I beginners Linux SFTP problems great god please help
Application environment
CentOS 192.168.10.2 (A), B (192.168.20.2) and C (192.168.30.2)
Create a regular user on B user and add wheel user groups, run nginx reverse proxy,
Directly through the SFTP file transfer from A to B, then B agent to C,

The problems at present,
Available on using the root user login to B and can successfully forward the file to C,
8093 [email protected] # # SFTP - P can be successful to forward the file to the C,
But if the users change into ordinary user here,
# SFTP -p 8093 [email protected]
At this point, will always appear Permisssion denied, both please try again.
From the literal meaning should be user group permissions, but don't know where to obtain change,
On the Internet to find a lot of similar files still yet to find a effective solution, since the CSDN great god, please help have a look,