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Re: [LUG] Re: tcpdump



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Neil Williams wrote:
| On Thursday 26 August 2004 10:05, you wrote:
|
| It's not in the source. Check what I sent last time - the FTP daemon
chooses a
| different high number port for each session - sometimes each transmission
| within a session. This increases efficiency but can confuse some
simplistic
| firewalls. FTP doesn't have fixed ports, apart from at the beginning.

I thought this problem was before the other ports come in, but I wasn't
paying attention.

You such be able to login, and type "pasv" into an ordinary ftp client
(not crap like the old MS-DOS version), before any funny business
happens, otherwise passive mode wouldn't work, and passive mode always
works ;) (if both ends support it).

(Okay "always" is a bit strong, I've seen it fail on Windows, but that
isn't exactly surprising, but generally passive mode is straightforward
enough that once you get started you finish).
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