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[Openvpn-users] Re: TLS; a remote client to strict running daemon


  • Subject: [Openvpn-users] Re: TLS; a remote client to strict running daemon
  • From: Morten Christensen <mc@xxxxx>
  • Date: Sat, 07 Feb 2004 14:53:10 +0100

Lumir Unzeitig wrote:
Hi,I have got about 20 virtual interfaces binded to internal interface.
Each of them represents a gateway for a VLAN segment.

I must ensure a remote user (=memeber a specific VLAN) can acces strictly the specific VLAN when connected remotely.

If I used client authentication via shared secret I can pair by this key running daemon on server site with client and set up proper routing.
But I'd like to use TLS. But I need a strict client with its certificate connected to only strict running daemon.


How I understood all clients with valid certificates can connect to any daemon on the gateway (if they know port, address,... and have proper CA certificates, keys,...) if the are not on CRL

Does anybody know how to solve the strict daemon to strict client
(certificate) relationship by using TLS?


(I found 2 options:

1. to create for each daemon CRL file filling with all other certificates
or
2. to create separate CA for each of VLANs

but both are quite complicated :) .)

I do not understand CRL, so I have combined TLS with preshared secrets, where the generated secrets is used by --tls-auth, and every client has its own generated secret.


--
mvh
Morten Christensen


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