VPN connection routing

[Guest]

Hi all,

Our network is 192.168.1.x/255.255.255.0 and we need to connet to our sister
company in VPN that uses 192.168.1.x/255.255.255.255.
No problems on VPN connection but how can I access that ip? I try to access
their 192.168.1.4 machine but it access our 192.168.1.4 machine.
Is it possible to point to the right machine?
We are using windows VPN connection.

Thanks
Andy

 

[Chris Priede]

Hi,

Our network is 192.168.1.x/255.255.255.0 and we need to connet to our
sister company in VPN that uses 192.168.1.x/255.255.255.255.
Is it possible to point to the right machine?

Unfortunately, no. One of you needs to renumber. How hard that will be
depends on what you have -- it could range from trivial in a simple
peer-to-peer environment, to quite complicated in a full blown enterprise AD
implementation.

My general advice about that is to never choose the popular / router default
private address blocks for your network (192.168.0.0, 192.168.1.0, 10.0.0.0
and so forth), precisely for this reason. Each of the three private address
ranges is wide enough to allow choosing an uncommon block, relatively
unlikely to conflict with home users and other small organizations:

http://www.cse.ohio-state.edu/cgi-bin/rfc/rfc1918.html