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Article #3Re: FTP and NAT
From: Georg Kreyerhoff
Date: Fri, 29 Oct 1999 00:00
Date: Fri, 29 Oct 1999 00:00
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"Beau Clark" <bmclark@sprintparanet.com> writes: > I only have one real world address. So I am running Network address > Translation. I set up a FTP server internally with a 10.*.*.* address. On > the router, I set it to redirect all traffic on port 21 to the proper > internal 10.*.*.* address. Externally when I try and connect to the FTP > server. I am able to connect, it processes my username and password, but > then it will not let me upload or download files. It also will not give me > a directory list. I can change directorys, I just can not do anything else > on the FTP server. If I connect in passive mode, it authenticates me and > then tries to switch to the 10.*.*.* address with the random port number. > Any ideas on how to work around this would be greatly appreciated. > the ftp-server builds up a second connection on port 20. You have to allow outgoing connections from the server to the client on that port. Georg > Thanks
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f922c,455871d06528e7a3 X-Google-Attributes: gidf922c,public X-Google-Thread: 100902,455871d06528e7a3 X-Google-Attributes: gid100902,public X-Google-Thread: fc301,455871d06528e7a3 X-Google-Attributes: gidfc301,public X-Google-Thread: fc6f6,455871d06528e7a3 X-Google-Attributes: gidfc6f6,public From: Georg Kreyerhoff <georg@lemnatec.de> Subject: Re: FTP and NAT Date: 1999/10/29 Message-ID: <871zaecv70.fsf@dual1.lemnatec.de> X-Deja-AN: 542012785 Sender: georg@dual1.lemnatec.de References: <7vab32$ob3$1@birch.prod.itd.earthlink.net> Organization: LemnaTec GmbH Newsgroups: tnn.internet.firewall,list.firewall,comp.security.firewalls,at.mail.firewalls