As There is no actual recursive command built into the File Transfer Protocol, this would be something purely dependent on your FTP Client, if it supports this feature or not. You will need to read into each of the FTP client applications you are interested in using, and look to see if they can locally initiate a recursive chmod, by browsing into each directory and sub directory you specify, and change the permissions as you designate. Unfortunately it will not offer the same flexibility or full control as shell access would. If possible, get remote shell access, if you feel comfortable with it, and utilize that to issue the commands in this guide.