ftp: why passive mode?

Fri, 11 Jan 2002 10:32:00 -0200

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Hy all,

I found my ftp clients behind my linux firewall(making SNAT) just can =
make successfull ftp transfers if they're using ftp clients in passive =
mode.
Someone could tell me what is the reason of this?
Wouldn't  the ip_conntrack_ftp module work to get the normal ftp =
connections functional?

Thank you.
-------------------------------------------------
 -- Bruno Negr=E3o -- Suporte
 -- Plugway Acesso Internet Ltda.
 -- (31)34812311
 -- bnegrao@plugway.com.br

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<DIV><FONT face=3DArial size=3D2>Hy all,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I found my ftp clients behind my linux=20
firewall(making SNAT) just can make successfull ftp transfers if they're =
using=20
ftp clients in passive mode.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Someone could tell me what is the =
reason of=20
this?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Wouldn't&nbsp;&nbsp;the =
ip_conntrack_ftp module=20
work to&nbsp;get the normal ftp connections functional?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thank you.</FONT></DIV>
<DIV><FONT face=3DArial=20
size=3D2>-------------------------------------------------<BR>&nbsp;-- =
Bruno=20
Negr=E3o -- Suporte<BR>&nbsp;-- Plugway Acesso Internet =
Ltda.<BR>&nbsp;--=20
(31)34812311<BR>&nbsp;-- <A=20
href=3D"mailto:bnegrao@plugway.com.br">bnegrao@plugway.com.br</A></FONT><=
/DIV></BODY></HTML>

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