[ts-7000] password problem

["kenlu6" <>]

Hi, I am using TS-7400 with TS-Linux 2.4. The default root user has no 
password, and we can login through telnet and FTP have no problem.  But when I 
change the password to something by passwd command, then change back to none 
password. Telnet is working, but FTP can not connect any more.  Then I found 
the passwd file in /etc/passwd is larger then before.  So I have to copy back 
original passwd file from other board, it works again.  My question, why FTP's 
password is different?  How to use correct way to change password to none,so 
FTP still works?



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