Re: [IPsec] How long does an IKEv1 session take to complete?

2009-11-18 Thread Yoav Nir
What Dan and Gregory said.

But assuming an unloaded gateway, with "normal" hardware (Any Intel, AMD or 
PowerPC processor from the last 10 years or a recent ARM), then even if you use 
relatively secure parameters (2048-bit DH group, 2048-bit RSA keys) the round 
trip time is going to dominate. The calculations themselves take less than 20 
milliseconds.

So phase 1 should take about 3 round trips.

On Nov 18, 2009, at 8:31 AM,   
wrote:

> Greetings. Is there any data out there that quantifies how long a typical 
> IKEv1 session (main mode and/or aggressive mode) take to complete?
> 
> Hyla



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Re: [IPsec] How long does an IKEv1 session take to complete?

2009-11-18 Thread Dan McDonald
On Wed, Nov 18, 2009 at 10:00:22AM -0800, Gregory Lebovitz wrote:
> Additionally it will depend on the round trip time across the network
> between the two peers.

Ahh, of course.

> Vendors who are selling network boxes that can do a large number of
> simultaneous IKE negotiations tend to care more about simultaneous IKE SA
> negotiations per second than they do the actual negotiation time of any one
> single negotiation.

Yes, the throughput vs. latency issues.  A user might care about his/her
latency (0-to-IPsec times), but a server vendor (not just a VPN box, BTW --
imagine the IPsec-protected server) might care a lot more about aggregate
P1s/second.

Dan
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Re: [IPsec] How long does an IKEv1 session take to complete?

2009-11-18 Thread Gregory Lebovitz
Additionally it will depend on the round trip time across the network
between the two peers.

Vendors who are selling network boxes that can do a large number of
simultaneous IKE negotiations tend to care more about simultaneous IKE SA
negotiations per second than they do the actual negotiation time of any one
single negotiation.

HTH,
Gregory.

On Wed, Nov 18, 2009 at 8:27 AM, Dan McDonald  wrote:

> On Tue, Nov 17, 2009 at 11:31:45PM -0700, hyla81...@mypacks.net wrote:
> 
>
> > Greetings. Is there any data out there that quantifies how long a typical
> > IKEv1 session (main mode and/or aggressive mode) take to complete?
>
> I don't think anyone's done a thorough survey of implementations or
> parameters they use.  If anyone has, or knows of such a survey, they should
> really share with this list.
>
> A LOT depends on what you use for your Oakley Group, your authentication
> method (and the certificate key size in the case of certificates), and, of
> course, the hardware upon which you run it.  There's a lot of combinations
> there!
>
> Dan
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-- 

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Gregory M. Lebovitz
Juniper Networks
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Re: [IPsec] How long does an IKEv1 session take to complete?

2009-11-18 Thread Dan McDonald
On Tue, Nov 17, 2009 at 11:31:45PM -0700, hyla81...@mypacks.net wrote:


> Greetings. Is there any data out there that quantifies how long a typical
> IKEv1 session (main mode and/or aggressive mode) take to complete?

I don't think anyone's done a thorough survey of implementations or
parameters they use.  If anyone has, or knows of such a survey, they should
really share with this list.

A LOT depends on what you use for your Oakley Group, your authentication
method (and the certificate key size in the case of certificates), and, of
course, the hardware upon which you run it.  There's a lot of combinations
there!

Dan
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[IPsec] How long does an IKEv1 session take to complete?

2009-11-18 Thread hyla81420
Greetings. Is there any data out there that quantifies how long a typical IKEv1 
session (main mode and/or aggressive mode) take to complete?

Hyla

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