On 1/15/2011 5:10 AM, Romain De Rasse wrote:
Hi Kevin,

thanks for your answer. Id did a traceroute and I'm sure that the ping
doesn't enter the tunnel and then comes back in the local lan through
the tunnel.
The wireless adapter of my laptop is desactivated.

I found a solution, but it's not a good one : in order to prevent the
local LAN access, there must be a route with next hop in the tunnel
(that is, an Include Topology Entry) which match more precisely the
local traffic than the directly connected route I can see using the
"route print" dos command.

For example, a client in the 192.168.0.0/24 LAN must have this Topology
Entries (or something like that I tried it at work yesterday I'm not
sure about the details) :

- Type : Include
- Address : 0.0.0.0
- Netmask : 0.0.0.0

AND

- Type : Include
- Address : 192.168.0.0
- Netmask : 255.255.255.0


This is a bad solution for me because the clients will be located in a
lot of different local LAN address plans, and the configurations of the
clients has to be the same in order to perform simple remote automatic
installation. Moreover the users are not administrators, it will cause a
lot of problems if they have to perform this little part of the
configuration.

I should check the source code and try to adapt it :) but I'm running
out of time.


Romain,

That's probably the best your going to be able to do using our client. Most client's that can prevent local LAN access do so by blocking the traffic using a integrated firewall security policy which is provided by the gateway ( ala, Cisco VPN client ). The Shrew Soft client has a firewall of sorts ( has the ability to block traffic, etc ) but it's not sophisticated ( IP v4 only and lacks state tracking ) and is not pushed to the client from a gateway. As a result , you can't install arbitrary block policies but it may be a feature we can add in the future.

You could try adding all RFC 1918 addresses to your list to your policy list to cover the vast majority of client connections, but that's not a perfect solution.

Hope this helps,

-Matthew
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