[Swan] NetKey vs KLIPS

[David McCullough]

Lennart Sorensen wrote the following:
> On Thu, Sep 11, 2014 at 01:37:42PM +0100, Lawrence Manning wrote:
> > If I understand correctly, this can be done by having a 0.0.0/0 remote subnet. Do you mean something else?
> 
> It was years ago, so I don't remember exactly why it didn't work with
> klips.

My company and I have been doing default route klips tunnels for 10 years,
its always worked AFAIK.

Cheers,
Davidm

> > Yes, this is a rather a nasty limitation. I *think* (might be wrong) that this is more an integration problem between the startup glue scripts and pluto/klips vs a real klips problem. Ie. you could probably work around this by making your own action mechanism that add/removed the ipsec interfaces without doing a full restart. But great if netkey makes this a non problem.
> 
> Certainly simple with netkey.  Also netkey can use the kernel crypto
> drivers for hardware crypto which I don't think klips can.
> 
> > Yeah, we crank up the limit but it is still hardcoded and not changeable at even module load time AFAIK.
> > 
> > I played with using some of the special netfilter matches for netkey, and I know it can be done… it’s just “weirder”. I believe, for instance, that under ntetkey libpcap will se both the cleartext and the cyphered packets….
> 
> Using shorewall as a wrapper it was a simple as defining an ipv4 zone and
> an ipsec zone for a given interface and then it just works.  Traffic that
> came through netkey is tagged as ipsec traffic.

-- 
David McCullough,  ucdevel at gmail.com,   Ph: 0410 560 763