Re: [opensuse] IPv4 - IPv6 proxy - "PortProxy"

On 07/14/2010 02:52 AM, James Knott wrote:
Frans de Boer wrote:
On 07/13/2010 10:53 PM, James Knott wrote:

In order to access IPv4 only devices over an IPv6 network, a proxy is
necessary, which converts the IPv4 address to IPv6. In Windows, it's
known as a PortProxy. Is there a similar proxy available in Linux?

tnx jk


I think you are mistaken. A Port Proxy is what the name said: a proxy
for TCP/UDP ports. It has nothing to do with IPv4/6 rather it converts a
single or range of ports to another single or range of ports.

Frans.


I am not mistaken.

From http://technet.microsoft.com/en-us/library/cc786629(WS.10).aspx :

"Enabling IPv4 Applications for IPv6
Updated: March 28, 2003
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows
Server 2003 with SP1, Windows Server 2003 with SP2
You can use the PortProxy service as an application-layer gateway for
nodes or applications that do not support IPv6. PortProxy facilitates
the communication between nodes or applications that cannot connect
using a common address type, Internet layer protocol (IPv4 or IPv6),
and TCP port. The primary purpose of the service is to allow IPv6
nodes to communicate with IPv4 TCP applications.
PortProxy relays TCP traffic from IPv4 to either IPv4 or IPv6, or from
IPv6 to either IPv6 or IPv4. In the context of IPv6/IPv4 coexistence
or migration, use the PortProxy service to enable any of the following
scenarios:
An IPv6 node accessing an IPv4-only application that is running on an
IPv4 node.

An IPv4-only node accessing an IPv6-only node.

An IPv6-only node accessing an IPv4-only node."


Ah, this is the world of Microsoft where a port proxy has a different
meaning then is commonly used.

I rest my case.

Frans.
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