On Linux it is possible to create an a manual IPSec (no IKE etc) tunnel thus:
spdadd 192.168.0.10/32 192.168.0.11/32 udp -P in ipsec esp/transport//require; add 192.168.0.10 192.168.0.11 esp 2222 -m transport -E des-ede3-cbc "123456789012123456789012" -A hmac-md5 "1234567890123456";
I need to do the same on Windows. I am aware of netsh but I don't think its equivalent, I need to specific the SPI (thats the 2222 above) and this seems impossible.
Any ideas or alternatives?!