IP Address

Hi All,

How do I get the source IP of a packet, not knowing if NAT has taken place.

Thanks In Advance

Oct 20 '06 #1

1622

Hello, MMA!

Socket.RemoteEndpoint gives the source address of the received packet.

You wrote on Fri, 20 Oct 2006 06:31:02 -0700:

MHow do I get the source IP of a packet, not knowing if NAT has taken
Mplace.

MThanks In Advance
--
With best regards, Vadym Stetsyak.
Blog: http://vadmyst.blogspot.com

Oct 20 '06 #2

Dave Sexton

Hi,

But won't RemoteEndpoint only give the address of a router and not the LAN IP
of the source machine? (which I suspect MMA is after)

If I'm correct, then maybe knowing why you want the source IP would be useful.
You might get a more appropriate response if you let us know.

--
Dave Sexton

"Vadym Stetsyak" <va*****@ukr.netwrote in message
news:uR**************@TK2MSFTNGP04.phx.gbl...

Hello, MMA!

Socket.RemoteEndpoint gives the source address of the received packet.

You wrote on Fri, 20 Oct 2006 06:31:02 -0700:

MHow do I get the source IP of a packet, not knowing if NAT has taken
Mplace.

MThanks In Advance
--
With best regards, Vadym Stetsyak.
Blog: http://vadmyst.blogspot.com

Oct 21 '06 #3

Vadym Stetsyak

Hello, Dave!

DSBut won't RemoteEndpoint only give the address of a router and not
DSthe LAN IP
DSof the source machine? (which I suspect MMA is after)

AFAIK no. When you're connecting to the remote host, you do not
know if there is any router out there ( or if there is route to this
machine ).

you can open microsoft.com, and then use "netstat -an -p tcp" command,
you'll observe that you're connected to MS endpoint and not the router.

DSIf I'm correct, then maybe knowing why you want the source IP would
DSbe useful.
DSYou might get a more appropriate response if you let us know.

DS--
DSDave Sexton

DS"Vadym Stetsyak" <va*****@ukr.netwrote in message
DSnews:uR**************@TK2MSFTNGP04.phx.gbl...

>Hello, MMA!

>Socket.RemoteEndpoint gives the source address of the received packet.

>You wrote on Fri, 20 Oct 2006 06:31:02 -0700:

>MHow do I get the source IP of a packet, not knowing if NAT has
taken
Mplace.

>MThanks In Advance

--
With best regards, Vadym Stetsyak.
Blog: http://vadmyst.blogspot.com

Oct 21 '06 #4

Dave Sexton

Hi Vadym,

I wasn't clear in my response. I was referring to a "remote" router, not
local NAT.

I believe I just took the OP's question too literally. I guess "NAT" means
"local NAT" in the OP :)

Thanks for the reply.

--
Dave Sexton

"Vadym Stetsyak" <va*****@ukr.netwrote in message
news:uk*************@TK2MSFTNGP05.phx.gbl...

Hello, Dave!

DSBut won't RemoteEndpoint only give the address of a router and not
DSthe LAN IP
DSof the source machine? (which I suspect MMA is after)

AFAIK no. When you're connecting to the remote host, you do not
know if there is any router out there ( or if there is route to this
machine ).

you can open microsoft.com, and then use "netstat -an -p tcp" command,
you'll observe that you're connected to MS endpoint and not the router.

DSIf I'm correct, then maybe knowing why you want the source IP would
DSbe useful.
DSYou might get a more appropriate response if you let us know.

DS--
DSDave Sexton

DS"Vadym Stetsyak" <va*****@ukr.netwrote in message
DSnews:uR**************@TK2MSFTNGP04.phx.gbl...

>>Hello, MMA!

>>Socket.RemoteEndpoint gives the source address of the received packet.

>>You wrote on Fri, 20 Oct 2006 06:31:02 -0700:

>>MHow do I get the source IP of a packet, not knowing if NAT has
taken
Mplace.

>>MThanks In Advance

--
With best regards, Vadym Stetsyak.
Blog: http://vadmyst.blogspot.com

Oct 21 '06 #5

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