Hello Daniel, Thanks for your answer. I try it and I got a problem, it looks like that the ctrl session from the local network to the external FTP server is ok (source port xxx and destination port 21), but the data session is block. As you know (for FTP in activ mode) when a transfert data session is requested, a session from the external server is initiated to the local network (source port 20 and destination xxy). I think that this session initiated from an external address to an internal network is droped by the router. I didn't make a Wireshark trace yet to check it, I will do it A.S.A.P. Usually with a dynamic Firewall, the ctrl session is read, and the return data session is open automaticaly. Question: Do you know how is it possible to create a DMZ on an Internet Box Plus, the Swisscom page said it possible and do not explain how to do it (Only available for Expert). Thanks in advance for your answer. Best regards Bernard
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