Mailinglist Archive: opensuse (3221 mails)

[primm <lynn@xxxxxxxxxxxx>]

On Wednesday 28 November 2007 22:50:24 Theo v. Werkhoven wrote:
> Wed, 28 Nov 2007, by lynn@xxxxxxxxxxxx:
> > On Sunday 25 November 2007 12:42:25 Theo v. Werkhoven wrote:
> > > Sun, 25 Nov 2007, by lynn@xxxxxxxxxxxx:
> > > > I've opened ports 20, 21 and 1025 to 1029 via SuSEfirewall2 on 10.3.
> > > >
> > > > If all the ports are taken is there a way of telling the next user to
> > > > wait or try again later? As it is it just leaves them wondering and
> > > > waiting and allowing more users makes the system too slow.
> > > >
> > > > Am I correct in assuming it's one port per user?
> > >
> > > You're not using the correct way of handling this.
> > > Use vsftpd's  'max_clients' and 'max_per_ip' parameters to limit the
> > > number of users. That way excess users get a sensible error when
> > > they try to connect.
> > > See vsftpd.conf(5)
> >
> > Thanks. Works well.
> >
> > Still need one port per connection..
>
> Not possible with FTP.
> This protocol needs a socket pair for both the Data and the Command
> channel.
> For active FTP TCP dest. port 21 and source port 20, for
> passive FTP dest. port 21 plus a high dest. port.

So, using passive for 5 users I need 21 and 1025 to 1029. Or will just one 
high port do for all 5 connections?
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