[Openvpn-users] Use a tunnel to run an SMTP server, use IRC through it etc

[phonic@xxxxxxxxxxxxx]

Hello

I've successfully set up a tunnel between a box addressed with a /28, and
my home box. I want to use the tunnel to get around my ISP's port 25
block, use IRC etc.

The problem is that I can't reach the tunneled address from the net (just
from the two involved boxes). How do I solve this?

I think the problem is that nothing is listening on 192.121.234.222 at the
/28-box. But if I add a virtual interface with that address, the /28-box
itself responds to ping. It does not forward the ping through the tunnel.



My configs:
server.conf
-----------
local 192.121.234.220
dev tun
ifconfig 192.121.234.221 192.121.234.222
comp-lzo
ping 15
secret static.key

client.conf
-----------
remote 192.121.234.220
dev tun
ifconfig 192.121.234.222 192.121.234.221
comp-lzo
ping 15
secret static.key



ifconfig dump from the /28-box:
eth1      Link encap:Ethernet  HWaddr 00:A0:C9:D8:44:F9
          inet addr:192.121.234.220  Bcast:192.121.234.223 
Mask:255.255.255.240

eth1:0    Link encap:Ethernet  HWaddr 00:A0:C9:D8:44:F9
          inet addr:192.121.234.221  Bcast:192.121.234.223 
Mask:255.255.255.240

tun0      Link encap:UNSPEC  HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:192.121.234.221  P-t-P:192.121.234.222 
Mask:255.255.255.255

snip from the routing table at the same box:
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.121.234.222 *               255.255.255.255 UH    0      0        0 tun0



ifconfig from my home box (I guess only tun0 is relevant):
tun0      Link encap:UNSPEC  HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:192.121.234.222  P-t-P:192.121.234.221 
Mask:255.255.255.255

and a snip from the routing table:
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.121.234.221 *               255.255.255.255 UH    0      0        0 tun0


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