Is it possible to stop people from uploading files using squid ie is there some way to do an outbound mime type acl ? I have added these two lines to my squid.conf : acl fileupload req_mime_type -i ^multipart/form-data$ http_access deny fileupload Here is my complete conf : #=================================== cache_mem 32 MB cache_mgr admin@gateway cache_dir ufs /var/spool/squid 2000 16 256 cache_access_log /var/log/squid/access.log cache_log /var/log/squid/cache.log cache_store_log /var/log/squid/store.log visible_hostname gateway cache_effective_user squid cache_effective_group squid http_port 3128 transparent hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY 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 refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 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 to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 563 acl CONNECT method CONNECT acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 563 # https, snews 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 # ==== MIME Filter for File Upload ====== acl fileupload req_mime_type -i ^multipart/form-data$ http_access deny to_localhost http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localhost # ======= Block File Upload ======== http_access deny fileupload all http_reply_access deny fileupload all coredump_dir /var/spool/squid #=================================== But it not works ! Has anyone used this acl before and has a sample from the conf file ?