SFTP umask

Do this pico /opt/sftp-server.sh

#!/bin/bash  
# This is a wrapper around the sftp-server subsystem to set umask. Point  
# the subsystem in /etc/ssh/sshd_config to this file. (Ubuntu/Debian  
# file locations assumed)  
  
umask 0002  
exec /usr/lib/openssh/sftp-server

Remember to chmod ugo+x /opt/sftp-server.sh

Then pico /etc/ssh/sshd_config

Replace/edit this part:

# Subsystem sftp /usr/lib/openssh/sftp-server # replaced with below  
Subsystem sftp /opt/sftp-server.sh  

Finally remember: /etc/init.d/ssh restart