The problem's been solved! At least for ftp. We were thinking that
netfilter didn't have a similar module but after routing around the "junk"
from the only 2.3 installation i made i found the module. So ftp works now
but icq 2000 for windows is still not working. Could this be just a
problem with beta software or it is something 2.4 will have to fix?
On Sun, 21 May 2000, James Sutherland wrote:
> On Sun, 21 May 2000, Sebastian Ip wrote:
>
> > Hello.
> >
> > This is a problem with one of my friend's machines. He uses a ATM ADSL,
> > but the problem is the same for a modem dialup,
> > solution and he is using a Redhat 6.2 box to share access with his family.
> > ( would be nice if you guys can help cause he's about to change back to
> > windows98 and winroute ;P)
>
> Not a good idea :)
>
> > Anyhow the problem is that when he tries to ftp from behind his "firewall"
> > he gets "invalide ports" error or something. Looking at the logs on our
> > school server I noticed this: "refused PORT 192.168.8.1,3800 from
> > dial-up1.nhh.com.hk [202.64.58.156]". Clearly there is some problem where
> > we are getting his internal address instead of the Masquraded address.
> > What has really stumped us is that the problem exists in both 2.3 + ADSL
> > or modem and 2.2 + ADSL and modem. Using similar ipchains rules in 2.2 as
> > I do he still has this problem. If it also helps people answering this
> > question using icq 2000 he gets a "rate exceeded" error while icq 98 works
> > fine.
>
> He needs to use "passive" FTP. With "normal" FTP, you connect to the
> server and send commands; the server then connects back to your IP address
> to send the data. This, of course, doesn't work with NAT unless you use a
> special extra support module.
>
> Either he can just enable "passive mode" in his FTP client, or load the
> FTP NAT module, which can be enabled via the kernel config screen, or
> there may be a copy in /lib/modules/(kernel version)/net/.
>
> > Thanks guys in advance if you can help. Also he's going to need some help
> > port forwarding on 2.3 kernel. As i never used a 2.3 kernel could someone
> > here drop him a line about what util to use and such? Thanks he's email is
> > tparker@sc.esf.edu.hk .
>
> Erm - why is he going to be using an experimental, development kernel??
> If, as he appears, he is new to this system, he probably shouldn't...
>
>
> James.
>
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