Hello, I'm running Squid-2.t.stable7 on a windows 2003 server. It works perfectly, but now i won't users to authenticate. This is mij squid.conf ------------------------------------------------------------------------------------ http_port 6588 icp_port 0 cache_peer wwwproxy.xs4all.nl parent 8080 3130 no-query default connect_timeout 120 seconds hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY cache_mem 50 MB cache_swap_low 90 cache_swap_high 95 ipcache_size 1024 ipcache_low 90 ipcache_high 95 cache_dir ufs d:/squid/cache 500 16 256 cache_access_log d:/squid/log/access.log cache_log d:/squid/log/cache.log cache_store_log none mime_table d:/squid/etc/mime.conf pid_filename d:/squid/log/squid.pid debug_options ALL,1 33,2 log_fqdn off ftp_user anonymous@xxxxxxxxxxxx ftp_sanitycheck on diskd_program d:/squid/libexec/diskd.exe unlinkd_program d:/squid/libexec/unlinkd.exe authenticate_ip_ttl 60 seconds refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern . 0 20% 4320 read_timeout 15 minutes request_timeout 20 seconds client_lifetime 200 minutes half_closed_clients off ident_timeout 10 seconds shutdown_lifetime 30 seconds acl all src 0.0.0.0/0.0.0.0 acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl inside src 172.16.0.0/255.255.255.0 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 563 # https, snews 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 auth_param ntlm program d:/squid/libexec/win32_ntlm_auth.exe auth_param ntlm children 5 auth_param ntlm max_challenge_reuses 0 auth_param ntlm max_challenge_lifetime 2 minutes auth_param ntlm use_ntlm_negotiate on auth_param basic program d:/squid/libexec/nt_auth.exe auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off external_acl_type NT_global_group %LOGIN d:/squid/libexec/win32_check_group.exe -G -d external_acl_type NT_local_group %LOGIN d:/squid/libexec/win32_check_group.exe -G -d acl glo external NT_global_group Leerlingen acl loc external NT_local_group proxyinternet acl test proxy_auth REQUIRED http_access allow glo http_access allow loc http_access allow test http_access allow manager localhost http_access deny manager http_access allow inside http_access allow localhost http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access deny all http_reply_access allow all icp_access deny all miss_access allow all miss_access allow manager cache_effective_user nobody visible_hostname ams-guard dns_testnames www.annamaria.nl logfile_rotate 7 minimum_direct_hops 6 acl local-servers dstdomain .annamaria.nl acl local-servers dstdomain .ams.local always_direct allow local-servers acl local_ip src 172.16.0.1-172.16.0.40/255.255.255.0 always_direct allow local_ip acl biblion dstdomain .knipselkranten.nl acl biblion dstdomain 192.87.152.11 acl biblion dstdomain 192.87.152.80 always_direct allow biblion never_direct allow all icon_directory d:/squid/share/icons error_directory d:/squid/share/errors/English coredump_dir d:/squid/cache ie_refresh on ------------------------------------------------------------------------------ What i want? That squid can get the user names and passwords out of the AD from windows 2003 so that i can give the groups rights to access the internet or deny some urls. I don't know what i'm doing wrong.