RE: [WARP] UPnP & LAN

Hi,

Additionally to the below addresses we shall probably consider IPv6 addresses.

Thanks,
Marcin

Marcin Hanclik
ACCESS Systems Germany GmbH
Tel: +49-208-8290-6452  |  Fax: +49-208-8290-6465
Mobile: +49-163-8290-646
E-Mail: marcin.hanclik@access-company.com
From: public-webapps-request@w3.org [mailto:public-webapps-request@w3.org] On Behalf Of Marcin Hanclik
Sent: Tuesday, October 27, 2009 3:24 PM
To: public-webapps
Subject: [WARP] UPnP & LAN

Hi All,

These are some comments about the requirements for WARP to handle the UPnP traffic.


1.       UPnP uses multicast address 239.255.255.250.

2.       UPnP uses UDP-based HTTP (GENA, SSDP).

3.       The UPnP traffic takes place in local networks (LAN), therefore we shall assume that the host addresses will be from one of the private IP ranges [1]:

     10.0.0.0        -   10.255.255.255  (10/8 prefix)

     172.16.0.0      -   172.31.255.255  (172.16/12 prefix)

     192.168.0.0     -   192.168.255.255 (192.168/16 prefix)

a.       We shall be able to assume that all private LANs are configured correctly with the above addresses and exclude other considerations/misconfigurations (alternatively we could mandate checking the DHCP configuration - masks etc. in the host to derive what the local network is, but it may lead us nowhere)

4.       It is a security-related decision whether an application / widget may access both the Internet and the LAN network at the same time.

a.       Some interesting use cases may be realized.

                                                               i.      E.g. storage of the Internet-downloaded content (e.g. XHR's GET) onto UPnP device or e.g. SVN repository in LAN.

b.      Privacy is a concern.

Thanks,
Marcin

[1] http://tools.ietf.org/html/rfc1918
Marcin Hanclik
ACCESS Systems Germany GmbH
Tel: +49-208-8290-6452  |  Fax: +49-208-8290-6465
Mobile: +49-163-8290-646
E-Mail: marcin.hanclik@access-company.com

________________________________
________________________________________

Access Systems Germany GmbH
Essener Strasse 5 | D-46047 Oberhausen
HRB 13548 Amtsgericht Duisburg
Geschaeftsfuehrer: Michel Piquemal, Tomonori Watanabe, Yusuke Kanda

www.access-company.com

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________________________________
________________________________________

Access Systems Germany GmbH
Essener Strasse 5 | D-46047 Oberhausen
HRB 13548 Amtsgericht Duisburg
Geschaeftsfuehrer: Michel Piquemal, Tomonori Watanabe, Yusuke Kanda

www.access-company.com

CONFIDENTIALITY NOTICE
This e-mail and any attachments hereto may contain information that is privileged or confidential, and is intended for use only by the
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If you have received this document in error, please notify us promptly by responding to this e-mail. Thank you.