Quote from #dn42: hexa: nobody runs racoon on their free will :).
See also strongswan
The keys are generated with plainrsa-gen.
Usage: plainrsa-gen [options]
-b bits Generate <bits> long RSA key (default=1024)
-e pubexp Public exponent to use (default=0x3)
-f filename Filename to store the key to (default=stdout)
-i filename Input source for format conversion
-h Help
I'd probably go with 4096 bits.
in your racoon.conf:
path certificate "/etc/racoon/keys";
listen {
isakmp 192.168.255.1[500];
}
remote 192.168.255.2 {
exchange_mode main;
certificate_type plain_rsa "local.priv.key";
peers_certfile plain_rsa "remote.pub.key";
proposal {
authentication_method rsasig;
lifetime time 8 hour;
encryption_algorithm aes256;
hash_algorithm sha256;
dh_group modp1024;
}
}