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实在烦透了,telnet和ftp怎么都用不成

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发表于 2005-5-22 11:53:04 | 显示全部楼层 |阅读模式
最近安装了SuSE 9.3,本想好好学习一下的,随知同在一个局域网内,用其它windows机器用telnet和ftp访问它,怎么都不成,现在相互ping都是通的,就是telnet不上去,反过了用装SuSE的主机telnet别的机器是可以的,真是太烦了!看查了无数资料和贴子,还是搞不定,请哪位高人指点迷津。

请不要告诉我xinetd.d中telnet的disable = no这种答案,另外用chkconfig --list查出来telnet是on,vsftpd也是on,到是有个兄弟提到过什么防火墙设置,也没讲明白,我试了半天也还是一个样。唉!
发表于 2005-5-22 14:03:09 | 显示全部楼层
你开了telnet,ftp服务吗?

还有你确定你已经装了telnet 和ftp服务?
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 楼主| 发表于 2005-5-22 15:54:46 | 显示全部楼层
怎么看开没开这个服务?我是用chkconfig --list检查telnet和vsftpd都是on,算不算服务已启动?是否安装了telnet和ftp?当然安装了,没安装的话,xinded守护进程就拉不起来它俩了,而且在本机上完全可以telnet和ftp自己,问题是从其机器上则不能,请高手再仔细分析。
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 楼主| 发表于 2005-5-22 16:40:42 | 显示全部楼层
从我搜索过的无数贴子分析,我怀疑是防火墙设置有问题,但绝大多数人都是拿着redhat来讲,而我这个装的是SuSE,很多命令和文件路径都不同,不知有谁熟悉SuSE的给点建议,而且我一直都只装命令行,没装桌面,只要告诉我命令是什么,哪几个参数是重要的就行了,谢过!
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发表于 2005-5-22 17:32:13 | 显示全部楼层
那ssh可以吗?

ssh比telnet更安全

那你试试关掉防火墙
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发表于 2005-5-22 20:34:50 | 显示全部楼层
首先要确定你的系统只用netfiter/iptables这一种防火墙,并且系统没有打开数据包的转发功能。
1.查看一下21和23 端口是否开:netstat  -nat
2.显示防火墙的过滤规测:iptables -L 。 filter的表的默认策略一般是DROP,应该用nmap先本地扫描:nmap 127.0.0.1 , 看看哪些端口是被fitered的,是否包括21,23端口。
3.拆掉防火墙:iptables -F
4.再用nmap 扫描一下,包括本地的扫面和从外部的扫描。例如:nmap -P0 127.0.0.1 -sS
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发表于 2005-6-16 20:49:00 | 显示全部楼层
服务器系统suse 9,telnet和vsftpd都是on,端口21、23开放。
目前情况:telnet登陆正常,ftp只允许匿名登陆,请高手指点一二。
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发表于 2005-6-20 19:46:07 | 显示全部楼层
我的vsftpd.conf文件配置,只允许匿名访问

# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are very paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
#
# Allow anonymous FTP?
anonymous_enable=YES
#
# Uncomment this to allow local users to log in.
local_enable=NO
#
# Uncomment this to enable any form of FTP write command.
write_enable=NO
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=NO
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=NO
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format
xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that turning on ascii_download_enable enables malicious remote parties
# to consume your I/O resources, by issuing the command "SIZE /big/file" in
# ASCII mode.
# These ASCII options are split into upload and download because you may wish
# to enable ASCII uploads (to prevent uploaded scripts etc. from breaking),
# without the DoS risk of SIZE and ASCII downloads. ASCII mangling should be
# on the client anyway..
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
#chroot_list_enable=YES
# (default follows)
#chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES

pam_service_name=vsftpd
userlist_enable=YES
#enable for standalone mode
listen=YES
tcp_wrappers=YES
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发表于 2005-6-21 06:54:52 | 显示全部楼层
请不要告诉我xinetd.d中telnet的disable = no这种答案,另外用chkconfig --list查出来telnet是on,vsftpd也是on,到是有个兄弟提到过什么防火墙设置,也没讲明白,我试了半天也还是一个样。唉!

telnet的看看xinetd服务开了没有, 改完.conf之后要重启xinetd的, vsftpd应该是没配好, 贴出你的vsftpd.conf和链接上的出错信息看看
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