Re: [Openvpn-users] fixed client's ip

[Mathias Sundman <mathias@xxxxxxxxxx>]

Please reply to the list so other people can benefit from the what's being 
said.

On Sat, 2 Jul 2005, Wlodek Wiszka wrote:

> I've been wondering if this could be done by defining a smallest 
> possible subnet.
>
> 1. why does openvpn need so many ips (at least 6, including server and 
> client)

See http://openvpn.net/faq.html#slash30


> 2. it could be usable to set server's ip as not the 1st in a given 
> subnet - if it is a class c network, it usually conflicts with a 
> gateway's ip. Then one would not need to push routing information to the 
> client.

When using tun mode you usually use a dedicated /24 network for OpenVPN, 
so there is no conflicts with other gateways on this subnet.

When using tap mode there could be a conflict yes, but if you don't use 
the macro directives --server or --server-bridge you can manully chose 
what IP address the server should use with --ifconfig instead.

Cheers / Mathias

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