The following document may be of interest to Q.5
-----Original Message----- From: i-d-announce-bounces@ietf.org [mailto:i-d-announce-bounces@ietf.org] On Behalf Of Internet-Drafts@ietf.org Sent: Dienstag, 15. Februar 2005 16:32 To: i-d-announce@ietf.org Cc: iab@iab.org Subject: I-D ACTION:draft-iab-nat-traversal-considerations-00.txt
A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Internet Architecture Board Working Group of the IETF.
Title : Considerations for Selection of Techniques for NAT Traversal Author(s) : J. Rosenberg Filename : draft-iab-nat-traversal-considerations-00.txt Pages : 21 Date : 2005-2-14 There are many protocols designed and deployed on the Internet today which do not naturally traverse Network Address Translators (NAT). In order to allow these protocols to work in the presence of NAT, additional logic needs to be added to the network. This logic modifies the behavior of the protocol in some way. There are choices where this logic can be placed in the network. It can reside in the NATs themselves, transparently altering the protocol; when this occurs, it is called an Application Layer Gateway (ALG). It can reside in server components, hiding the changes from NATs and clients alike, it can reside in the clients, or it can reside in a combination thereof. The choice of the placement of this logic typically has implications on many aspects of the protocol, including security, deployability, manageability and availability. This document provides a set of considerations that should be taken into account by protocol and network designers when making this choice.
A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-iab-nat-traversal-considerations -00.txt
To remove yourself from the I-D Announcement list, send a message to i-d-announce-request@ietf.org with the word unsubscribe in the body of the message. You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce to change your subscription settings.
Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-iab-nat-traversal-considerations-00.txt".
A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
Internet-Drafts can also be obtained by e-mail.
Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-iab-nat-traversal-considerations-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
------------------------------------------------------------------------- CONTENT ABOVE THIS LINE IS *NOT* FROM CISCO INFORMATION TECHNOLOGY ------------------------------------------------------------------------- In order to maintain computing infrastructure integrity, Cisco Systems Enterprise Messaging Services and InfoSec teams have set a mail policy disallowing executable attachments in email.
This message contained an executable attachment type that is prohibited by this policy. The attachment has been removed from this message and copied to quarantine by our systems. It will be held in quarantine for seven days in the event that the content needs to be retrieved.
Please be aware many viruses attempt to look like legitimate email or notifications from anti-virus systems. We will clearly mark a seperation between our notifications and the original email as follows:
"CONTENT ABOVE THIS LINE IS *NOT* FROM CISCO INFORMATION TECHNOLOGY"
For further reference information about viruses and email antivirus efforts within Cisco, please visit:
http://wwwin.cisco.com/it/ems/services/antiviral
If your concern isn't addressed by the information in this notification or the above web page, you may open a support request:
http://wwwin.cisco.com/support/
Select "Messaging", "Email-Related", "Mail Routing"
Please include in the text of your case the following information:
* Full headers of the message. Documentation on displaying the full headers is available at this URL:
http://wwwin.cisco.com/support/library/faqs/solution002471.html
* This unique quarantine identifier: j1FIX8Tj029899
If the matter is urgent, you may follow up by calling one of the below referenced numbers. Please make every effort to provide the above requested information via the support web tool prior to calling as it will greatly aid the resolution of your issue.
Americas: 1 408 526 8888
Asiapac +61 2 8446 8888
EMEA +31 20 485 4888
Japan +81 3 5549 6888
US (Toll Free) 1| 800| 888| 8187| (ext.68888)
Thank you for your cooperation,
Enterprise Messaging Services Cisco Systems, Inc