Hi Tyson

Even, if the "crypto isakmp identity address" is configured which is the
default, the IOS uses hostname as the identity when the authentication
method used by the IPSec VPN is rsa-sig.

If we configure "crypto isakmp identity hostname" and have both types of VPN
connections using pre-shared keys and rsa-sig, only hostname will be sent
for IPSec connections that uses pre-shared which may fail, if we don't have
dns resolution mappings.

So, we need not configure "crypto isakmp identity hostname" when default
configuration is used unless the identity "crypto isakmp identity dn"

With regards
Kings

On Sat, Jun 25, 2011 at 11:28 AM, Tyson Scott <[email protected]> wrote:

> You should configure the command.****
>
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> Regards,****
>
>  ****
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> Tyson Scott - CCIE #13513 R&S, Security, and SP
> Managing Partner / Sr. Instructor - IPexpert, Inc.
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> *From:* [email protected] [mailto:
> [email protected]] *On Behalf Of *Kingsley Charles
> *Sent:* Tuesday, June 21, 2011 1:15 AM
> *To:* Kok Yong CHEONG
> *Cc:* [email protected]
> *Subject:* Re: [OSL | CCIE_Security] Crypto identity hostname for GETVPN
> with CA****
>
> ** **
>
> If remember correctly, when ISAKMP RSA-SIG is used for authentication, the
> IOS uses crypto identity of hostname even, if you have not configured it.
>
> With regards
> Kings****
>
> On Tue, Jun 21, 2011 at 9:08 AM, Kok Yong CHEONG <[email protected]>
> wrote:****
>
> hi Guys,
>
> i have doubt on following:
>
> i read somewhere that if you have GETVPN with CA server (authentication
> rsa-sig), you need to have "crypto identity hostname" to work, however, when
> i look at GETVPN deployment guide, i don't see the "crypto identity
> hostname" is configured (default is crypto identity address).  do i need it
> when work with GETVPN with CA ?
>
> many thanks in advance
>
> Regards
> KY
>
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