Re: ospf authentication

Aaron,

Remember that the "Ip ospf authentication null" is the command that is used
to *disable* authentication. OSPF authentication can either be none (Or as
Brian called it Null), simple or MD5. The authentication method none
(Null), means that you have *no* authentication.

On Sat, Mar 10, 2012 at 5:36 PM, Aaron <aaron1_at_gvtc.com> wrote:

> But that's where it was weird (unless I'm not understanding what you are
> saying).
>
> I did this
>
> Router ospf 1
> Area 0 auth messag
>
> r6(config-subif)#do sh ip osp | in auth
> Area has message digest authentication
>
> and it seems that even with that turned on I can neighbor up with routers
> and I don't even have to provide a md5 password anywhere. Is that called
> type 0, 1, or 2? I'm getting the impression that what I've done was a
> half-baked type 2. In other words it ain't truly type 2 md5 auth until the
> int config "ip osp mess 1 md5 cisco" is applied. True?
>
> Aaron
>
>
> -----Original Message-----
> From: Joe Astorino [mailto:joeastorino1982_at_gmail.com]
> Sent: Saturday, March 10, 2012 7:24 PM
> To: Aaron; CCIE GROUPSTUDY
> Subject: Re: ospf authentication
>
> There are 3 types
>
> NULL, Clear text and MD5. So technically it can work without a password
> using NULL authentication type
>
>
>
> On 3/10/12, Aaron <aaron1_at_gvtc.com> wrote:
> > Isn't it weird that ospf authentication works even without a password?
> >
> >
> >
> > I enabled area 0 authentication and it works, even before I ever
> > specify a password anywhere.
> >
> >
> >
> > Aaron
> >
> >
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> --
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>
> Regards,
>
> Joe Astorino
> CCIE #24347
> http://astorinonetworks.com
>
> "He not busy being born is busy dying" - Dylan
>
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-- 
*Narbik Kocharians
*CCSI#30832, CCIE# 12410 (R&S, SP, Security)
*www.MicronicsTraining.com* <http://www.micronicstraining.com/>
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