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Author Route through a FreeSwan VPN to use a frame relay link to a third location
Marcel Braak

2002-09-11, 4:29 am

Hi There,

I desparetly need some help, to set up the following

Let's say we've got three locations (A,B and C)

A and B are connected to each other by 2 Linux routers and FreeSwan ipsec
VPN
B is connected to C by a Frame Relay link.

I need help on how to manage to let users on location A to reach C
So from A i want to go over the VPN to B and B has to route this traffic
over the Frame Relay Link to C

I can't simply add a route to the VPN server at location A to use the router
of the Frame relay link at B to reach C cause like the FreeSwan FAQ sais the
2 VPN gateways aren't part of the VPN(only traffic that flows trough is VPN
traffic)

so a route add -net (C net address) netmask (C netmask) gw (IP of Frame
Relay link at B) doesn't work cause the VPN server at A can't reach the
network at B directly..

When i add a route directly to freeswan like
ipsec eroute --add --eraf inet --src (A netaddr/msk) --dst (C
netaddr/msk) --said (id of the tunnel between a and b)
then i see that the traffic is on my ipsec interface at A but it never
reaches B

Who can help me out??


Marcel



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