Topic: Port fwd

[benjamin Picuira]

yes i know all subjet talk about that .. but i have a question :

my e-smith gateway have an external adr  : 193.252.xxx.xxx and an internal ip 192.168.1.1

my ftp server (port 21) have an internal ip  : 192.168.1.11

i would like to redirect extrenal ftp to my internal ftp
193.252.xxx.xxx:21 to 192.168.1.11:21

i use "redir --lport=21 --cport=21 --caddr=192.168.1.11 --ftp=both"
the response of e-smith is :
server: bind: Address already in use

???? can someone help me ..??

benworld.
NB : Happy New Year

[hanscees]

I would think port 21 is in use by the ftp server. Yu would have to run that on anthewr port.

just curious how you redirect? with what program?

hc

[kmcclain]

4.1 beta 2 now includes IPmasqadm in the distribution for port forwarding support.
I would assume that is what he was using.

[benjamin Picuira]

I Know that but i can't do it with ipmasqadm ... i don't kown how it work ... i have try but it don't work .. ewxplain me how to do .. please

[hanscees]

yes, but what program do you use to do redir...... and so on?

hc

[benjamin Picuira]

yes with redir you can redirect an incoming connection on public adress to a private adress on port 21.

see the doc on redir.tar.gz

but can you help me to setup ipmasqadm ?

thanks a lot hc.

ben.

[Christopher Smith]

Try something like this:

ipmasqadm portfw -a -P tcp -L 193.252.xxx.xxx 21 -R 192.168.1.11 21
ipmasqadm portfw -a -P tcp -L 193.252.xxx.xxx 20 -R 192.168.1.11 20

Port 21 is used for FTP connections, and port 20 is the FTP DATA port. I believe that both have to be masqueraded.

There's a good HOWTO on it at LinuxDoc.org at

http://www.linuxdoc.org/HOWTO/IP-Masquerade-HOWTO-6.html#ss6.8