Sun, 2006-01-15 at 20:34 +0800, William Xu wrote:
Hi, people there,

i connect to the internet by tunnelling through a VPN server. Now my
machine has the same IP as the server's. (my machine itself has a
different static IP). So now seems i'm unable to access my machine from
the internet. Any solutions to this?

If you mean that the IP assigned to your PPP daemon and the IP of the
server are the same, then yah it's a big problem there are some
solutions on the Web site, and I also posted about this in , 2005
(check my first messsage on the list)

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Sun, 2006-01-15 at 23:50 +0800, William Xu wrote:

>i connect to the internet by tunnelling through a VPN server. Now my
>machine has the same IP as the server's. (my machine itself has a
>different static IP). So now seems i'm unable to access my machine from
>the internet. Any solutions to this?
>
If you mean that the IP assigned to your PPP daemon

You mean this?

williamxu:/home/william# ifconfig ppp0 |grep inet
inet addr:10.23.0.18 P-t-P:10.23.0.1 Mask:255.255.255.255

What does "netstat -r" show? If one of the "destination" is 10.23.0.1
then you're in trouble, because when you try to send stuff through your
PPP tunnel, the PPP tunnel then tries to send stuff back by itself,
because it has the IP of the "destination" it's trying to reach

#same-ip
#lots_of_data

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Mon, 2006-01-16 at 00:23 +0800, William Xu wrote:

williamxu:/home/william# netstat -r
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
10.23.0.1 * 255.255.255.255 UH 0 0 0 ppp0
localnet * 255.255.255.0 U 0 0 0 eth0
default * 0.0.0.0 U 0 0 0 ppp0

well, it seems like your PPTP server is 10.23.0.1 since it gets
overridden by ppp0 so, you will have to trick your setup to change
the peer IP of ppp0 to anything else so it does not override your
routing to the PPTP Server read on the Web site for this

#same-ip
#lots_of_data

Just wondering, does anybody know if there would be any harm in setting
up a checkbox or something in pptpconfig (or other tools) that would
automatically assign an internal address to the peer side of the PPP
interface for the tunnel?

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Mon, 2006-01-16 at 10:47 +0800, William Xu wrote:
Samuel Audet <guardia (AT) sympatico (DOT) cawrites:

Mon, 2006-01-16 at 00:23 +0800, William Xu wrote:
>
>williamxu:/home/william# netstat -r
>Kernel IP routing table
>Destination Gateway Genmask Flags MSS Window irtt Iface
>10.23.0.1 * 255.255.255.255 UH 0 0 0 ppp0
>localnet * 255.255.255.0 U 0 0 0 eth0
>default * 0.0.0.0 U 0 0 0 ppp0
>
well, it seems like your PPTP server is 10.23.0.1 since it gets
overridden by ppp0 so, you will have to trick your setup to change
the peer IP of ppp0 to anything else so it does not override your
routing to the PPTP Server read on the Web site for this

#same-ip
#lots_of_data

Seems that's not the same as mine. My network looks like,

10.23.0.18 10.23.0.1
++ ppp0 ++ ++
|client|| server || internet |
++ ++ ++
59.66.131.187 59.66.131.181

The IP 59.66.131.187 is unknown in the "internet".

Really? My whois client tells me it's assigned to Zijing Campus 2nd
Phase, Tsinghua University.

Paul.

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