[Rumpus-talk] Feature Requests.

[Nigel Holmes]

I can see your point, how about if Rumpus only sees noop's coming from
IP address XYZ, then auto kill/reset the connection.
You could also set a variable if more than N noops are received one
after the other (and no other valid traffic is received) then kill/Reset
the connection.
This would then be a clear way to identify someone who has effectively
left their machine on just doing a ping.

Regards,

Nigel Holmes


-----Original Message-----
From: rumpus-talk-bounces at maxum.com
[mailto:rumpus-talk-bounces at maxum.com] On Behalf Of John O'Fallon
Sent: 24 September 2009 13:10
To: Rumpus-Talk
Subject: Re: [Rumpus-talk] Feature Requests.

> The ability to choose to prevent users using the noop command to  
> keep sessions alive.

There is no way to prevent an FTP client from sending any particular  
command.  If Rumpus were to return an error on the NOOP command, many  
clients would probably just terminate the session, so that's not  
really an option, either.  Also, even if Rumpus did disable NOOP, the  
client could just issue some other command to reset the inactivity  
timer.  Fetch, for example, uses "PWD", which is a mandatory command  
an FTP server must reply to.

Unfortunately, the only good solution to this is to educate users that  
they shouldn't leave FTP clients connected 24/7.

John

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