 ; winbind offline logon = true winbind cache time = 1800 winbind refresh tickets = true allow trusted domains = Yes server signing = auto client signing = auto lm announce = No ntlm auth = no lanman auth = No preferred master = No wins support = No encrypt passwords = yes ; password server = 10.0.11.50 printing = bsd load printers = no socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 The default permissions for /var/cache/samba/winbindd_privileged in RHEL/Cent OS 5.4 were 750 root:squid (which worked by default) but are now 750 root:wbpriv in 5.5 which doesn't allow the user Squid runs under to access the socket. LOCAL -- create_fake_krb5_conf: Created a fake krb5file: /tmp/.mskt-16875krb5-- get_krb5_context: Creating Kerberos Context -- try_machine_keytab: Using the local credential cache: /tmp/.mskt-16875krb5_ccache -- try_machine_keytab: krb5_get_init_creds_keytab failed (Key table entry not found) -- try_machine_keytab: Unable to authenticate using the local keytab -- try_ldap_connect: Connecting to LDAP server: dc01.example.local -- try_ldap_connect: Connecting to LDAP server: dc01.example.local SASL/GSSAPI authentication started Error: ldap_set_option failed (Local error) Error: ldap_connect failed -- krb5_cleanup: Destroying Kerberos Context -- ldap_cleanup: Disconnecting from LDAP server -- init_password: Wiping the computer password structure ####### /etc/squid/Configuration File ####### ####### cache manager cache_mgr [email protected] visible_hostname squid.example.local http_port 8080 ####### kerberos authentication auth_param negotiate program /usr/lib64/squid/squid_kerb_auth -d -s HTTP//usr/lib64/squid/.example.local auth_param negotiate children 10 auth_param negotiate keep_alive on ####### provide access via ldap for clients not authenticated via kerberos auth_param basic program /usr/lib64/squid/squid_ldap_auth -R \ -b "dc=example,dc=local" \ -D [email protected] \ -w "password" \ -f s AMAccount Name=%s \ -h dc01.example.local auth_param basic children 10 auth_param basic realm Internet Proxy auth_param basic credentialsttl 1 minute ##################################################################################################################### ####### ldap authorizations ######## ##################################################################################################################### # restricted proxy access logged external_acl_type internet_users %LOGIN /usr/lib64/squid/squid_ldap_group -R -K \ -b "dc=example,dc=local" \ -D [email protected] \ -w "password" \ -f "(&(objectclass=person)(s AMAccount Name=%v)(memberof=cn=Internet Users,ou=mygroups,dc=example,dc=local))" \ -h dc01.example.local # full proxy VIP Users external_acl_type vip_access %LOGIN /usr/lib64/squid/squid_ldap_group -R -K \ -b "dc=example,dc=local" \ -D [email protected] \ -w "password" \ -f "(&(objectclass=person)(s AMAccount Name=%v)(memberof=cn=VIPUSERS,ou=mygroups,dc=example,dc=local))" \ -h dc01.example.local # full proxy access logged external_acl_type internet_users_full_log %LOGIN /usr/lib64/squid/squid_ldap_group -R -K \ -b "dc=example,dc=local" \ -D [email protected] \ -w "password" \ -f "(&(objectclass=person)(s AMAccount Name=%v)(memberof=cn=Internet Users Full Log,ou=mygroups,dc=example,dc=local))" \ -h dc01.example.local ##################################################################################################################### ####### acl for proxy auth and ldap authorizations acl auth proxy_auth REQUIRED # format "acl, aclname, acltype, acltypename, activedirectorygroup" acl Restricted Access Log external internet_users Internet\ Users acl VIPS external vip_access VIPUSERS acl Full Access Log external internet_users_full_log Internet\ Users\ Full\ Log #Myaccesslists acl allowedlists url_regex -i "/squid/allowedlists.txt" acl blacklists url_regex -i "/squid/blacklists.txt" ####### squid defaults acl manager proto cache_object acl gehost src 127.0.0.1/32 ::1 acl to_gehost dst 127.0.0.0/8 0.0.0.0/32 ::1 acl SSL_ports port 443 acl Safe_ports port 80 # http -- INSERT -- acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT http_access allow manager gehost http_access deny manager http_access deny ! SSL_ports http_access allow gehost ####### enforce auth: order of rules is important for authorization levels no_cache deny allowedlists http_access deny ! wbinfo -u & wbinfo -g shows all users and groups in AD.

Related Information Overview Working with Authentication Protocols Managing Credentials Setting Authentication Policy Options Auditing and Troubleshooting Logon and Authentication Additional Resources Authentication takes place all around us.

For example, you are required to authenticate your identity and purpose when crossing international borders or completing business transactions.

Hi, I'm trying to configure Kerberos Authentication for squid. I have followed the kerberos authentication guide on squid-cache and many other guides, I always end up with these logs in my

My client browser keeps prompting for username/password. 2011/04/30 | squid_kerb_auth: WARNING: received type 1 NTLM token 2011/04/30 | authenticate Negotiate Handle Reply: Error validating user via Negotiate.

Authentication validates user identity and defines resources that a user can access.

Windows operating systems use NTLM or the Kerberos V5 authentication protocol.

Error returned 'BH received type 1 NTLM token' 2011/04/30 | squid_kerb_auth: DEBUG: Got 'YR Tl RMTVNTUAABAAAAl4II4g AAAAAAAAAAAAAAAAAAAAAGAb Ad AAAADw==' from squid (length: 59).

2011/04/30 | squid_kerb_auth: DEBUG: Decode 'Tl RMTVNTUAABAAAAl4II4g AAAAAAAAAAAAAAAAAAAAAGAb Ad AAAADw==' (decoded length: 40).

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