Re: Constrained Delegation and PAC : Realm crossover

2015-10-22 Thread Rick van Rein
Hi Simo / others, >>> What I'm left wondering is, if the client's KDC knows what delegations >>> are permitted, as is the case with FreeIPA, is it not simpler to pass on >>> the additional tickets for smtp/ and imap/ in an AD structure in the >>> webmail ticket? >> This is a potential

Re: Constrained Delegation and PAC : Realm crossover

2015-10-20 Thread Rick van Rein
Hi Simo, > I guess I need to ask you for a detailed example of a transaction to > understand what you are aiming to. Gladly, thanks :) An example of use I have in mind is a party owning a domain name, based on externally hosted components from online providers, all secured and linked together

Re: Constrained Delegation and PAC : Realm crossover

2015-10-20 Thread Rick van Rein
Hi, > There are 2 different approaches for Constrained Delegation, one where > Access control is applied at the KDC level, and one that relies on the > receiving service to apply access control. > > When using an MS-PAC you have an AD element that tells you whether the > ticket is the result of

Re: Constrained Delegation and PAC : Realm crossover

2015-10-20 Thread Simo Sorce
On 20/10/15 05:03, Rick van Rein wrote: > Hi, > > >> There are 2 different approaches for Constrained Delegation, one where >> Access control is applied at the KDC level, and one that relies on the >> receiving service to apply access control. >> >> When using an MS-PAC you have an AD element that

Re: Constrained Delegation and PAC : Realm crossover

2015-10-20 Thread Rick van Rein
Hi, >> What I'm left wondering is, if the client's KDC knows what delegations >> are permitted, as is the case with FreeIPA, is it not simpler to pass on >> the additional tickets for smtp/ and imap/ in an AD structure in the >> webmail ticket? > > This is a potential optimization I have been

Re: Constrained Delegation and PAC : Realm crossover

2015-10-18 Thread Rick van Rein
Hi Simo / others, Thanks for your reply. I found KILE and PAC from SFU, but am having a hard time figuring out what goes where, and whose responsibilities lie where. That's not really obvious from these specs :-S >> I know that the security is based on a PAC, but it is unclear where it >> is

Re: Constrained Delegation and PAC : Realm crossover

2015-10-18 Thread Simo Sorce
On 18/10/15 04:44, Rick van Rein wrote: > Hi Simo / others, > > Thanks for your reply. I found KILE and PAC from SFU, but am having a > hard time figuring out what goes where, and whose responsibilities lie > where. That's not really obvious from these specs :-S > >>> I know that the security is

Constrained Delegation and PAC : Realm crossover

2015-10-15 Thread Rick van Rein
Hello, Does anyone on this list have S4U2Proxy or "Constrained Delegation" experience? I know that the security is based on a PAC, but it is unclear where it is enforced -- in the benevolent service, or in the KDC. And, if it is the KDC, which one if client and service realms differ? The

Re: Constrained Delegation and PAC : Realm crossover

2015-10-15 Thread Simo Sorce
On 15/10/15 08:00, Rick van Rein wrote: > Hello, > > Does anyone on this list have S4U2Proxy or "Constrained Delegation" > experience? Yes > I know that the security is based on a PAC, but it is unclear where it > is enforced -- in the benevolent service, or in the KDC. Can be either, however