An interesting FTP error in Solaris 10 -- root cannot access FTP

An interesting FTP error in Solaris 10 -- root cannot access FTP

System Environment:

Operating System: Solaris 10

Error:

[[Email protected]:/] # ftp 127.0.0.1

Connected to 127.0.0.1.

220 solaris187 FTP server ready.

Name (127.0.0.1: Root): Root

331 Password required for root.

Password:

530 login incorrect.

Login Failed.

Root users cannot access FTP. Other users can!

Case Analysis:

By default, Solaris is secure. The root user is forbidden to access FTP, which is restricted by the/etc/ftpusers file.

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If the root user is removed from this file, the root user can access FTP, but this case still cannot be accessed!

Case Analysis:

1. If it is a configuration file restriction, it should be because the root user has no chance to enter the password and is directly rejected.

2. You can enter a password, indicating that the authentication identity is incorrect. It may be a password or a problem with the/etc/passwd file.

To solve the password problem, check the/etc/passwd file:

[[Email protected]:/] # Cat/etc/passwd

Root: X: 0: 0: super-user :/:Usr/bin/bash

Daemon: X: 1: 1 ::/:

Bin: X: 2: 2:/usr/bin:

SYS: X: 3: 3 ::/:

ADM: X: 4: 4: Admin:/var/adm:

LP: X: 71: 8: Line Printer admin:/usr/spool/LP:

Uucp: X: 5: 5: uucp admin:/usr/lib/uuucp:

Nuucp: X: 9: 9: uucp admin:/var/spool/uuucppublic:/usr/lib/uucp/uucico

Smmsp: X: 25: 25: Sendmail Message submission program :/:

Listen: X: 37: 4: Network admin:/usr/NET/NLS:

TPD: X: 50: 50: TPD Reserved UID :/:

Webservd: X: 80: 80: webserver Reserved UID :/:

Postgres: X: 90: 90: PostgreSQL Reserved UID:/usr/bin/pfksh

Svctag: X: 95: 12: Service tag uid :/:

Nobody: X: 60001: 60001: NFS anonymous access user :/:

Noaccess: X: 60002: 60002: no access user :/:

Nobody4: X: 65534: 65534: SunOS 4.x NFS anonymous access user :/:

Tom: X: 500: 500:/export/home/Tom:/bin/bash

Bob: X: 501: 500:/export/home/Bob:/bin/bash

It turns out that in the root user's entry, the shell part is missing a slash (/) before USR, so shell cannot be enabled!

Changed:

Root: X: 0: 0: super-user :/:/Usr/bin/bash

@ Now, the problem is solved!

This article is from the blog of "Tian Ke's blog", please be sure to keep this source http://tiany.blog.51cto.com/513694/1439803