[Openswan Users] DNS for VPN

[Paul Wouters]

On Thu, 23 Mar 2006, Christian Brechbühler wrote:

> I set up an openswan VPN server, and it accepts clients running Linux
> (IPsec) and Windows (PPP over L2TP over IPsec).
>
> Wile connected, clients have access to 10.0.0.* machines, but have to use
> numerical addresses.  I'd like to let them use the DNS server
> 10.0.0.52while connected (
> e.g., nameserver.example.com might resolve to 10.0.0.52).
> In Linux I can make it work by sticking "nameserver 10.0.0.52" above the
> nameserver line entered from DHCP.  But that level of manual intervention is
> awkward.  (If VPN is down, every name look up hangs till it times out, about
> 10s, so I have to take it out.)  And I'd like to make DNS available for
> Windows clients too.  I set ms_dns in the ppp configuration file, with no
> success.

It is ms-dns, not ms_dns. And you can also try to add ms-wins to that list.
Make sure that the TCP->DNS settings for the L2TP connection are on "automatic"

Paul