change banner imap

Hi List,

I would like remove all banner which appear from my imap
server for example

#>telnet localhost 143
* OK [CAPABILITY IMAP ACL ACL2=UNION] Courier-IMAP ready.
Copyright 
1998-2004 Double Precision, Inc.  See COPYING for
distribution information.

I can' t  remove the text "Courier-IMAP ready.
Copyright 1998-2004 
Double Precision, Inc.  See COPYING for distribution
information."

I can change the parameters in the configuration file like 

IMAP_CAPABILITY_* but the text listed above I can't remove
it.

Can anyone help me?

Thanks in advance.

-- 
..................................................
             Mariví López López

          Catón Sistemas Alternativos
    Parque Tecnológico Ciencias de la Salud
   Edf. BIC Granada Avda de la Innovación, 1
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          Telf: +34 958 750 446
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.............. www.caton.es ..................... 



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Mariví López López writes:

> I can' t  remove the text "Courier-IMAP ready.
Copyright 1998-2004 
> Double Precision, Inc.  See COPYING for distribution
information."
> 
> I can change the parameters in the configuration file
like  
> IMAP_CAPABILITY_* but the text listed above I can't
remove it.
> 
> Can anyone help me?

What is the real problem you're trying to solve?



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----- Original Message ----- 
From: "Sam Varshavchik" <mrsamcourier-mta.com>
To: <courier-imaplists.sourceforge.net>
Sent: Thursday, March 01, 2007 6:18 PM
Subject: Re: [Courier-imap] change banner imap

>Mariví López López writes:
>
>> I can' t  remove the text "Courier-IMAP ready.
Copyright 1998-2004
> >Double Precision, Inc.  See COPYING for
distribution information."
> >
> >I can change the parameters in the configuration
file like
> >IMAP_CAPABILITY_* but the text listed above I can't
remove it.
>>
> >Can anyone help me?
>
>What is the real problem you're trying to solve?

Hi, Sam - i wouldn't mind changing that banner too. The
reason - i don't 
want people knowing what IMAP server i ran. Just like my
postfix is giving 
generic smtp banner. Even if i patch everything ontime,
there maybe specific 
scripted attacks. Now - i haven't seen any serious security
issues with 
Courier (thank you and all the other coders), so it's not an
urgent problem, 
but still....

Vadim


>
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> _______________________________________________
> Courier-imap mailing list
> Courier-imaplists.sourceforge.net
> Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-im
ap
> 


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On Thu, Mar 01, 2007 at 06:31:31PM -0500, vgrig_ushotmail.com wrote:
> 
> Hi, Sam - i wouldn't mind changing that banner too. The
reason - i don't 
> want people knowing what IMAP server i ran. Just like
my postfix is giving 
> generic smtp banner. Even if i patch everything ontime,
there maybe specific 
> scripted attacks. Now - i haven't seen any serious
security issues with 
> Courier (thank you and all the other coders), so it's
not an urgent problem, 
> but still....
> 
Well, security through obscurity is not very sound. 
Besides, hiding
what IMAP server you run, while allowing people to use
insecure
clear-text protocols seems sort of like rearranging deck
chairs on the
Titanic.

If your system is properly secured, it should not matter if
people know
what IMAP server (or really any other server) you are
running.

Regards,

-Roberto

-- 
Roberto C. Sanchez
http://people.con
nexer.com/~roberto
http://www.connexer.com

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----- Original Message ----- 
From: "Roberto C. Sanchez" <robertoconnexer.com>
To: <courier-imaplists.sourceforge.net>
Sent: Thursday, March 01, 2007 6:40 PM
Subject: Re: [Courier-imap] change banner imap

>On Thu, Mar 01, 2007 at 06:31:31PM -0500, vgrig_ushotmail.com wrote:
>>
> >Hi, Sam - i wouldn't mind changing that banner too.
The reason - i don't
>> want people knowing what IMAP server i ran. Just
like my postfix is 
>> giving
>> generic smtp banner. Even if i patch everything
ontime, there maybe 
>> specific
>> scripted attacks. Now - i haven't seen any serious
security issues with
>> Courier (thank you and all the other coders), so
it's not an urgent 
>> problem,
>> but still....
>>
>Well, security through obscurity is not very sound. 
Besides, hiding
>what IMAP server you run, while allowing people to use
insecure
>clear-text protocols seems sort of like rearranging deck
chairs on the
>Titanic.
>
>If your system is properly secured, it should not matter
if people know
>what IMAP server (or really any other server) you are
running.

I know all of that, Roberto. I don't run IMAP cleartext -
not even on local 
network. I don't want a script connecting with SSL to se
that banner - 
that's how paraniod i am. For example - i once sanitzed a
sympa mailing list 
server of any identifying marks...
As i said - it's not a big deal, but for me - it's still an
issue.

Vadim

>
>Regards,
>
>-Roberto
>
>-- 
Roberto C. Sanchez
http://people.con
nexer.com/~roberto
http://www.connexer.com



>
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> Courier-imaplists.sourceforge.net
> Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-im
ap
> 


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vgrig_ushotmail.com writes:

> 
> ----- Original Message ----- 
> From: "Sam Varshavchik" <mrsamcourier-mta.com>
> To: <courier-imaplists.sourceforge.net>
> Sent: Thursday, March 01, 2007 6:18 PM
> Subject: Re: [Courier-imap] change banner imap
> 
>>Mariví López López writes:
>>
>>> I can' t  remove the text "Courier-IMAP
ready. Copyright 1998-2004
>> >Double Precision, Inc.  See COPYING for
distribution information."
>> >
>> >I can change the parameters in the
configuration file like
>> >IMAP_CAPABILITY_* but the text listed above I
can't remove it.
>>>
>> >Can anyone help me?
>>
>>What is the real problem you're trying to solve?
> 
> Hi, Sam - i wouldn't mind changing that banner too. The
reason - i don't 
> want people knowing what IMAP server i ran. Just like
my postfix is giving 
> generic smtp banner. Even if i patch everything ontime,
there maybe specific 
> scripted attacks. Now - i haven't seen any serious
security issues with 
> Courier (thank you and all the other coders), so it's
not an urgent problem, 
> but still....

Security through obscurity does not work.



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vgrig_ushotmail.com wrote, on 02. mar 2007 00:56:

>>> Hi, Sam - i wouldn't mind changing that banner
too. The reason - i don't
>>> want people knowing what IMAP server i ran.
Just like my postfix is 
>>> giving
>>> generic smtp banner. Even if i patch everything
ontime, there maybe 
>>> specific
>>> scripted attacks. Now - i haven't seen any
serious security issues with
>>> Courier (thank you and all the other coders),
so it's not an urgent 
>>> problem,
>>> but still....
>>>
>> Well, security through obscurity is not very sound.
 Besides, hiding
>> what IMAP server you run, while allowing people to
use insecure
>> clear-text protocols seems sort of like rearranging
deck chairs on the
>> Titanic.
>>
>> If your system is properly secured, it should not
matter if people know
>> what IMAP server (or really any other server) you
are running.
> 
> I know all of that, Roberto. I don't run IMAP cleartext
- not even on local 
> network. I don't want a script connecting with SSL to
se that banner - 
> that's how paraniod i am. For example - i once sanitzed
a sympa mailing list 
> server of any identifying marks...
> As i said - it's not a big deal, but for me - it's
still an issue.

FWIW I've been running a Courier IMAP server, now at 4.1.2,
doing imaps 
and that says what it is for a local high school on the net
since 2004 - 
no security issues yet. I guess that site's only one of tens
or hundreds 
of thousands ... The site's running Postfix that says what
it is and 
makes mincemeat of would-be crackers.

--Tonni

-- 
Tony Earnshaw
Email: tonni at hetnet dot nl

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On Fri, Mar 02, 2007 at 11:17:42AM +0100, Mariv? L?pez L?pez
wrote:
> Hi,
> 
> I'm according to you, but my client does'nt understand
this reason, and 
> I need to remove the banner...exist any way to
eliminate all the imap 
> banner?

Yes - modify the code and recompile. Read the manpage for
"grep" if you need
to find out how to search the source code for this string.

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