Re: [Netconf] Netconf Notification: One last bit of Discuss: Session Accumulation

["Sharon Chisholm" <schishol at nortel.com>]

Hi

That version works for me.

Sharon 

-----Original Message-----
From: Juergen Schoenwaelder
[mailto:j.schoenwaelder at jacobs-university.de] 
Sent: Monday, June 16, 2008 1:10 PM
To: Chisholm, Sharon (CAR:ZZ00)
Cc: netconf at ietf.org
Subject: Re: [Netconf] Netconf Notification: One last bit of Discuss:
Session Accumulation

On Mon, Jun 16, 2008 at 07:52:51AM -0400, Sharon Chisholm wrote:
 
> If a malicious or buggy NETCONF client sends a number of 
> <create-subscription> requests  without ever terminating any of them, 
> they will accumulate subscriptions and begin to use up system
resources.
> They do so while accumulating NETCONF sessions and when the underlying

> NETCONF session is terminated, so is the Notification subscription. 
> The <kill-session> operation should be used to terminate any suspect 
> NETCONF sessions.

I do not understand the second sentence. And who is "they" in the first
sentence? What about this wording:

  If a malicious or buggy NETCONF client sends a number of
  <create-subscription> requests, then these subscriptions accumulate
  and may use up system resources. In such a situation, subscriptions
  can be terminated by terminating the suspect underlying NETCONF
  sessions using the From netconf-bounces at ietf.org  Mon Jun 16 10:43:25 2008
Return-Path: <netconf-bounces at ietf.org>
X-Original-To: netconf-archive at lists.ietf.org
Delivered-To: ietfarch-netconf-archive at core3.amsl.com
Received: from [127.0.0.1] (localhost [127.0.0.1])
	by core3.amsl.com (Postfix) with ESMTP id 06B2A3A6944;
	Mon, 16 Jun 2008 10:43:25 -0700 (PDT)
X-Original-To: netconf at core3.amsl.com
Delivered-To: netconf at core3.amsl.com
Received: from localhost (localhost [127.0.0.1])
	by core3.amsl.com (Postfix) with ESMTP id E5AEC3A6944
	for <netconf at core3.amsl.com>; Mon, 16 Jun 2008 10:43:23 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.486
X-Spam-Level: 
X-Spam-Status: No, score=-6.486 tagged_above=-999 required=5 tests=[AWL=0.113, 
	BAYES_00=-2.599, RCVD_IN_DNSWL_MED=-4]
Received: from mail.ietf.org ([64.170.98.32])
	by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id iquHDwAl276F for <netconf at core3.amsl.com>;
	Mon, 16 Jun 2008 10:43:23 -0700 (PDT)
Received: from zcars04f.nortel.com (zcars04f.nortel.com [47.129.242.57])
	by core3.amsl.com (Postfix) with ESMTP id CE24D3A67DA
	for <netconf at ietf.org>; Mon, 16 Jun 2008 10:43:22 -0700 (PDT)
Received: from zcarhxm2.corp.nortel.com (zcarhxm2.corp.nortel.com
	[47.129.230.99])
	by zcars04f.nortel.com (Switch-2.2.6/Switch-2.2.0) with ESMTP id
	m5GHi0l14693; Mon, 16 Jun 2008 17:44:01 GMT
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Date: Mon, 16 Jun 2008 13:43:59 -0400
Message-ID: <713043CE8B8E1348AF3C546DBE02C1B4150B517C at zcarhxm2.corp.nortel.com>
In-Reply-To: <20080616171006.GA5003 at elstar.local>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: [Netconf] Netconf Notification: One last bit of Discuss: Session
	Accumulation
Thread-Index: AcjP09pThYBwizEeQL+GUxmVjuyZUAABKmzQ
References: <713043CE8B8E1348AF3C546DBE02C1B4150B48B3 at zcarhxm2.corp.nortel.com>
	<20080616171006.GA5003 at elstar.local>
From: "Sharon Chisholm" <schishol at nortel.com>
To: <j.schoenwaelder at jacobs-university.de>
Cc: netconf at ietf.org
Subject: Re: [Netconf] Netconf Notification: One last bit of Discuss:
	Session Accumulation
X-BeenThere: netconf at ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Network Configuration WG mailing list <netconf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/netconf>,
	<mailto:netconf-request at ietf.org?subject=unsubscribe>
List-Archive: <https://www.ietf.org/mailman/private/netconf>
List-Post: <mailto:netconf at ietf.org>
List-Help: <mailto:netconf-request at ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/netconf>,
	<mailto:netconf-request at ietf.org?subject=subscribe>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Sender: netconf-bounces at ietf.org
Errors-To: netconf-bounces at ietf.org

Hi

That version works for me.

Sharon 

-----Original Message-----
From: Juergen Schoenwaelder
[mailto:j.schoenwaelder at jacobs-university.de] 
Sent: Monday, June 16, 2008 1:10 PM
To: Chisholm, Sharon (CAR:ZZ00)
Cc: netconf at ietf.org
Subject: Re: [Netconf] Netconf Notification: One last bit of Discuss:
Session Accumulation

On Mon, Jun 16, 2008 at 07:52:51AM -0400, Sharon Chisholm wrote:
 
> If a malicious or buggy NETCONF client sends a number of 
> <create-subscription> requests  without ever terminating any of them, 
> they will accumulate subscriptions and begin to use up system
resources.
> They do so while accumulating NETCONF sessions and when the underlying

> NETCONF session is terminated, so is the Notification subscription. 
> The <kill-session> operation should be used to terminate any suspect 
> NETCONF sessions.

I do not understand the second sentence. And who is "they" in the first
sentence? What about this wording:

  If a malicious or buggy NETCONF client sends a number of
  <create-subscription> requests, then these subscriptions accumulate
  and may use up system resources. In such a situation, subscriptions
  can be terminated by terminating the suspect underlying NETCONF
  sessions using the <kill-session> operation.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
_______________________________________________
Netconf mailing list
Netconf at ietf.org
https://www.ietf.org/mailman/listinfo/netconf