strongswan/testing/tests/ikev1/mode-config/hosts/dave/etc/strongswan.conf

# /etc/strongswan.conf - strongSwan configuration file

pluto {
  load = sha1 sha2 md5 aes des hmac pem pkcs1 x509 gmp random curl resolve
}

# pluto uses optimized DH exponent sizes (RFC 3526)

libstrongswan {
  dh_exponent_ansi_x9_42 = no
}