Re: [IPsec] Fwd: Issue : Regarding EAP identity

2010-02-03 Thread Yoav Nir
Hi Raj I don’t think we can specify MUST requirements for the AAA servers, because we’re not specifying RADIUS or DIAMETER here. For example in RADIUS, the VPN gateway sends an Access-Request to the server, which contains the user-name, presumably the same user-name from the IDi payload. If

[IPsec] Yet another closing session - issues #153-#157

2010-02-03 Thread Yoav Nir
Hi all. 5 more issues. Issue #153 - List of EAP methods 3.16: I suggest to remove the table quoted from the EAP RFC. There are dozens of methods now in the IANA registry, many of which are preferable to the ones mentioned here. I agree, especially since we

Re: [IPsec] Issue #173: Trigger packets should not be required

2010-02-02 Thread Yoav Nir
Me too, but the draft still requires *some* selectors, so the childless draft is still needed. -Original Message- From: ipsec-boun...@ietf.org [mailto:ipsec-boun...@ietf.org] On Behalf Of Raj Singh Sent: Wednesday, February 03, 2010 5:25 AM To: Dan McDonald Cc: IPsecme WG; Paul Hoffman

[IPsec] Five more issues to close in IKEv2bis

2010-02-01 Thread Yoav Nir
Hi all. Yet another batch of issues that we wish to close. Issue #140 - No SPD entry for transport mode Section 2.23.1: If the responder doesn't find SPD entry for transport mode with the modified traffic selectors, and does a lookup with the

Re: [IPsec] Closing issue #143 (rewrite of section 1.5)

2010-01-31 Thread Yoav Nir
the request. The Response bit is set to 1, and the version flags are set in the normal fashion. -Original Message- From: Tero Kivinen [mailto:kivi...@iki.fi] Sent: Thursday, January 28, 2010 4:40 PM To: Yoav Nir Cc: ipsec@ietf.org Subject: [IPsec] Closing issue #143 (rewrite of section 1.5

[IPsec] Closing issue #143 (rewrite of section 1.5)

2010-01-28 Thread Yoav Nir
Hi all. Combining Pasi's proposed text with Tero's comments I came up with this version. Is this acceptable to everyone? Yoav There are couple of cases when a node receives a packet it cannot process, but may want to notify the sender about this situation: o If an ESP or AH packet

[IPsec] Closing Issue #146 - Encapsulation wording

2010-01-28 Thread Yoav Nir
Hi all The offending paragraph is the following; An initiator can use port 4500, regardless whether or not there is NAT, even at the beginning of IKE. When either side is using port 4500, sending with UDP encapsulation is not required, but understanding received packets with UDP

Re: [TLS] Confirming consensus about one

2010-01-26 Thread Yoav Nir
I've stayed out of this discussion so far, because my opinion has already been noted, but since you've changed the subject... On Jan 27, 2010, at 12:50 AM, Kemp, David P. wrote: Yes. I agree that SCSV could be defined to convey only 1 bit of information while RI conveys 2 bits, and agree

Re: [IPsec] Fwd: Internal WG Review: Recharter of IP Security Maintenance and Extensions (ipsecme)

2010-01-26 Thread Yoav Nir
Hasn't this item just been approved by the IESG? Isn't it done? snip/ - A standards-track mechanism that allows an intermediary device, such as a firewall or intrusion detection system, to easily and reliably determine whether an ESP packet is encrypted

Re: [IPsec] Fwd: Internal WG Review: Recharter of IP Security Maintenance and Extensions (ipsecme)

2010-01-26 Thread Yoav Nir
Yes, but the heuristics document is not standards-track. Never mind, I'm not trying to nit-pick our charter proposal. On Jan 26, 2010, at 11:41 PM, Paul Hoffman wrote: At 11:27 PM +0200 1/26/10, Yoav Nir wrote: Hasn't this item just been approved by the IESG? Isn't it done

Re: [IPsec] Issue #157: Illustrate the SA payload with a diagram

2010-01-25 Thread Yoav Nir
On Jan 22, 2010, at 11:57 PM, Yaron Sheffer wrote: The text in 3.3 requires peace of mind to fully appreciate. A diagram might be helpful. Here's a first shot (we'll need to add some descriptive text): SA Payload |

Re: [IPsec] Closing some of the open tickets for IKEv2bis

2010-01-25 Thread Yoav Nir
On Jan 25, 2010, at 1:44 PM, Tero Kivinen wrote: Yoav Nir writes: Issue #141 - Silently deleting the Child SA after a CHILD_SA_NOT_FOUND == Section 2.25: A peer that receives a CHILD_SA_NOT_FOUND notification SHOULD

[lojban-beginners] New version of the jbovlaste-based PDF

2010-01-24 Thread Yoav Nir
Hi all. A new version of the dictionary is posted to http://www.lojban.org/tiki/Books As before, I'm using this platform to request help in two areas: - The last two sections contain missing definitions, either English or lojban. Those of you who have the time, please have a look at those

[IPsec] Closing some of the open tickets for IKEv2bis

2010-01-24 Thread Yoav Nir
Hi all We would like to begin closing IKEv2bis issue at a faster rate than we are opening new ones. Paul has sent the list a several issues. Some we have discussed, others - not so much. Here's a summary of three issues, which I think are ready for closure. Issue #138 - Calculations

Re: [IPsec] Issue #139: Keying material taken in the order for RoHC

2010-01-21 Thread Yoav Nir
I think extensions such as RoHC that change (or extend) the way keying material is generated, should and do specify how it is done. Leaving that text there becomes a recommendation for future draft writers, which I think is superfluous. I think we should leave the text as it is. On Jan 19,

Re: [IPsec] Issue #150: What happens if the peer receives TEMPORARY_FAILURE and does not understand it

2010-01-20 Thread Yoav Nir
We can't really prescribe actions for (presumably older) implementations that don't support this spec. Such implementations will do what it says in RFC 4306 and the clarifications document: TEMPORARY_FAILURE is an error notification, so therefore the exchange failed. In that case the old SA

Re: [IPsec] Issue #153: List of EAP methods

2010-01-20 Thread Yoav Nir
Agree. Certainly types 4-6 have to be removed, as they are just methods, and we RECOMMEND not to use them. I can see some value in mentioning type 1 (Identity), because later in that same section we mention that the responder should not send such requests. I think we should remove all the rest,

Re: [IPsec] Issue #138: Calculations involving Ni/Nr

2010-01-20 Thread Yoav Nir
I agree, and I don't think you need brackets: only the first 64 bits of Ni and the first 64 bits of Nr are used in calculating SKEYSEED, but all the bits are used for input to the prf+ function. (although I personally did not find it confusing) On Jan 19, 2010, at 4:25 AM, Paul Hoffman wrote:

Re: [IPsec] Notify types, was: RE: Review of rest of draft-ietf-ipsecme-ikev2 (section 2.23.1 forward)

2010-01-19 Thread Yoav Nir
+1 Anybody who starts implementing IKEv2 in a few months using the new RFC should not have to care about the history, and which notify type was added at which point, except to know that some implementations in the field may not support these newer notifications. -Original Message-

Re: [IPsec] ikev2bis clarification on port floating

2010-01-12 Thread Yoav Nir
Hi Scott When writing remote access VPN clients (running on phones, PCs, tablets, probably not z/OS) it's usually safe to assume that the peer (a gateway) supports NAT-T. This is because on the real Internet, a RAS that does not support NAT-T simply doesn't work. NATs are everywhere. So it's

Re: [IPsec] Traffic visibility - consensus call

2010-01-06 Thread Yoav Nir
On Jan 7, 2010, at 9:14 AM, Charlie Kaufman wrote: Oh sigh!! What is it about IPsec that makes people go down this same path every time: snip/ IPsec? So I guess you haven't been following the TLS mailing list these past couple of months. I don't think anyone's described a practical

Re: [IPsec] Traffic visibility - consensus call

2010-01-04 Thread Yoav Nir
On Jan 5, 2010, at 12:27 AM, Yaron Sheffer wrote: Hi, We have had a few discusses during the IESG review of the WESP draft. To help resolve them, we would like to reopen the following two questions to WG discussion. Well reasoned answers are certainly appreciated. But plain yes or no

[lojban-beginners] Re: A question about gismu definitions

2009-12-23 Thread Yoav Nir
FWIW you see a lot more prenu than remna. remna is used specifically to denote humans. There is no specific requirement for prenu to be human or sentient. If you're one of those who say cats are people too then you could use prenu for a cat. Suppose you wanted to use legal language. Almost all

Re: [IPsec] Issue #128: Can implementations not reply fully to Deletes?

2009-12-16 Thread Yoav Nir
From: ipsec-boun...@ietf.org [ipsec-boun...@ietf.org] On Behalf Of Yoav Nir [y...@checkpoint.com] Sent: Wednesday, December 16, 2009 12:01 AM To: Paul Hoffman; IPsecme WG Subject: Re: [IPsec] Issue #128: Can implementations not reply fully to Deletes

Re: [IPsec] crypting with aes-xcbc-mac hashing

2009-12-16 Thread Yoav Nir
On Dec 16, 2009, at 6:36 AM, rahul bharadhwaj wrote: Hi all Could anyone let me know which crypt algo des/3des/aes should be used with aes-xcbc-mac hashing. As aes-xcbc-mac uses aes for authentication and integrity, is it correct to apply des for encryption or is there any restriction.

Re: [IPsec] Issue #128: Can implementations not reply fully to Deletes?

2009-12-15 Thread Yoav Nir
Section 1.4.1 also says: A node MAY refuse to accept incoming data on half-closed connections but MUST NOT unilaterally close them and reuse the SPIs. So if your peer is only responding with empty INFORMATIONAL responses to your deletes, you're going to accumulate more and more stale inbound

Re: [IPsec] Proposed work item: Childless IKE SA

2009-12-09 Thread Yoav Nir
Hi Alper. The Do phase 1 first, and phase 2 as traffic demands it motivation is from the remote access VPN domain (though may be useful for others). The Do only phase 1, because we don't need encryption and MAC, just peer authentication motivation is from the 3GPP (though it could be useful

Re: [TLS] Last Call: draft-ietf-tls-renegotiation (Transport Layer Security (TLS) Renegotiation Indication Extension) to Proposed Standard

2009-12-02 Thread Yoav Nir
On Dec 2, 2009, at 9:04 AM, Chris Newman wrote: This the most time-sensitive and security-critical IETF draft with respect to impact on the Internet community that I have seen in 17 years of IETF participation. This is the part I disagree with. New extensions to protocols will take

Re: [TLS] Last Call: draft-ietf-tls-renegotiation (Transport Layer Security (TLS) Renegotiation Indication Extension) to Proposed Standard

2009-12-01 Thread Yoav Nir
On Nov 30, 2009, at 5:37 PM, The IESG wrote: The IESG has received a request from the Transport Layer Security WG (tls) to consider the following document: - 'Transport Layer Security (TLS) Renegotiation Indication Extension ' draft-ietf-tls-renegotiation-01.txt as a Proposed Standard

Re: [IPsec] Proposed work item: Childless IKE SA

2009-12-01 Thread Yoav Nir
There were several motivations listed for childless IKE SAs. - remote access, where you create an IKE SA when the user wants to connect, and only create child SAs in response to traffic - authentication only over a physically secure network (not necessarily EAP, but I think this is the use

Re: [IPsec] #117: Hash and URL interop

2009-11-25 Thread Yoav Nir
+1 Even things that seem obvious like https and ftp require a lot of considerations, like how to verify the certificate in https, or what identity to present in ftp. If someone wants to specify additional URL methods, they can specify then in an I-D. On Nov 24, 2009, at 8:24 PM, Paul Hoffman

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

Re: [IPsec] RFC4869 bis submitted

2009-11-13 Thread Yoav Nir
in the same list as VPN-A and VPN-B. From: Paul Hoffman [paul.hoff...@vpnc.org] Sent: Friday, November 13, 2009 02:58 To: Yoav Nir; Law, Laurie; ipsec@ietf.org Subject: Re: [IPsec] RFC4869 bis submitted At 10:07 PM +0200 11/11/09, Yoav Nir wrote

Re: [IPsec] Clarification on identities involved in IKEv2EAPauthentication

2009-11-12 Thread Yoav Nir
On Nov 12, 2009, at 5:34 AM, Raj Singh wrote: The selection of AAA server will be based on IDi then EAP will happen. The gateway will get EAP authenticated ID from the AAA server. If EAP identity is different from IDi and no policy is found for EAP identity. The gateway should initiate

Re: [IPsec] Clarification on identities involved in IKEv2EAPauthentication

2009-11-11 Thread Yoav Nir
and later in the EAP session. On Nov 11, 2009, at 4:05 PM, Srinivasu S R S Dhulipala (srinid) wrote: Hi Yoav, Thanks for the quick response. Please see inline. -Original Message- From: Yoav Nir [mailto:y...@checkpoint.com] Sent: Wednesday, November 11, 2009 7:23 PM To: Srinivasu S R S

Re: [IPsec] Difference between IPv4 and IPv6 IPsec

2009-10-11 Thread Yoav Nir
Hi Hui I think there is very little difference between IPv4 and IPv6 as regards to IPsec. See below On Oct 11, 2009, at 9:50 AM, Hui Deng wrote: Dear IPsec forks, May I get advice about the differnce between them: 1) IPv4 doesn't mandate the support IPsec, IPv6 also doesn't mandate it

Re: [IPsec] WESP #109 - WESP header alignment for IPv6

2009-09-25 Thread Yoav Nir
On Sep 24, 2009, at 9:44 PM, Paul Hoffman wrote: At 12:13 PM -0600 9/24/09, Grewal, Ken wrote: Proposed change 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

Re: [IPsec] WG last call: draft-ietf-ipsecme-esp-null-heuristics-01

2009-09-22 Thread Yoav Nir
I support advancing this document, and I think the explanations and pseudo code are good. I do, however, question the value of it in real life. Security policies or the deep inspection kind usually are something like: - allow HTTP and HTTPS, and verify headers - allow ICMP and DNS -

[IPsec] Fwd: I-D Action:draft-nir-ipsecme-ipsecha-00.txt

2009-09-21 Thread Yoav Nir
Hi all The draft linked below is a problem statement draft about using IKEIPsec implementations in high availability and load sharing configurations. I will describe this at tomorrows Interim meeting. Comments are welcome, of course, both on the list and at tomorrow's session. Yoav A

[lojban-beginners] Re: The solar system

2009-09-18 Thread Yoav Nir
On Fri, Sep 18, 2009 at 9:38 AM, Ross Ogilvie oges...@gmail.com wrote: coi rodo, I've been looking around the lojban wiki and I was wondering a few things. The Solar System (http://jbo.wikipedia.org/w/index.php?title=solri_ciste) in particular strikes me as poor word-for-word translated

Re: [IPsec] Populating ID_DER_ASN1_DN

2009-09-17 Thread Yoav Nir
On Sep 17, 2009, at 5:33 AM, David Wierbowski wrote: Section 3.1.5 of RFC 4945 states that when generating an ID type of ID_DER_ASN1_DN that implementations MUST populate the contents of ID with the Subject field from the end-entity certificate, and MUST do so such that a binary

Re: [IPsec] Populating ID_DER_ASN1_DN

2009-09-17 Thread Yoav Nir
Wierbowski z/OS Comm Server Developer Phone: Tie line: 620-4055 External: 607-429-4055 graycol.gifYoav Nir ---09/17/2009 02:50:34 AM---On Sep 17, 2009, at 5:33 AM, David Wierbowski wrote: Section 3.1.5 of RFC 4945 states that when ge ecblank.gif From: ecblank.gif Yoav Nir y

Re: [IPsec] Issue #26: Missing treatment of error cases

2009-09-14 Thread Yoav Nir
OK. One more try: 2.21. Error Handling There are many kinds of errors that can occur during IKE processing. If a request is received that is badly formatted, or unacceptable for reasons of policy (e.g., no matching cryptographic algorithms), the response MUST contain a Notify

Re: [IPsec] Issue #26: Missing treatment of error cases

2009-09-07 Thread Yoav Nir
On Sep 7, 2009, at 3:48 PM, Tero Kivinen wrote: Keith Welter writes: I would not expect INVALID_SYNTAX to cause the IKE SA to be deleted either. I do consider INVALID_SYNTAX fatal error, meaning the IKE SA will be deleted immediately after sending that response containing INVALID_SYNTAX

Re: [IPsec] Issue #26: Missing treatment of error cases

2009-09-06 Thread Yoav Nir
OK. Let's try this again. Is this acceptable? 2.21. Error Handling There are many kinds of errors that can occur during IKE processing. If a request is received that is badly formatted, or unacceptable for reasons of policy (e.g., no matching cryptographic algorithms), the

[lojban-beginners] Re: don't you have somewhere to be?

2009-09-04 Thread Yoav Nir
We should be able to preserve the tone and sarcasm through rhetorical questions paunai xu do bilga lenu cliva paunai xu do bilga lenu klama le datselzva On Fri, Sep 4, 2009 at 5:03 PM, tijlan jbotij...@gmail.com wrote: Though i'm not a native English speaker, it seems to me that don't you have

Re: [IPsec] Fw: Issue #26: Missing treatment of error cases

2009-09-04 Thread Yoav Nir
Then I should have explained better. If an initiator sees an error in the response, the exchange is already over, so the only way it can notify the responder of the error, is to create a new INFORMATIONAL exchange with an error notification. All the text here discusses the one INFORMATIONAL

Re: [IPsec] Ikev2 HA message Id Issue

2009-09-03 Thread Yoav Nir
Hi Kalyani Of the two, I prefer the 2nd solution, as it is simpler. Reusing message IDs is not that bad, and you can decrease the change by including (in the RESET_MESSAGE_ID notification) a random number as the starting message ID. What I'm not so sure, is that there is a real problem here

Re: [IPsec] Issue #26: Missing treatment of error cases

2009-09-03 Thread Yoav Nir
Yes, I will soften the language a bit, but I won't mention a DELETE payload. If some implementations do it. others may come to expect it. We don't want to encourage that by suggesting that it's a good idea. On Sep 3, 2009, at 11:52 PM, Keith Welter wrote: If the error occurs on the

[lojban-beginners] A new version of the lojban dictionary

2009-09-02 Thread Yoav Nir
coi rodo The 6th edition of the jbovlaste-based dictionary (in PDF) is available from http://www.lojban.org/tiki/books Nothing new as far as features go, but the size has increased to 323 pages. I guess a lot of new stuff is being added to jbovlaste. Still looking for ideas/volunteers for some

[lojban-beginners] Re: A new version of the lojban dictionary

2009-09-02 Thread Yoav Nir
: hmmm, in the cheat sheet section, wouldn't {ma'a} have all three people circled in yellow? On Wed, Sep 2, 2009 at 11:18 AM, Yoav Nir yoav@gmail.com wrote: coi rodo The 6th edition of the jbovlaste-based dictionary (in PDF) is available from http://www.lojban.org/tiki/books Nothing new

[IPsec] Issue #26: Missing treatment of error cases

2009-09-01 Thread Yoav Nir
Hello all. Issue #26 was submitted by Tero Kivinen. It concerns section 2.21 (error handling) and states that several things are missing: - handling of errors before authentication - listing what error conditions cause the IKE SA to be deleted entirely - listing how errors are handled in the

Re: [IPsec] Issue #26: Missing treatment of error cases

2009-09-01 Thread Yoav Nir
On Sep 1, 2009, at 5:07 PM, Tero Kivinen wrote: Yoav Nir writes: Following is our suggested new text. Please let us know what you think. Also, please take a look at the description of AUTHENTICATION_FAILED in section 3.10.1. response to an IKE_AUTH message means either an IKE_AUTH response

Re: [IPsec] #79: Remove CP from Create_Child_SA?

2009-08-27 Thread Yoav Nir
I disagree. Payloads in a particular CREATE_CHILD_SA exchange should be specifically related to the SA being created. The IKE_AUTH exchange is different, because it is used to set up everything we need to get an IPsec SA going. We do not use the CREATE_CHILD_SA to delete old SAs, to query

Re: [IPsec] Can off-path attackers trigger DPD ([FWD: Re: [btns] Q: How to deal with connection latch breaks?])

2009-08-13 Thread Yoav Nir
Any INVALID_IKE_SPI or INVALID_SPI message can trigger DPD (or, as RFC 4306 calls it, liveness check). These messages are very easy to spoof. But liveness check is just one round trip between the peers and it's supposed to be rate-limited. I don't think an off-path attacker can cause the

Re: [IPsec] Handling Redirect Loops

2009-07-30 Thread Yoav Nir
Vijar Devarapalli wrote: Hi Yoav, On 7/29/09 9:13 PM, Yoav Nir wrote: Hi Vijay. default is usually associated with a particular implementation or product. I think it would be better to say suggested value rather than default value. default value is the right terminology to use here

Re: [IPsec] [IKEv2] Questions on windowing in IKEv2

2009-07-22 Thread Yoav Nir
to discard #17. If it was still valid for the initiator to send request #17 again, the responder would have to retain all the old responses indefinitely. From: Amjad Inamdar (amjads) [mailto:amj...@cisco.com] Sent: Wednesday, July 22, 2009 12:23 PM To: Yoav Nir; Raj

Re: [IPsec] FW: I-D Action:draft-nir-ipsecme-childless-00.txt

2009-07-08 Thread Yoav Nir
solvable, because the policies actually conflict. From: Gaurav Poothia [mailto:gpoot...@microsoft.com] Sent: Thursday, July 09, 2009 7:57 AM To: Yoav Nir; 'Raghunandan P (raghup)'; Raj Singh Cc: ipsec@ietf.org Subject: RE: [IPsec] FW: I-D Action:draft-nir-ipsecme

Re: [IPsec] WG Last Call: draft-ietf-ipsecme-traffic-visibility-05

2009-07-07 Thread Yoav Nir
I've read it again, and it seems fine. One minor issue, though. Section 2 describes the WESP header format. It has the following: HdrLen, 8 bits: Offset to the beginning of the Payload Data in octets. The receiver MUST ensure that this field matches with the header offset computed

Re: [IPsec] FW: I-D Action:draft-nir-ipsecme-childless-00.txt

2009-07-07 Thread Yoav Nir
. Maybe when we make version 2.1 of IKE, we can add a critical type bit to the notification payload. From: Raj Singh [mailto:rsjen...@gmail.com] Sent: Wednesday, July 08, 2009 7:18 AM To: Tero Kivinen Cc: Yaron Sheffer; ipsec@ietf.org; Yoav Nir Subject: Re: [IPsec] FW

Re: [IPsec] FW: I-D Action:draft-nir-ipsecme-childless-00.txt

2009-07-06 Thread Yoav Nir
, 2009 1:43 PM To: Yoav Nir; Raj Singh Cc: ipsec@ietf.org Subject: RE: [IPsec] FW: I-D Action:draft-nir-ipsecme-childless-00.txt Hi Yoav/Raj, I think its a good idea for the initiator to announce its capabilities about supporting just IKE SA without child SA. The responder will then act

Re: [IPsec] WG Last Call for IPv6 Configuration in IKEv2

2009-06-24 Thread Yoav Nir
Hi. IMO the CFG payloads are the last place where there will ever be a shortage of IPv4 addresses. The addresses distributed through CFG payloads in IKEv2 or through extensions to IKEv1 are almost always non-routable addresses, and even for extremely large organizations, there are plenty of

Re: [IPsec] WG Last Call: draft-ietf-ipsecme-ikev2-resumption-04.txt

2009-06-17 Thread Yoav Nir
I agree with Yaron that it should be the way it is now described in the draft. If either side deleted the IKE SA, then it should not come back to life through session resumption. Specifically, the client should not get reconnected without authentication. The laptop example is excellent. If I

[lojban-beginners] Re: shidgerrrrrkari

2009-06-16 Thread Yoav Nir
Interesting, because I can't pronounce it syllabic. It comes out like shi-djer-ka-ri On Tue, Jun 16, 2009 at 6:44 PM, Pierre Abbat p...@phma.optus.nu wrote: On Tuesday 16 June 2009 09:30:24 tijlan wrote: In LFB 12, the r-hyphen in cidjrkari is claimed to be a syllable on its own, and the

Re: [IPsec] WG Last Call: draft-ietf-ipsecme-ikev2-resumption-04.txt

2009-06-01 Thread Yoav Nir
I'm not so sure about that. The authentication in the IKE_AUTH exchange that follows the resumption only proves that the (new) responder can decipher the ticket (or has access to the ticket database). Presumably a cluster of gateways backing each other up would have the same IDr, but if

[IPsec] FW: New Version Notification for draft-nir-ike-nochild-01

2009-05-31 Thread Yoav Nir
- From: IETF I-D Submission Tool [mailto:idsubmiss...@ietf.org] Sent: Sunday, May 31, 2009 6:03 PM To: Yoav Nir Subject: New Version Notification for draft-nir-ike-nochild-01 A new version of I-D, draft-nir-ike-nochild-01.txt has been successfuly submitted by Yoav Nir and posted to the IETF

[IPsec] Some comments about redirect

2009-05-27 Thread Yoav Nir
Hi. I've read through the draft again, and here are a few comments: Section 3 has the following line: If the IKE_SA_INIT request did not include the REDIRECT_SUPPORTED payload, the responder MUST NOT send the REDIRECT payload to the

Re: [IPsec] Some comments about redirect

2009-05-27 Thread Yoav Nir
be ASCII or UTF-8. From: Tero Kivinen [kivi...@iki.fi] Sent: Wednesday, May 27, 2009 13:02 To: Yoav Nir Cc: ipsec@ietf.org Subject: [IPsec] Some comments about redirect Yoav Nir writes: Section 10 sets up an IANA registry for identity types. Couldn't we just

Re: [IPsec] Some comments about redirect

2009-05-27 Thread Yoav Nir
in the GUI. In any case, the client is as aware of the names as the gateways. From: Vijay Devarapalli [vi...@wichorus.com] Sent: Thursday, May 28, 2009 01:04 To: Yoav Nir; Tero Kivinen Cc: ipsec@ietf.org Subject: Re: [IPsec] Some comments about redirect Hi Yoav

Re: [IPsec] Some comments about redirect

2009-05-27 Thread Yoav Nir
...@wichorus.com] Sent: Thursday, May 28, 2009 01:02 To: Yoav Nir; ipsec@ietf.org Subject: Re: [IPsec] Some comments about redirect Hello, On 5/27/09 12:36 AM, Yoav Nir wrote: Hi. I've read through the draft again, and here are a few comments: Section 3 has the following line

Re: [IPsec] RFC 4869 questions

2009-05-14 Thread Yoav Nir
Paul Hoffman wrote: IOW it's up to the initiator whether or not to do PFS, and both configurations are OK to use the suite name. That was my intention in RFC 4308; I cannot speak for the authors of RFC 4869. You can't speak for them, but Scott has to figure it out. As for lifetimes,

Re: [IPsec] IV in ESP packets for DES and 3DES methods

2009-05-12 Thread Yoav Nir
WARNING: contains banned part ---BeginMessage--- On Tue, 2009-05-12 at 10:05 +, ss murthy nittala wrote: Hi Thanks for the clarifications regarding IV usage for AES methods. RFC 2405 (DES) in its implementation note says Common practice is to use random data for the first IV and the

Re: [IPsec] Issue #107

2009-05-11 Thread Yoav Nir
Paul Hoffman wrote: At 12:53 AM +0300 5/11/09, Yoav Nir wrote: Paul Hoffman wrote: At 2:08 PM +0300 5/10/09, Yoav Nir wrote: Hi all I've submitted issue #107 about certificate encoding. IMO it's not clear how certificate chains are to be encoded in IKEv2. http

Re: [IPsec] Issue #107

2009-05-11 Thread Yoav Nir
Pasi.Eronen wrote: Yoav Nir wrote: You can: a) start using hash-and-url b) hope your peer has the sub-CA c) write an extension to 4306 that allows bundles in CERT Doing (a) is the most interoperable, but you're probably save with (b) in a typical closed network

[IPsec] Issue #107

2009-05-10 Thread Yoav Nir
Hi all I've submitted issue #107 about certificate encoding. IMO it's not clear how certificate chains are to be encoded in IKEv2. http://trac.tools.ietf.org/wg/ipsecme/trac/ticket/107 Yoav Email secured by Check Point ___ IPsec mailing list

Re: [IPsec] [IKEv2] IKE_AUTH without TSi, TSr

2009-05-06 Thread Yoav Nir
Michael Richardson wrote: Yoav Nir wrote: Hi Raj Matt is correct. There is no way in IKEv2 to do a phase1-only exchange, and then wait for traffic to establish the child SAs. While we do establish an IKE SA if the piggy-backed child SA failed for whatever reason (bad selectors

Re: [IPsec] Issue #90: Shorter WESP negotiation

2009-05-02 Thread Yoav Nir
Grewal, Ken wrote: Issue #90: shorter WESP negotiation In the current traffic visibility draft, we indicate that WESP can be negotiated via IKEv2 using a new protocol identifier. Charlie Kaufman suggested that it may be plausible to use a notification method along the lines of

Re: [IPsec] Issue #37: UNSUPPORTED_CRITICAL_ERROR during initial IKE_INIT

2009-04-30 Thread Yoav Nir
I don't think we should really prohibit such extensions and enhancements. It's just that IKE will fail if you try it with a peer that does not support it. As far as the end-user is concerned, this is not different from an UNSUPPORTED_CRITICAL_PAYLOAD in IKE_AUTH. Either way, the tunnel setup

Re: [IPsec] WG Last Call: draft-ietf-ipsecme-ikev2-redirect-08

2009-04-21 Thread Yoav Nir
So are we working with the assumption that the gateway (or the AAA server) can always authenticate any user that connects? -Original Message- From: Yaron Sheffer Sent: Monday, April 20, 2009 10:43 AM To: Yoav Nir; Vijay Devarapalli Cc: IPsecme WG Subject: RE: [IPsec] WG Last Call

Re: [IPsec] WG Last Call: draft-ietf-ipsecme-ikev2-redirect-08

2009-04-18 Thread Yoav Nir
Vijay Devarapalli wrote: Hello, Yoav Nir wrote: I see that in section 6 the following: In such cases, the gateway should send the REDIRECT notification payload in the final IKE_AUTH response message that carries the AUTH payload and the traffic selectors. The gateway MUST

Re: [IPsec] Issue #98: 1 or two round trips for resumption

2009-04-12 Thread Yoav Nir
I prefer the second proposal. I would rather have one (even if longer) variation of the protocol over two variations (even if one is shorter) With such a possible attack published, auditors are going to force large installations to use the safer (and longer) version anyway, as it is up to the

Re: [IPsec] IKEv2: Question on INFORMATIONAL exchange response motivation

2009-04-07 Thread Yoav Nir
Hi Matt Requests and responses have matching MsgID numbers. The requestor can instantly identify the response by its matching Msg ID number. INFORMATIONAL exchanges have message authentication codes applied to messages, so the ID numbers can't (or shouldn't) get messed up on the responsder.

Re: [IPsec] Issue #2: Where does N(SET_WINDOW_SIZE) go?

2009-04-02 Thread Yoav Nir
Definitely From: ipsec-boun...@ietf.org [mailto:ipsec-boun...@ietf.org] On Behalf Of Scott C Moonen Sent: Thursday, April 02, 2009 3:48 PM To: Yaron Sheffer Cc: IPsecme WG Subject: Re: [IPsec] Issue #2: Where does N(SET_WINDOW_SIZE) go? From Appendix C: The

Re: [IPsec] Issue #2: Where does N(SET_WINDOW_SIZE) go?

2009-04-02 Thread Yoav Nir
some properties of that as-yet-non-existant IKE SA seems premature to me. I think it should be in all but the IKE_SA_INIT exchange (and also not in unprotected informational) From: ipsec-boun...@ietf.org [mailto:ipsec-boun...@ietf.org] On Behalf Of Yoav Nir Sent

Re: [IPsec] is there any proposed solution to solve the anti-replay problem for IPsec pkts when subject to QOS classification

2009-03-25 Thread Yoav Nir
RFC 4306 specifically requires implementations to support multiple parallel child SAs. If you use a different SA for each QoS class, you should not have problems with the replay window From: ipsec-boun...@ietf.org [mailto:ipsec-boun...@ietf.org] On Behalf Of

[lojban-beginners] Dictionary version 4

2009-02-27 Thread Yoav Nir
Hi all I've just posted version 4 of my (nicer) PDF rendering of jbovlaste Still looking for people to draw more cheat sheet pages and for sites to host it files.me.com/yoavetali/mxc8u2

Re: [IPsec] draft-kivinen-ipsecme-esp-null-heuristics comments

2009-02-10 Thread Yoav Nir
gabriel montenegro wrote: I'll just comment on one item below: As the draft says this is mostly meant for stateful devices, and that has been the main goal for the document. The charter says: A standards-track mechanism that allows an intermediary device, such as a firewall or intrusion

Re: [IPsec] Feedback on the interim session's format

2009-02-05 Thread Yoav Nir
Tero Kivinen wrote: Can we live with push-to-talk? Push-to-talk works well for normal discussion, but it was impossible to use when giving presentation, which meant that I myself changed the setting to voice activated microphone when I started my presentation, and then changed back to

[lojban-beginners] jbovlaste-based dictionary, 2nd edition

2008-11-30 Thread Yoav Nir
coi rodo I have just created the 2nd edition of my jbovlaste-based dictionary (linked below) Some additions in this edition - updated database - analysis of lujvo (works almost every time) - hyperlinks from lujvo analysis and from links in the text - error list: lojban words that

[lojban-beginners] Re: jbovlaste-based dictionary, 2nd edition

2008-11-30 Thread Yoav Nir
Explorer 7? It's a PDF file. You can read it in Acrobat Reader or Preview (on a Mac) On Mon, Dec 1, 2008 at 12:25 AM, Yoav Nir [EMAIL PROTECTED] wrote: coi rodo I have just created the 2nd edition of my jbovlaste-based dictionary (linked below) Some additions in this edition - updated

[lojban-beginners] Re: A priest, a rabbi and an Indian chief walk into a bar...

2008-11-12 Thread Yoav Nir
On Wed, Nov 12, 2008 at 2:31 AM, Jorge Llambías [EMAIL PROTECTED]wrote: On Tue, Nov 11, 2008 at 8:30 PM, Yoav Nir [EMAIL PROTECTED] wrote: I searched jbovlaste and could not find an Indian Chief, or even an American Indian or native american. I could make up a big tanru with leader

[lojban-beginners] A priest, a rabbi and an Indian chief walk into a bar...

2008-11-11 Thread Yoav Nir
Attempting to translate a joke like this gave me some thought. The sentence is kind of easy --- klama lo barja or --- klama mo'ine'i lo barja The hard part is the participants. I searched jbovlaste and could not find an Indian Chief, or even an American Indian or native american. I could

[lojban-beginners] Question about lujvo

2008-11-03 Thread Yoav Nir
coi rodo Is there an algorithm to analyzing lujvo? I would like the input to be a single lujvo and the output to be a sequence of the appropriate gismu and cmavo. Is that described anywhere on lojban.org or the CLL? mi'e ioav

[lojban-beginners] Re: New jbovlaste-based dictionary

2008-10-27 Thread Yoav Nir
So I guess, not much interest... Oh well, it's a fun project. On Fri, Oct 24, 2008 at 10:28 PM, Yoav Nir [EMAIL PROTECTED] wrote: coi rodo For a while now, I've had some problems trying to get an English-lojban dictionary from jbovlaste. Even when I managed to get one, I found searching

[lojban-beginners] Re: New jbovlaste-based dictionary

2008-10-27 Thread Yoav Nir
, 2008 at 4:00 PM, Luke Bergen [EMAIL PROTECTED] wrote: It would be more useful for me if it were in a flat text file instead of a pdf. If something like that were possible that would be great. Also, about how large is this distribution list? On Mon, Oct 27, 2008 at 7:39 AM, Yoav Nir [EMAIL

[lojban-beginners] New jbovlaste-based dictionary

2008-10-24 Thread Yoav Nir
coi rodo For a while now, I've had some problems trying to get an English-lojban dictionary from jbovlaste. Even when I managed to get one, I found searching it to be a pain. So I downloaded the XML file, and re-formatted it to the format expected by OpenOffice. I then opened the file in OO, and

[lojban-beginners] Re: User interfacing in Lojban..

2008-10-06 Thread Yoav Nir
On Mon, Oct 6, 2008 at 11:35 PM, H. Felton [EMAIL PROTECTED] wrote: H. Felton wrote: So, sisku _can_ mean ko sisku? In general (if I understand correctly), any part of Lojban speech can be omitted when grammatically unambiguous. In this case, the context (application command) makes

Re: [Emu] EMU charter revision

2008-04-29 Thread Yoav Nir
like EAP-GTC? Cheers, Joe -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Yoav Nir Sent: Monday, April 28, 2008 5:13 AM To: emu@ietf.org Subject: Re: [Emu] EMU charter revision Gene Chang said: Dan, I am not sure I am able

[lojban-beginners] Re: Nth root of unity

2008-02-18 Thread Yoav Nir
On Feb 18, 2008, at 3:28 AM, Pierre Abbat wrote: On Sunday 17 February 2008 15:43, David Cortesi wrote: per jbovlaste, complex number is {lujna'u} i.e. {pluja namcu}, a complicated type of number -- not pleasing to me, since it is more a two-dimensional number than one that is {pluja}.

[lojban-beginners] Re: Ask for translation: very erotic very violence

2008-01-26 Thread Yoav Nir
You might want to tell us first what this phrase means. It's always better to translate the meaning, rather than a word-for-word translation. On Jan 26, 2008, at 11:53 AM, Earth Engine wrote: Hi all, I am from Chinese. In these days, a short phase is becoming very popular: very erotic

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