[OT] Proftp and Firewalls

[Alex Snow]

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try playing with passive mode. even though my server is dmzed my 
router still causes anoying problems when the client isn't in passive 
mode for some reason.
On Mon, Jun 21, 2004 at 01:13:45PM -0700, Steve 
Holmes wrote:
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> Hey,  I'm wondering if and how one can run proftp on a linux server
> behind a router.  In my case, the incoming request is port forwarded
> to my machine running proftpd and so far, I can access the basic login
> prompts but I cannot list directories from any outside machines.  If I
> use a simple command line client outside, the last thing I see after
> typing 'ls' is "port command successful" and then it just hangs.  I
> think it's got to do with active vs passive FTP but not sure in this
> direction.
> 
> On my router, I have the outside port set to 7021 and the destination
> port set to 21 and proftpd on the inside machine listens on port 21.
> So my connections set up find.  Oh, I can access all proper functions
> of this ftp server on my local network with no problems.  Do I have to
> do something with the data port as well, and if so, what ot I set it
> to?  My ISP blocks inbound FTP port 21 so that's why the high number.
> 
> Any ideas? I hope my question makes sense.
> - -- 
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> http://ld.net/?holmesgrown
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