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Re: redir y firewall



If you are using standard FTP, then your data connection will actually
be some random port above 1023, not port 20.

There is a way around this with passive ftp.

Bill Suetholz

On 03-Dec-99 Iñaki Martínez wrote:
> Kaixo Christian Hammers!!!
> 
>> >  In firewall i have ipchains with masquerade y redir with this:
>> >   redir --lport 12345 --cport 21 --caddr 10.0.2.2 [--ftp]
>> 
>> $ grep ftp /etc/services
>> ftp-data     20/tcp
>> ftp          21/tcp
>> 
>> ftp-data has to be forwarded, too.
> 
> then, i must have another redir command????
> 
>   redir --lport 12345 --cport 20 --caddr 10.0.2.2 [--ftp]
> 
>  like this??
> 
> 
>  I need that outside in internet do a ftp to a NT server inside of a
> intranet with a debian firewall between....
> 
> 
>  The NT server has a ftp server in port 21, so i must redirect any other
> port from outside the intranet to port 21 in NT server.....
> 
>  What must i do???? 
>  with the redir command is enough???? 
>  do i need two redir commands (ports 20 and 21)????
> 
>  Thanks.....
> 
> 
> 
> -- 
> 
>   Agur......
> 
>       The Basque Madness                      / /  (_)__  __ ____  __  
>        I.M.D. Computing                      / /__/ / _ \/ // /\ \/ / 
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> 
> 
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