[strongSwan] When is DH re-negotiated ?

2011-03-24 Thread Graham Hudspith
All, Hopefully this is a quick answer for someone ? When we set up a tunnel, we have to specify a DH group along with the acceptable encryption and authentication algorithms for the IKE_SA (e.g. aes-sha-modp1024!). Is DH re-negotiated everytime we rekey the IKE_SA ? Also, when we set up a

Re: [strongSwan] When is DH re-negotiated ?

2011-03-24 Thread Martin Willi
In this case, I believe that it is always us (the client) that initiates rekeying. So, by proposing aes-sha1-modp1024,aes-sha1!, you could say that we are giving the SeGW a choice of whether it wants us to perform a DH or non-DH CHILD_SA rekey ? It should work. The client will always