Vsftpd远程登录不了哇！！！本地可以？？

我用的CentOS 6.0 下面是配置文件，大神帮忙看下！！(5ty(
[root@XiaoW]# cat -n /etc/vsftpd/vsftpd.conf
1 # Example config file /etc/vsftpd/vsftpd.conf
2 #
3 # The default compiled in settings are fairly paranoid. This sample file
4 # loosens things up a bit, to make the ftp daemon more usable.
5 # Please see vsftpd.conf.5 for all compiled in defaults.
6 #
7 # READ THIS: This example file is NOT an exhaustive list of vsftpd options.
8 # Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
9 # capabilities.
10 #
11 # Allow anonymous FTP? (Beware - allowed by default if you comment this out).
12 anonymous_enable=YES
13 #
14 # Uncomment this to allow local users to log in.
15 local_enable=YES
16 #
17 # Uncomment this to enable any form of FTP write command.
18 write_enable=YES
19 #
20 # Default umask for local users is 077. You may wish to change this to 022,
21 # if your users expect that (022 is used by most other ftpd's)
22 local_umask=022
23 #
24 # Uncomment this to allow the anonymous FTP user to upload files. This only
25 # has an effect if the above global write enable is activated. Also, you will
26 # obviously need to create a directory writable by the FTP user.
27 #anon_upload_enable=YES
28 #
29 # Uncomment this if you want the anonymous FTP user to be able to create
30 # new directories.
31 #anon_mkdir_write_enable=YES
32 #
33 # Activate directory messages - messages given to remote users when they
34 # go into a certain directory.
35 dirmessage_enable=YES
36 #
37 # Activate logging of uploads/downloads.
38 xferlog_enable=YES
39 #
40 # Make sure PORT transfer connections originate from port 20 (ftp-data).
41 connect_from_port_20=YES
42 #
43 # If you want, you can arrange for uploaded anonymous files to be owned by
44 # a different user. Note! Using "root" for uploaded files is not
45 # recommended!
46 #chown_uploads=YES
47 #chown_username=whoever
48 #
49 # You may override where the log file goes if you like. The default is shown
50 # below.
51 #xferlog_file=/var/log/vsftpd.log
52 #
53 # If you want, you can have your log file in standard ftpd xferlog format.
54 # Note that the default log file location is /var/log/xferlog in this case.
55 xferlog_std_format=YES
56 #
57 # You may change the default value for timing out an idle session.
58 #idle_session_timeout=600
59 #
60 # You may change the default value for timing out a data connection.
61 #data_connection_timeout=120
62 #
63 # It is recommended that you define on your system a unique user which the
64 # ftp server can use as a totally isolated and unprivileged user.
65 #nopriv_user=ftpsecure
66 #
67 # Enable this and the server will recognise asynchronous ABOR requests. Not
68 # recommended for security (the code is non-trivial). Not enabling it,
69 # however, may confuse older FTP clients.
70 #async_abor_enable=YES
71 #
72 # By default the server will pretend to allow ASCII mode but in fact ignore
73 # the request. Turn on the below options to have the server actually do ASCII
74 # mangling on files when in ASCII mode.
75 # Beware that on some FTP servers, ASCII support allows a denial of service
76 # attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
77 # predicted this attack and has always been safe, reporting the size of the
78 # raw file.
79 # ASCII mangling is a horrible feature of the protocol.
80 #ascii_upload_enable=YES
81 #ascii_download_enable=YES
82 #
83 # You may fully customise the login banner string:
84 #ftpd_banner=Welcome to blah FTP service.
85 #
86 # You may specify a file of disallowed anonymous e-mail addresses. Apparently
87 # useful for combatting certain DoS attacks.
88 #deny_email_enable=YES
89 # (default follows)
90 #banned_email_file=/etc/vsftpd/banned_emails
91 #
92 # You may specify an explicit list of local users to chroot() to their home
93 # directory. If chroot_local_user is YES, then this list becomes a list of
94 # users to NOT chroot().
95 #chroot_local_user=YES
96 #chroot_list_enable=YES
97 # (default follows)
98 #chroot_list_file=/etc/vsftpd/chroot_list
99 #
100 # You may activate the "-R" option to the builtin ls. This is disabled by
101 # default to avoid remote users being able to cause excessive I/O on large
102 # sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
103 # the presence of the "-R" option, so there is a strong case for enabling it.
104 #ls_recurse_enable=YES
105 #
106 # When "listen" directive is enabled, vsftpd runs in standalone mode and
107 # listens on IPv4 sockets. This directive cannot be used in conjunction
108 # with the listen_ipv6 directive.
109 listen=YES
110 #
111 # This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
112 # sockets, you must run two copies of vsftpd with two configuration files.
113 # Make sure, that one of the listen options is commented !!
114 #listen_ipv6=YES
115
116 pam_service_name=vsftpd
117 userlist_enable=YES
118 tcp_wrappers=YES