Dear community, I am setting up a squid proxy but I am not able to allow access to ftp server. I read many explanation on this but I'm a bit lost. So here is my conf : acl SSL_ports port 443 20 21 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl CONNECT method CONNECT ####### IPOC ACL's acl sub1 src 10.1.1.0/24 acl sub2 src 10.1.2.128/25 acl ftp proto FTP http_access allow ftp ###### Default access based on defined access lists http_access allow manager localhost http_access deny manager # Deny requests to certain unsafe ports http_access deny !Safe_ports # Deny CONNECT to other than secure SSL ports http_access deny CONNECT !SSL_ports http_access allow sub1 http_access allow sub2 # Deny all http_access deny all ###### Squid's port http_port 3128 ###### Default Squid hierarchy_stoplist cgi-bin ? 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 I can see the following log in the access.log : [02/May/2012:11:44:55 +0200] "GET ftp://ftp.free.fr/ HTTP/1.0" 504 3190 "-" "Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20100101 Firefox/12.0" TCP_MISS:DIRECT But I get a squid error message on firefox : The requested URL could not be retrieved What am I missing here ? Regards, Hugo