My IP address with DHCP

[Gregory Nowak]

Hi Chuck.

The inet addr is your ip address. Remember that ppp0 is a point to
point interface, which means that even though you have an ip address
visible to the world assigned by the ppp gateway, you are actually
connecting from a separate private address assigned to you by the
gateway, to an interface address on that gateway which is also
private. Thus a point to point connection.

With eth0, you don't have a point to point connection, but you do have
an ethernet connection which means your inet addr is the address the
rest of the world knows you by, and there are no intermediate
addresses between you and your isp like you have with ppp.

Hope that helped, and that it wasn't too confusing.

Greg


On Sun, Jan 11, 2004 at 08:12:30PM -0500, Chuck Hallenbeck wrote:
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> Hi people,
> 
> I am confused (for a change?)
> 
> My cable modem connection works like a charm, so maybe I should
> leave it alone. But I am confused about my IP address and that of
> the host to which I am connecting.
> 
> With the ppp0 interface, I can find both the remote and the local
> IP addresses, but with the eth0 interface, ifconfig reports only
> one address, which it calls "inet addr:". Is that me? Or is it my
> ISP?  I have assumed it is my ISP, and have used it as such in my
> firewall script, which is working great. But then what is my own
> IP address, the one that used to be called a local IP address
> with ppp0?
> 
> I am seeing weird entries in my firewall log with destination
> addresses matching what ifconfig calls the "inet addr:" and I am
> not sure if that is my address, or my ISP's?
> 
> Any advice will be handsomely rewarded.
> 
> Chuck
> 
> 
> - -- 
> The Moon is Waning Gibbous (82% of Full)
> In a world without Fences or Walls no one needs Windows or Gates.
> My home page is now at http://www.mhcable.com/~chuckh
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