Re: [strongSwan] Broken CHILD_SA following IKE_SA re-auth with FortiGate remote

2016-08-29 Thread Tobias Brunner
Hi Tore, > That said, it seems to me that even if we're talking specifically about > reauthentications, strongSwan's default "break before make" > behaviour still violates the standard: > >Reauthentication is done by creating a new IKE SA from scratch (using >IKE_SA_INIT/IKE_AUTH exchange

Re: [strongSwan] Broken CHILD_SA following IKE_SA re-auth with FortiGate remote

2016-08-29 Thread Tore Anderson
Hi again, * Tobias Brunner > > So is strongSwan here intentionally behaving in a non-compliant > > manner simply in order to better interoperate with other > > non-compliant IKEv2 implementations, or is there some other reason > > why "make before break" isn't the default? That is, are there any

[strongSwan] How to define multiple proposals in IKEv1

2016-08-29 Thread Steve Leung
Hello everyone, I'm currently switching from Openswan to Strongswan, and one thing I'm having problem is defining multiple proposals in IKEv1 Main Mode. According to wiki.strongswan.org, both ipsec.conf and swanctl.conf is able to define multiple proposals, by using comma as the separator: For

Re: [strongSwan] Broken CHILD_SA following IKE_SA re-auth with FortiGate remote

2016-08-29 Thread Tobias Brunner
Hi Tore, > There was one thing you mentioned above that gave me some pause though: > > «some heuristics might have to be used to avoid destroying the old SAs > as duplicates» > > Could you elaborate on how this might be a problem? > > If I understand correctly: if make-before-break reauth is be

Re: [strongSwan] How to define multiple proposals in IKEv1

2016-08-29 Thread Tobias Brunner
Hi Steve, > Question 1) Can I define multiple proposals for 'ike' and adding '!' to > restrict Strongswan to accept the defined proposals only? Since the > initiator is not fixed, local Strongswan can be the responder or > initiator depends on different scenario. Yes, adding ! in ipsec.conf will

[strongSwan] Replay window upper limit

2016-08-29 Thread Kapil Adhikesavalu
Hi, What is the upper limit on replay window size ? i didn't find any documentation on upper limit. is it dependent on Hardware, if so how to find the limit After a certain limit, i am having some problem with IPsec connection. *replay_window = -1 | * The IPsec replay window size for this conne