Hi all, I would really appreciate any comments on this "problem": We have a device (which is in full production) which is based on a Coldfire 5208, running 2.4.27-uc1. The system uses the uClinux-dist shipped ftpd to setup a ftp server. Work fine. Now, one customer uses a GPRS router, and a small switch to place two of these devices behind the single GPRS-router. He has configured the NAT in the GPRS-router to direct traffic to each uClinux ftp server depending on the ports accessed. Port 21 is forwarded to IP x, and port 9000 forwarded to IP y.
FTP'ing to port 21 works perfect. When trying to FTP to port 9000 the problems begin. Loggin in works. But trying a dir or get we typically get the "500 Illegal PORT command". The firewalls are disabled. This typically occurs if I FTP from within a small office network using simple routers. When trying from a very large facility the other day, everything worked perfectly. Can this be explaind by this large company having more intelligent routers, which detects that a FTP session is in progress and forwards the incoming connection to the correct IP? Anyway, one possible way could be to use Passive FTP to the uClinux ftp servers, but then I must be able to setup a limited port range for the ftp servers when they give the client the port to connect back to, so the customer can put this port range in the GPRS router's NAT. But I do not think this is possible with the inetutils ftpd? Is there any other ftp server usable in uClinux, which can be used as a placement for the inetutils ftpd so I can configure the Passive mode port range? Or am I missing some other possibility? I start to feel confused....:) Thank you... Martin _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
