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<p><FONT class=normalfont><B><font color=blue>怎么样用iptables做地址映射</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者:作者<br>来自:Linux知识宝库<br>联系方式:无名<br><br>各位高手,我安装的是RedHat 7.2,新的iptables工具,我不知道怎么进行配置,才能让我的内部FTP服务器让Internet的用户访问?也就怎么进行IP地址映射的问题,请您指点……谢谢!!!!<br>
<br>
【发表回复】【查看CU论坛原帖】【关闭】<br>
 春花秋月 回复于:2002-02-04 17:25:58<br>
几句话,你搜搜看<br>
<br>
 chenl 回复于:2002-02-04 22:01:18<br>
我也是,不能局域网上ftp /telnet,后来实在没有办法,我把iptables 关掉了!<br>
<br>
 zhanzc 回复于:2002-02-05 08:55:18<br>
# ftp dnat<br>
#/sbin/iptables -t nat -A PREROUTING -p tcp -d $addr0 --dport 20 -i eth0 -j DNAT --to $addr3:20<br>
#/sbin/iptables -t nat -A PREROUTING -p tcp -d $addr0 --dport 21 -i eth0 -j DNAT --to $addr3:21<br>
这是我做过的一个例子。用过的好用。看看是不是对你有帮助吧。<br>
$addr0本机的外部网卡IP<br>
$addr1内部服务器的IP<br>
<br>
 xmms 回复于:2002-02-05 09:40:56<br>
[这个贴子最后由xmms在 2002/02/05 09:46am 编辑]<br>
<br>
这样写不是只有一台机器能FTP? <br>
try <br>
insertmod ip_nat_ftp<br>
等相关的模块. 我也没有指定某一台PC能不能FTP...可是我们的所有LAN都能FTP.<br>
<br>
或者你的iptable防火墙的script写的不对。没有开放ftp port.<br>
 <br>
<br>
 puputoto 回复于:2002-11-01 16:09:51<br>
如果我的是动态IP又怎样搞呢?<br>
<br>
我快疯了~~`看了都不知道多少篇文章和帖了~~~<br>
<br>
 arlenecc 回复于:2002-11-03 09:59:06<br>
你用我的防火墙脚本,对这个动态拨号的ip是支持的<br>
<br>
 aben456 回复于:2002-12-05 11:01:57<br>
请问,怎样IPTABLES映射可以让用户访问我外部IP的时候,自动转到内部的某一个IP上来?<br>
MAILTO:aben456@sina.com<br>
多谢赐教!<br>
<br>
 intelxt 回复于:2002-12-08 16:31:39<br>
也请赐教怎么样才能保留住<br>
所作的iptables的规则呢<br>
<br>
 intelxt 回复于:2002-12-08 17:14:47<br>
too easy<br>
insmod iptables<br>
iptables -t nat -A PREROUTING -p tcp -s xx.xx.xx.xx -dport 21 -j DNAT xx.xx.xx.xx:21 <br>
<br>
 chenfh 回复于:2003-01-13 17:58:16<br>
如果是使用ADSL,由于DSL MODEN 的限制,客户端需要设置为PASV mode.<br>
客户端如果是IE,需要把“使用被动FTP”打钩。<br>
我也被这个问题困扰很久。<br>
<br>
 laixi781211 回复于:2003-02-22 10:14:41<br>
[quote:9aabf17d69="arlenecc"]你用我的防火墙脚本,对这个动态拨号的ip是支持的[/quote:9aabf17d69]<br>
我收索了半天也没找到。老大能不能再发一遍?<br>
<br>
 JohnBull 回复于:2003-02-23 00:51:10<br>
[quote:29cd32d62e="chenfh"]如果是使用ADSL,由于DSL MODEN 的限制,客户端需要设置为PASV mode.<br>
客户端如果是IE,需要把“使用被动FTP”打钩。<br>
我也被这个问题困扰很久。[/quote:29cd32d62e]<br>
<br>
这不是MODEM的限制,也与DSL无关,是FTP协议的规定。在主动模式下数据通道是由服务器发起的,而服务器却认为客户的IP是网关的IP,所以……<br>
<br>
 mofaser 回复于:2003-03-13 14:31:12<br>
我想问问:怎么打开端口?
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