Hi.
After discovering the possibilities of openvpn I need help to find the
configuration that will solve my problem.
The situation is as follows:
*The LAN (let's call it net1) that I need access to is behind to
separate NAT levels.
The first one can be bypassed since I can freely open ports on the
gateway but the second is mantained by my ISP and I can't touch that.
*The clients will connect from an internal network (net2) that blocks
traffic on all ports other than 80, 22 (ssh works flawlessly) and 21
(ftp accepts GETs put no PUTs, I suppose there is a transparent proxy
running on the gateway).
Note that I can have unlimited access to another linux server (net3)
with public static IP address.
I have been using a tunnelling application (www.hamachi.cc) for when I
need to connect to a net1's server but that doesn't obviously work on
net2 where the UDP traffic is also blocked.
Since net1 and net3 are on the same Hamachi's VPN I figured that setting
up OpenVPN on net3 will allow me to reach net1 from net2:
---- ---- ----
|net2| ------ OpenVPN ---->> |net3| ------ Hamachi ---->> |net1|
---- ---- ----
Would this solve the problem of the blocked ports on net2 and would I be
able to connect to net1 going thru net3?
Also, I read about ethernet bridging but I'm not sure if it could work
between two tun virtual devices.
Any advice or information welcome.
Regards,
Andrea S. Gozzi
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