Hi all, I've been banging my head against an auth issue with Squid3 for some time now, I'm hoping someone here will be able to shine a light on it. I have installed squid 3 (3.1.20) on Debian 7 (using the Debian package) I've configured it according to the wiki doc: http://wiki.squid-cache.org/ConfigExamples/Authenticate/WindowsActiveDirectory For the most part, this configuration works great. Browsing through a browser and most applications works fine using SSO. However, some applications fail to authenticate correctly. Notably, windows update and Microsoft Lync. These attempt to auth using the logged in user account, fail, then pop up an authentication dialog. Putting correct credentials into the dialog doesn't work either. Every test I've run suggests that each of the components are working correctly. Kerberos is configured correctly, squid_kerb_auth works, ntlm_auth works as does wbinfo. TCPDumps of sessions that work (through a browser, IE, Chrome, FF all work) and ones that don't (Windows update) appear pretty much the same. In both cases the server provides a challenge and the client responds (dumps available if you want them) Here's what I see in cache.log for a successful auth: 2013/10/10 14:02:11| negotiate_wrapper: Got 'YR TlRMTVNTUAABAAAAl4II4gAAAAAAAAAAAAAAAAAAAAAGAbEdAAAADw==' from squid (length: 59). 2013/10/10 14:02:11| negotiate_wrapper: Decode 'TlRMTVNTUAABAAAAl4II4gAAAAAAAAAAAAAAAAAAAAAGAbEdAAAADw==' (decoded length: 40). 2013/10/10 14:02:11| negotiate_wrapper: received type 1 NTLM token 2013/10/10 14:02:11| negotiate_wrapper: Return 'TT TlRMTVNTUAACAAAADgAOADgAAAAVgoniTIZLWbbwZ5wAAAAAAAAAAHAAcABGAAAABgEAAAAAAA9QAEEAQwBJAEYASQBDAAIADgBQAEEAQwBJAEYASQBDAAEADABCAEEAQwBPAE8ATgAEABoAcABhAGMAaQBmAGkAYwAuAGwAbwBjAGEAbAADACgAYgBhAGMAbwBvAG4ALgBwAGEAYwBpAGYAaQBjAC4AbABvAGMAYQBsAAAAAAA= ' 2013/10/10 14:02:11| negotiate_wrapper: Got 'KK TlRMTVNTUAADAAAAGAAYAIgAAAAYABgAoAAAAA4ADgBYAAAADAAMAGYAAAAWABYAcgAAABAAEAC4AAAAFYKI4gYBsR0AAAAPLtwz2n5LAwh+0a8fdq1dRVAAQQBDAEkARgBJAEMAbgBiAG8AdwBrAGUASABTAE4AWgAtAE4AQgBPAFcASwBFAHv2o2FAquhEAAAAAAAAAAAAAAAAAAAAAMG+Tip01j5dx+x1+2hdSAjkN+OskudoRIttHfifAVCtWaNrbmpBARM=' from squid (length: 271). 2013/10/10 14:02:11| negotiate_wrapper: Decode 'TlRMTVNTUAADAAAAGAAYAIgAAAAYABgAoAAAAA4ADgBYAAAADAAMAGYAAAAWABYAcgAAABAAEAC4AAAAFYKI4gYBsR0AAAAPLtwz2n5LAwh+0a8fdq1dRVAAQQBDAEkARgBJAEMAbgBiAG8AdwBrAGUASABTAE4AWgAtAE4AQgBPAFcASwBFAHv2o2FAquhEAAAAAAAAAAAAAAAAAAAAAMG+Tip01j5dx+x1+2hdSAjkN+OskudoRIttHfifAVCtWaNrbmpBARM=' (decoded length: 200). 2013/10/10 14:02:11| negotiate_wrapper: received type 3 NTLM token 2013/10/10 14:02:11| negotiate_wrapper: Return 'AF = nbowke' And here's what I see for a failed auth: 2013/10/10 14:02:11| negotiate_wrapper: Got 'YR TlRMTVNTUAABAAAAl4II4gAAAAAAAAAAAAAAAAAAAAAGAbEdAAAADw==' from squid (length: 59). 2013/10/10 14:02:11| negotiate_wrapper: Decode 'TlRMTVNTUAABAAAAl4II4gAAAAAAAAAAAAAAAAAAAAAGAbEdAAAADw==' (decoded length: 40). 2013/10/10 14:02:11| negotiate_wrapper: received type 1 NTLM token 2013/10/10 14:02:11| negotiate_wrapper: Return 'TT TlRMTVNTUAACAAAADgAOADgAAAAVgoniHY15O8+h+dcAAAAAAAAAAHAAcABGAAAABgEAAAAAAA9QAEEAQwBJAEYASQBDAAIADgBQAEEAQwBJAEYASQBDAAEADABCAEEAQwBPAE8ATgAEABoAcABhAGMAaQBmAGkAYwAuAGwAbwBjAGEAbAADACgAYgBhAGMAbwBvAG4ALgBwAGEAYwBpAGYAaQBjAC4AbABvAGMAYQBsAAAAAAA= ' 2013/10/10 14:02:11| negotiate_wrapper: Got 'YR TlRMTVNTUAADAAAAGAAYAIIAAAAYABgAmgAAAA4ADgBYAAAADAAMAGYAAAAQABAAcgAAABAAEACyAAAAFYKI4gYBsR0AAAAPfygaAzoaCa6+fpmNu2/r21AAQQBDAEkARgBJAEMAZABqAG8AaABuAHMASABBAE0AVgBFAFQAMAAyAOAyYXzujroFAAAAAAAAAAAAAAAAAAAAAFQceVB4lD50mtMNAiSke4gMxp1YqbAVMGv56F/9kmCz3UFpS+lKfgo=' from squid (length: 263). 2013/10/10 14:02:11| negotiate_wrapper: Decode 'TlRMTVNTUAADAAAAGAAYAIIAAAAYABgAmgAAAA4ADgBYAAAADAAMAGYAAAAQABAAcgAAABAAEACyAAAAFYKI4gYBsR0AAAAPfygaAzoaCa6+fpmNu2/r21AAQQBDAEkARgBJAEMAZABqAG8AaABuAHMASABBAE0AVgBFAFQAMAAyAOAyYXzujroFAAAAAAAAAAAAAAAAAAAAAFQceVB4lD50mtMNAiSke4gMxp1YqbAVMGv56F/9kmCz3UFpS+lKfgo=' (decoded length: 194). 2013/10/10 14:02:11| negotiate_wrapper: received type 3 NTLM token 2013/10/10 14:02:11| negotiate_wrapper: Return 'NA = NT_STATUS_INVALID_PARAMETER' The only difference I see there is that negotiate_wrapper gives the prefix "KK" for the successful response, but "YR" for the failed one. Is it possible negotiate_wrapper is incorrectly classifying the response? I've Googled the crap out of this and haven't found anything useful. Any suggestions of things I can test, please let me know, I've completely run out of ideas. Thanks. squid.conf: ------------------------------ ---------------- visible_hostname bacoon.pacific.local err_html_text http://serviceplus/CAisd/pdmweb.exe ### negotiate kerberos and ntlm authentication auth_param negotiate program /usr/local/bin/negotiate_wrapper -d --ntlm /usr/bin/ntlm_auth --diagnostics --helper-protocol=squid-2.5-ntlmssp --domain=PACIFIC --kerberos /usr/lib/squid3/squid_kerb_auth -d -s GSS_C_NO_NAME auth_param negotiate children 256 auth_param negotiate keep_alive off ### pure ntlm authentication auth_param ntlm program /usr/bin/ntlm_auth --diagnostics --helper-protocol=squid-2.5-ntlmssp --domain=PACIFIC auth_param ntlm children 256 auth_param ntlm keep_alive off ### provide basic authentication via ldap for clients not authenticated via kerberos/ntlm auth_param basic program /usr/lib/squid3/squid_ldap_auth -R -b "dc=pacific,dc=local" -D bacoon-squid@pacific.local -W /etc/squid3/ldappass.txt -f sAMAccountName=%s -h hector.pacific.local auth_param basic children 256 auth_param basic realm Internet Proxy auth_param basic credentialsttl 5 minute ### ldap authorisation external_acl_type memberof %LOGIN /usr/lib/squid3/squid_ldap_group -R -K -b "dc=pacific,dc=local" -D bacoon-squid@pacific.local -W /etc/squid3/ldappass.txt -f "(&(objectclass=person)(sAMAccountName=%v)(memberof=cn=%g,ou=Security,ou=Groups,dc=pacific,dc=local))" -h hector.pacific.local external_acl_type member2 %LOGIN /usr/lib/squid3/squid_ldap_group -R -K -b "dc=pacific,dc=local" -D bacoon-squid@pacific.local -W /etc/squid3/ldappass.txt -f "(&(objectclass=person)(sAMAccountName=%v)(memberof=cn=%g,ou=Security,ou=Groups,dc=pacific,dc=local))" -h hector.pacific.local ### Use Goblin as upstream cache, don't cache locally cache_peer goblin.pacific.local parent 3128 3130 default cache deny all ### acl for proxy auth and ldap authorizations acl auth proxy_auth REQUIRED # aclname acltype typename activedirectorygroup acl RestrictedAccess external memberof "/etc/squid3/access_restricted" acl StandardAccess external memberof "/etc/squid3/access_standard" acl FullAccess external memberof "/etc/squid3/access_full" acl DomAdmins external member2 "/etc/squid3/access_admins" acl whitelist_noauth_dom dstdomain "/etc/squid3/whitelist_noauth_domains" acl whitelist_noauth_url url_regex -i "/etc/squid3/whitelist_noauth_urls" acl whitelist_standard_dom dstdomain "/etc/squid3/whitelist_standard_domains" acl whitelist_standard_url url_regex -i "/etc/squid3/whitelist_standard_urls" acl whitelist_restricted_dom dstdomain "/etc/squid3/whitelist_restricted_domains" acl whitelist_restricted_url url_regex -i "/etc/squid3/whitelist_restricted_urls" acl whitelist_full_dom dstdomain "/etc/squid3/whitelist_full_domains" acl whitelist_full_url url_regex -i "/etc/squid3/whitelist_full_urls" acl StreamingRequest req_mime_type -i "/etc/squid3/acl_streaming_mimetypes" acl StreamingReply rep_mime_type -i "/etc/squid3/acl_streaming_mimetypes" ### squid defaults acl manager proto cache_object acl localhost src 127.0.0.1/32 ::1 acl localstuff-nets dst 172.31.0.0/16 acl localstuff-domains dstdomain .pacific.local acl localstuff-domains dstdomain .hsp.local acl management src 172.16.0.0/12 acl management src 127.0.0.1/32 ::1 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 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 localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localhost ### http_access rules # enforce authentication, order of rules is important for authorization levels http_access allow whitelist_noauth_dom http_access allow whitelist_noauth_url # Emergency allow all when things get broken: #http_access allow all http_access deny !auth http_access allow FullAccess http_access allow DomAdmins http_access deny StreamingRequest all http_access allow RestrictedAccess whitelist_restricted_dom http_access allow RestrictedAccess whitelist_restricted_url # Standard users can see everything restricted users can see, + more http_access allow StandardAccess whitelist_restricted_dom http_access allow StandardAccess whitelist_restricted_url http_access allow StandardAccess whitelist_standard_dom http_access allow StandardAccess whitelist_standard_url # DO NOT REMOVE THE FOLLOWING LINE http_access deny all http_reply_access deny RestrictedAccess StreamingReply all http_reply_access deny StandardAccess StreamingReply all ### Always use goblin, except for local stuff never_direct deny localstuff-nets never_direct deny localstuff-domains never_direct allow all ### SNMP acl snmp_public snmp_community public snmp_port 3401 snmp_access allow snmp_public management snmp_access deny all ### logging # don't log allowedsites, prioritysites, AnonymousAccess #access_log /var/log/squid3/access.log squid !allowedsites !prioritysites !AnonymousAccess ### SquidGuard url_rewrite_program /usr/bin/squidGuard url_rewrite_children 50 url_rewrite_access deny localstuff-nets url_rewrite_access deny localstuff-domains url_rewrite_access deny whitelist_restricted_dom url_rewrite_access deny whitelist_restricted_url url_rewrite_access deny whitelist_standard_dom url_rewrite_access deny whitelist_standard_url url_rewrite_access deny whitelist_full_dom url_rewrite_access deny whitelist_full_url url_rewrite_access deny DomAdmins url_rewrite_access allow FullAccess # If you're wondering why only FullAccess is allowed above, noone except FullAccess should even gete to SquidGuard. The default is allow anyway. ### Antivirus icap_enable on icap_send_client_ip on icap_send_client_username on #icap_client_username_encode off icap_client_username_header X-Authenticated-User #icap_preview_enable on #icap_preview_size 1024 icap_service service_req reqmod_precache bypass=1 icap://localhost:1344/squidclamav adaptation_access service_req allow all icap_service service_resp respmod_precache bypass=1 icap://localhost:1344/squidclamav adaptation_access service_resp allow all ### squid Debian defaults http_port 3128 icp_port 3130 hierarchy_stoplist cgi-bin ? coredump_dir /var/spool/squid3 refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . 0 20% 4320 Thanks Luke Pascoe E luke@xxxxxxxxxx P +64 (9) 296 2961 M +64 (27) 426 6649 W www.osnz.co.nz 24 Wellington St Papakura Auckland, 2110 New Zealand
