Re: [Openvpn-users] Config item request

["Aaron P. Martinez" <ml@xxxxxxxxxxxxxx>]

On Tue, 2005-02-01 at 22:11, Bradley Alexander wrote:
> I have a request for the server config file. The "local" directive specifies 
> the interface on which OpenVPN listens. My first concern with this is in the 
> event of a dynamic or semi-dynamic address, for instance, on a DSL or 
> Cablemodem connection. These IP addresses are using DHCP, and while they 
> don't change often, they do change (seldom enough for a hearty WTF? when the 
> tunnel stops working after all that time). Jim, would you consider supporting 
> use of either the IP address or interface name?
> 
> Also, can you specify multiple interfaces/addresses to listen on in that 
> directive? For instance, a on a firewall with four interfaces, one DSL, one 
> Cable, an internal network and a DMZ, could you specify the DSL and cable 
> interface/addresses in separate lines or comma/whitespace separated on the 
> same line?

You have the option of setting local of course, but it is completely
optional.  You would use this more to specify only one ip address as
opposed to all of them.  When you don't use the "local" environment
variable then your machine listens on all interfaces for the incoming
connection on whatever port you specify, and if you choose to leave out
the 'port' variable, 1194 is where it listens.

Using dsl and having your address change on the server means nothing
here. The local machine doesn't need to know where to connect to, it's
the clients that need to know.  Even if you specified eth0 for instance,
a client across the internet will have to know the IP of your dsl or
cable modem to connect, which ovpn has no knowledge of.

> 
> Thanks,

Aaron Martinez


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