1. RE: Reaching Behind Router
CK -
If a PC has IP addressing which is not advertised to the outside , which means
it is typically setting behind a firewall OR router, than there isn't much one
can do unless you can get the Firewall OR Router admin to " statically NAT " a
public routable IP address to your PC's private IP. There's already a NAT type
of action taking place, but its a dynamic one, probably with a POOL of public
addresses. Of course , this now starts to unprotect your PC, as it becomes KNOWN
to the outside world. But, if you NAT an address to a particular TCP PORT on
your PC, pick one that your program opens the socket on, then you'll still be
fairly protected.
Good luck !!!
-----Original Message-----
From: cklester [mailto:guest at RapidEuphoria.com]
Sent: Tuesday, May 25, 2004 12:16 PM
To: EUforum at topica.com
Subject: Reaching Behind Router
I'm trying to get two programs to contact each other, but my PC is behind
a router. So, the IP address I get is either for the internal network,
which can't be used by someone outside to contact me, or the IP of the
router, which won't necessarily know to route to my PC.
So, how do I get two PCs communicating with TCP/IP when one or both are
behind routers?
2. RE: Reaching Behind Router
Hance, Michael wrote:
> If a PC has IP addressing which is not advertised to the outside , which
> means
> it is typically setting behind a firewall OR router, then there isn't much one
> can do unless you can get the Firewall OR Router admin to " statically NAT " a
> public routable IP address to your PC's private IP. There's already a NAT type
> of action taking place, but its a dynamic one, probably with a POOL of public
> addresses. Of course , this now starts to unprotect your PC, as it becomes
> KNOWN
> to the outside world. But, if you NAT an address to a particular TCP PORT on
> your PC, pick one that your program opens the socket on, then you'll still be
> fairly protected.
Thanks Michael and Dan for your input. Unfortunately, I have no idea what
you said. :) Okay, I understand a bit of it, but I don't know what to do
to get my PC communicating with another via TCP/IP, especially when they
are each possibly behind a router/firewall. I know that I could
probably play Unreal Tournament on this PC and get a connection to some
outside server out there, but I don't know how to do it with EUPHORIA.
The configuration of the connection is this:
UserPC <-> Router/Firewall <-> Internet <-> MyRouter <-> MyPC
I hope I'm clear on what I need! :)
3. RE: Reaching Behind Router
This is a multi-part message in MIME format.
--bound1085524490
It looks like your trying to connect two computers throught the Internet.
Someone is going to have to open up the firewall/routers at both ends to allow
them to pass PPTP ( Point to Point Tunneling Protocol ). Then you can setup a VPN
connection on a workstation to allow it to connect to the network at the other
end of the Internet. Search the Internet ( Google ) for Instructions on how to do
this. Better yet ask the network administrators on the networks involved if they
already have the VPN setup. Once they give you the VPN information, your in! Of
course you'll have to have a user ID and password to get in.
Dan
cklester <guest at RapidEuphoria.com> wrote ..
>
>
> posted by: cklester <cklester at yahoo.com>
>
> Hance, Michael wrote:
>
> > If a PC has IP addressing which is not advertised to the outside , which
> means
> > it is typically setting behind a firewall OR router, then there isn't
> much one
> > can do unless you can get the Firewall OR Router admin to " statically
> NAT " a
> > public routable IP address to your PC's private IP. There's already a
> NAT type
> > of action taking place, but its a dynamic one, probably with a POOL of
> public
> > addresses. Of course , this now starts to unprotect your PC, as it becomes
> KNOWN
> > to the outside world. But, if you NAT an address to a particular TCP
> PORT on
> > your PC, pick one that your program opens the socket on, then you'll
> still be
> > fairly protected.
>
> Thanks Michael and Dan for your input. Unfortunately, I have no idea what
> you said. :) Okay, I understand a bit of it, but I don't know what to do
> to get my PC communicating with another via TCP/IP, especially when they
> are each possibly behind a router/firewall. I know that I could
> probably play Unreal Tournament on this PC and get a connection to some
> outside server out there, but I don't know how to do it with EUPHORIA.
>
> The configuration of the connection is this:
>
> UserPC <-> Router/Firewall <-> Internet <-> MyRouter <-> MyPC
>
> I hope I'm clear on what I need! :)
>
>
>
--bound1085524490--
