Yes it is good indeed. Details are below. * I have squid on Linux as a forward proxy with 2 NICs 1 connected with local LAN and 2nd with Internet * I configured squid as a forward proxy, not transparent proxy (users manually enter proxy address in there browser to access internet) * I have a requirement to allow access to remote FTP through File Zilla client by using squid proxy. * Now when my client user connect through file zilla by using squid proxy, he is getting error while listing directory, however when user trying to connect same FTP by using ISA firewall client, he is able to access. * I am getting below logs from access.log when Filezilla show error "Failed to retrieve directory listing" [root@squidkhi1 ~]# tail -f /var/logs/access.log | grep 10.1.40.11 1395158045.715 39655 10.1.40.11 TCP_MISS/000 0 CONNECT 115.186.92.227:65273 - NONE/- - [Host: 115.186.92.227:65273\r\nUser-Agent: FileZilla\r\n] []If any thing confusing you, please let me know.Sarfraz Aslam ----- Original Message ----- From: Eliezer Croitoru <eliezer@xxxxxxxxxxxx> To: squid-users@xxxxxxxxxxxxxxx Cc: Sent: Tuesday, March 18, 2014 7:35 PM Subject: Re: FTP not connected through Squid lets start from 0 once again. You have filezilla as a client and some remote ftp server. You configure in squid to allow access from the client IP address. You point the client towards squid from a browser and try to browse some web site and only then try to use filezilla client. What is the resulst and steps for each and one of the steps? Take your time with it, it will help to understand the issue. Eliezer On 18/03/2014 11:17, ***some text missing*** wrote: > > > Just need to confirm is IP TABLES also causing such type of problem ? > > > Sarfraz