On 2011/09/13 19:09, fredrik danerklint wrote:

I've asked before regarding this but that was for FreeBSD and that has a utility called 'setkey'. OpenBSD does not.

So, how do I do on a OpenBSD machine? Google didn't give an answer to this...

Untested but in theory you can set this via ipsecctl/ipsec.conf, "tcpmd5 from <src> to <dst> spi <number> authkey <keyspec>" (Make up the number for spi yourself).