Re: [dtn-security] Encrypted IP headers
"Graham Keellings (Leonix Solutions Pte Ltd)" <Graham@LeonixSolutions.com> Wed, 15 July 2009 03:05 UTC
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Date: Wed, 15 Jul 2009 11:03:31 +0800
From: "Graham Keellings (Leonix Solutions Pte Ltd)" <Graham@LeonixSolutions.com>
Organization: Leonix Solutions Pte Ltd
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To: Peter Lovell <plovell@mac.com>
References: <89E48AE60E64EF4E8EB32B0B7EC74920A1B0F5@EVS-EC1-NODE2.surrey.ac.uk> <023601c9df2a$694fd5b0$3bef8110$@com> <4A2DF7FD.5020104@LeonixSolutions.com> <3A5AA67A8B120B48825BFFCF5443856137E3553C4B@NDJSSCC03.ndc.nasa.gov> <"029d01c 9e925$1e354880$5a9fd980$"@com> <4A46C257.3040006@LeonixSolutions.com> <"2009062 8050243.1566215671"@smtp.mac.com> <4A46FBB2.3080205@LeonixSolutions.com> <"2009 0628052255.640550503"@smtp.mac.com> <4A470CD7.4010502@LeonixSolutions.com> <"20 090628141313.1532044204"@smtp.mac.com> <4A4878A6.7010707@LeonixSolutions.com> <20090629123400.1726285002@smtp.mac.com> <C304DB494AC0C04C87C6A6E2FF5603DB2217B29183@NDJSSCC01.ndc.nasa.gov> <4A497B04.3070909@LeonixSolutions.com> <20090630122842.1049441707@smtp.mac.com> <4A556063.2010305@LeonixSolutions.com> <20090709041417.302976474@smtp.mac.com> <4A56E1CA.7080000@LeonixSolutions.com> <20090710120958.2016629300@smtp.mac.com> <4A5AA83C.7030400@LeonixSolutions.com> <20090713134603.958934311@smtp.mac.com>
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Subject: Re: [dtn-security] Encrypted IP headers
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Peter Lovell wrote: > On Mon, Jul 13, 2009, Graham Keellings (Leonix Solutions Pte Ltd) > <Graham@LeonixSolutions.com> wrote: > > >> What about this then - is it even feasible? If I know that I have a >> closed universe of nodes, can I encrypt the IP headers? That might help >> prevent DOS by repeated pinging. <snip> >> >> Am I on a totally wrong track here? Or could encrypted IP headers be one >> more layer of armour? >> >> > > I guess this could work for an isolated system, but those are of limited > interest. of limited interest ... or extremely secure ;-) > Most systems have some interaction with the outside even > though the community may be a closed one. > Many military, navy, government, financial systems have a hard requirement that they do not communicate with the internet (or even with anything that does). In my case, I can live with that. What if you effectively have two devices in one? Say you do your IP header en/de-cryption at driver level? Encrypt wifi and not BlueTooth? In my case, I can also live with that. > When faced with a DOS attack, the challenge is to get rid of as many > packets as possible with the absolute least effort. the question is -- > would encrypting the IP headers help or hinder this ?? > An excellent point and a very good question (drat!). Let me think it through. At first glance, it seems to add more processing, especially at a time-critical low-level. You _might_ save time at higher levels by doing so, but the bottle-neck is at the interrupt-handlers/drivers, trying to triage the IP packets at the earliest opportunity. I have seen devices do this - they are effectively routers. To answer that question, I guess I would have to "suck it and see" - code it up and profile it. Unless anyone else has experience, or even a gut feeling? Thanks, as always, Peter, for the provocation to thought. > Regards.....Peter > > > -- Technical Director Leonix Solutions (Pte) Ltd 18 Boon Lay Way #09-95 TradeHub 21 Singapore 609966 Telephone:+65 6316 9968 Fax: +65 6316 9208
- [dtn-security] Re(2): [dtn-interest] Bundle Secur… Peter Lovell
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- Re: [dtn-security] Newbie seeking some security r… Armando Caro
- Re: [dtn-security] Newbie seeking some security r… Ivancic, William D. (GRC-RHN0)
- Re: [dtn-security] Newbie seeking some security r… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Newbie seeking some security r… Jason Redi
- Re: [dtn-security] Newbie seeking some security r… Armando Caro
- Re: [dtn-security] Newbie seeking some security r… Kristian Erik Hermansen
- Re: [dtn-security] Newbie seeking some security r… Ivancic, William D. (GRC-RHN0)
- Re: [dtn-security] Newbie seeking some security r… Stephen Farrell
- Re: [dtn-security] Newbie seeking some security r… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Newbie seeking some security r… Kristian Erik Hermansen
- [dtn-security] Newbie seeking some security relat… Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(many): Is there a "secure" refe… Peter Lovell
- Re: [dtn-security] Re(2): Re(2): Is there a "secu… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Is there a "secure" reference … Peter Lovell
- [dtn-security] Re(2): Re(2): Re(2): Is there a "s… Peter Lovell
- [dtn-security] Re(2): Re(2): Is there a "secure" … Peter Lovell
- Re: [dtn-security] Re(2): Is there a "secure" ref… Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Is there a "secure" referen… Peter Lovell
- Re: [dtn-security] Is there a "secure" reference … Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Is there a "secure" referen… Peter Lovell
- Re: [dtn-security] Is there a "secure" reference … Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Is there a "secure" reference impl… Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Newbie seeking some securit… Peter Lovell
- Re: [dtn-security] Newbie seeking some security r… Jason Redi
- Re: [dtn-security] Newbie seeking some security r… Stephen Farrell
- Re: [dtn-security] Newbie seeking some security r… Ivancic, William D. (GRC-RHN0)
- Re: [dtn-security] Newbie seeking some security r… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Encrypted IP headers Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Encrypted IP headers Peter Lovell
- Re: [dtn-security] Encrypted IP headers Graham Keellings (Leonix Solutions Pte Ltd)
- [dtn-security] Re(2): Re(2): How do you feel abou… Peter Lovell
- Re: [dtn-security] Re(2): How do you feel about B… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Re(2): Re(2): Re(2): Is there … Ivancic, William D. (GRC-RHN0)
- [dtn-security] Re(2): Re(2): Re(2): Is there a "s… Peter Lovell
- [dtn-security] Re(2): How do you feel about Bonjo… Peter Lovell
- Re: [dtn-security] How do you feel about Bonjour/… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] How do you feel about Bonjour/… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] Re(2): Re(2): Is there a "secu… Graham Keellings (Leonix Solutions Pte Ltd)
- Re: [dtn-security] How do you feel about Bonjour/… Peter Lovell
- [dtn-security] How do you feel about Bonjour/Avah… Graham Keellings (Leonix Solutions Pte Ltd)