Port remapping

Hi all!

Reading about NetSh command, I saw a port remapping. It's in context 'netsh
interface portproxy'. I decided to check working of this and entered:

netsh interface portproxy add v4tov4 666 127.0.0.1 80 127.0.0.1 tcp

I think, after executing this command all TCP packets incoming to port 666
must be redirected to port 80 where HTTP-server is being working. For
checking, I run telnet.exe and try to open port 666:

open 127.0.0.1 666

But I can't connect ( As before port mapping, so after it port 666
behavior is similar. It seems to be closed. If I try to connect to port 80
directly, I manage to do it. But if I try to connect to port 666, telnet
answers it can't connect.

RRAS turned on. Windows firewall turned off. Another firewalls are absent. I
tried that command in diferent cases and on diferent computers, but the
result is the same. I already have a headache. Where is the problem??

WBR Alex.

It may be some things to do with IPV6MON.DLL. Quoted from Microsoft article:

"Netsh.exe is a tool an administrator can use to configure and monitor
Windows-based computers at a command prompt. The Netsh.exe tool direct the
context commands you enter to the appropriate helper, and the helper then
carries out the command. A helper is a Dynamic Link Library (.dll) file that
extends the functionality of the Netsh.exe tool by providing configuration,
monitoring, and support for one or more services, utilities, or protocols.
The <add v4tov4> command is sent to the IPV6MON.DLL helper, and because of
that it will work only if IPv6 protocol is installed".

--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"Alex B." <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi all!
>
> Reading about NetSh command, I saw a port remapping. It's in context
> 'netsh
> interface portproxy'. I decided to check working of this and entered:
>
> netsh interface portproxy add v4tov4 666 127.0.0.1 80 127.0.0.1 tcp
>
> I think, after executing this command all TCP packets incoming to port 666
> must be redirected to port 80 where HTTP-server is being working. For
> checking, I run telnet.exe and try to open port 666:
>
> open 127.0.0.1 666
>
> But I can't connect ( As before port mapping, so after it port 666
> behavior is similar. It seems to be closed. If I try to connect to port 80
> directly, I manage to do it. But if I try to connect to port 666, telnet
> answers it can't connect.
>
> RRAS turned on. Windows firewall turned off. Another firewalls are absent.
> I
> tried that command in diferent cases and on diferent computers, but the
> result is the same. I already have a headache. Where is the problem??
>
> WBR Alex.
>
>

Hi!

I've already found and read that article
(http://support.microsoft.com/kb/555744). But my ipv6mon.dll seems to be all
right. I executed 'show helper' command in 'netsh interface portproxy'
context and got info about that library presence. I think if some problems
with ipv6mon.dll were, I would got a mistake during trying to remap ports.
But I don't get any mistakes and when I execute 'show' command later I get
info about port remapping presence.
I wonder if there's a human who managed to use port remapping with 'netsh
interface portproxy' anywhere

Alex.


"Robert L. (MS-MVP)" <(E-Mail Removed)> ???????/???????? ?
???????? ?????????: news:(E-Mail Removed)...
> It may be some things to do with IPV6MON.DLL. Quoted from Microsoft
article:
>
> "Netsh.exe is a tool an administrator can use to configure and monitor
> Windows-based computers at a command prompt. The Netsh.exe tool direct the
> context commands you enter to the appropriate helper, and the helper then
> carries out the command. A helper is a Dynamic Link Library (.dll) file
that
> extends the functionality of the Netsh.exe tool by providing
configuration,
> monitoring, and support for one or more services, utilities, or protocols.
> The <add v4tov4> command is sent to the IPV6MON.DLL helper, and because of
> that it will work only if IPv6 protocol is installed".

"Alex B." <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
news:(E-Mail Removed)...

> I wonder if there's a human who managed to use port remapping with 'netsh
> interface portproxy' anywhere

Well... I see, nobody can use port remapping in Windows... :-]