Re: OSPF Authentication Methods - (3) [7:134182]

And two free Ginsu Knives, but only if your ORDER NOW!!!

:)

On 5/20/11 12:18 PM, JB Poplawski wrote:
> Checks in the mail, right? If I click the link do I get a free iPod
> or something? :)
>
> On Fri, May 20, 2011 at 9:53 AM, Darby Weaver <darby.weaver_at_gmail.com> wrote:
>> I'm working on the $1400.00 vouchers but I only tell people how to do this
>> who like my link on linkedin...
>>
>> There are ways... and some of them actually work.
>>
>> I've actually received 1 free voucher to the CCIE Lab so far.
>>
>> I'm eligible for another.
>>
>>
>>
>> Darby
>>
>>
>> On Fri, May 20, 2011 at 9:35 AM, James Poplawski <jb.poplawski_at_gmail.com>
>> wrote:
>>> They're offering lab vouchers?
>>>
>>> Sent from my iPhone
>>>
>>> On May 20, 2011, at 8:21 AM, Darby Weaver <darby.weaver_at_gmail.com> wrote:
>>>
>>>> Kewl - I've heard CCIE instructors state that since Null authentication
>>>> is
>>>> not either Plain text or MD5, then it was not a method.
>>>>
>>>> Um.. That can be a killer and cost points due inability to interpret
>>>> especially when a candidate rules out the option as acceptable since a
>>>> CCIE
>>>> instructor told them otherwise.
>>>>
>>>> Ouch!
>>>>
>>>> Nothing like being taught to fail... quite successfully.
>>>>
>>>> FYI - If you get a chance can you visit linkedin, join the group, and
>>>> click
>>>> on the Like button to like my link please:
>>>>
>>>>
>>>>
>>>> http://www.linkedin.com/groupAnswers?viewQuestionAndAnswers=&discussionID=54123549&gid=3443017&commentID=39652172&trk=view_disc
>>>>
>>>> I'm trying to win a free exam voucher.
>>>>
>>>>
>>>> Darby
>>>>
>>>> http://www.darbyslogs.blogspot.com
>>>>
>>>> On Fri, May 20, 2011 at 8:52 AM, manoj kaushal <kaushalpec_at_gmail.com>
>>>> wrote:
>>>>
>>>>> I read about it in CCNP ROUTE book
>>>>>
>>>>> 1. NULL
>>>>> 2. Plain text
>>>>> 3. MD5
>>>>>
>>>>> On Fri, May 20, 2011 at 5:58 PM, Darby Weaver
>>>>> <darby.weaver_at_gmail.com>wrote:
>>>>>
>>>>>> That's what I love about the CCIE Lab...
>>>>>>
>>>>>> Everyone says there are "only" 2 types of authentication in OSPF....
>>>>>>
>>>>>> 1. Plain text
>>>>>> 2. MD5
>>>>>>
>>>>>> If you listen to all your most knowledgeable friends on Groupstudy and
>>>>>> a
>>>>>> couple of three (maybe more CCIE's of some repute)...
>>>>>>
>>>>>> And then you find yourself in the "gladiator's chamber" one day... and
>>>>>> a
>>>>>> third is suggested by some hint of a vague clue...
>>>>>>
>>>>>> Unless you've heard of RFC2328 and then you find... there is a
>>>>>> third...
>>>>>> and
>>>>>> you find yourself astonished in about the same way everyone else was
>>>>>> when
>>>>>> we
>>>>>> found out that Luke Skywalker was not quite "The Last Hope" as
>>>>>> mentioned
>>>>>> by
>>>>>> Yoda... Yep... there are three...
>>>>>>
>>>>>>
>>>>>> OSPF as defined in
>>>>>> [RFC2328]
>>>>>> includes three different types of
>>>>>> authentication schemes: Null authentication, simple password and
>>>>>> cryptographic authentication. NULL authentication is akin to having
>>>>>> no authentication at all. In the simple password scheme of
>>>>>> authentication, the passwords are exchanged in the clear text on the
>>>>>> network and anyone with physical access to the network can learn the
>>>>>> password and compromise the security of the OSPF domain.
>>>>>>
>>>>>> In the cryptographic authentication scheme, the OSPF routers on a
>>>>>> common network/subnet share a secret key which is used to generate a
>>>>>> keyed MD5 digest for each packet and a monotonically increasing
>>>>>> sequence number scheme is used to prevent replay attacks.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Darby Weaver
>>>>>> Network Engineer
>>>>>> http://www.darbyslogs.blogspot.com
>>>>>>
>>>>>> darbyweaver_at_yahoo.com
>>>>> --
>>>>> Kaushal
>>>>>
>>>>>
>>>>
>>>> --
>>>> Darby Weaver
>>>> Network Engineer
>>>> http://www.darbyslogs.blogspot.com
>>>>
>>>> darbyweaver_at_yahoo.com
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
>>>> _______________________________________________________________________
>>>> Subscription information may be found at:
>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>
>>
>> --
>> Darby Weaver
>> Network Engineer
>> http://www.darbyslogs.blogspot.com
>>
>> darbyweaver_at_yahoo.com
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Fri May 20 2011 - 13:25:10 ART