Dell W-7030 AOS 6.4.x User Guide - Page 869

Custom Certificate Support for RAP, Suite-B Support for ECDSA Certificate

Page 869 highlights

The AMON packet size has been capped at a default value of 1400 bytes to reduce the amount of fragmentation and message loss that typically occurs in larger packet sizes, which can force customers to fall back to the SNMP model. Message size has been capped at 1400 bytes to allow for the addition of AMON headers and PAPI/UDP/IP headers. Each packet only contains one message to further reduce the amount of overall message loss, as the loss of even a single fragment can render an entire message invalid. The AMON packet size can be modified using the following CLI command: (host)(config) #amon msg-buffer-size With the additional message load due to the smaller packet size and 1:1 message to packet ratio, output has also been increased from 10 second intervals to 1 second intervals to distribute packets more evenly, helping maintain a more stable and less congested traffic flow. Custom Certificate Support for RAP As Suite-B mandates using the AES-GCM encryption and ECDSA certificates for security, this feature allows you to upload custom RSA and ECDSA certificates to a RAP. This allows custom certificates to be used for IKEv2 negotiation which establishes a tunnel between the RAP and the controller. Feature support includes the ability to: l Upload a single CA certificate and RAP certificate which have either elliptical crypto key parameters with ECDSA or RSA parameters for signing and verification. l Store the certificate in the flash of the RAP l Store CSR and private key files in a USB l Delete certificates l Generate a CSR paired with a private key generation for the RAP. The private key is stored in the flash and the CSR can be exported out of the RAP to get it signed by the CA. If there is a custom certificate present in the flash when rebooting, this feature creates a suite B tunnel with the controller if the certificates uploaded are using EC algorithms. Otherwise it creates a tunnel using standard RAP IPSec parameters. Suite-B Support for ECDSA Certificate If a custom ECDSA certificate is present in the flash of a certificate-based RAP, it is automatically designated as a Suite-B RAP. On the controller side, tunnel creation uses the server certificate as a default VPN server certificate. Administering Suite-B support for a RAP includes these steps which are described in the following sections: 1. Setting the Default Server Certificate 2. Import a custom certificate 3. Generate a Certificate Signing Request (CSR) 4. Upload the certificate Setting the Default Server Certificate In the CLI To set the default server certificate that is presented to the RAP as the default VPN server certificate: (host) (config) #crypto-local isakmp server-certificate To add the CA certificate to verify the RAP certificate: (host) (config) #crypto-local isakmp ca-certificate 869 | Management Access Dell Networking W-Series ArubaOS 6.4.x | User Guide

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869
| Management Access
Dell Networking W-Series ArubaOS 6.4.x | User Guide
The AMON packet size has been capped at a default value of 1400 bytes to reduce the amount of
fragmentation and message loss that typically occurs in larger packet sizes, which can force customers to fall
back to the SNMP model. Message size has been capped at 1400 bytes to allow for the addition of AMON
headers and PAPI/UDP/IP headers. Each packet only contains one message to further reduce the amount of
overall message loss, as the loss of even a single fragment can render an entire message invalid.
The AMON packet size can be modified using the following CLI command:
(host)(config) #amon msg-buffer-size <msg-buffer-size>
With the additional message load due to the smaller packet size and 1:1 message to packet ratio, output has
also been increased from 10 second intervals to 1 second intervals to distribute packets more evenly, helping
maintain a more stable and less congested traffic flow.
Custom Certificate Support for RAP
As Suite-B mandates using the AES-GCM encryption and ECDSA certificates for security, this feature allows you
to upload custom RSA and ECDSA certificates to a RAP. This allows custom certificates to be used for IKEv2
negotiation which establishes a tunnel between the RAP and the controller. Feature support includes the ability
to:
l
Upload a single CA certificate and RAP certificate which have either elliptical crypto key parameters with
ECDSA or RSA parameters for signing and verification.
l
Store the certificate in the flash of the RAP
l
Store CSR and private key files in a USB
l
Delete certificates
l
Generate a CSR paired with a private key generation for the RAP. The private key is stored in the flash and
the CSR can be exported out of the RAP to get it signed by the CA.
If there is a custom certificate present in the flash when rebooting, this feature creates a suite B tunnel with the
controller if the certificates uploaded are using EC algorithms. Otherwise it creates a tunnel using standard RAP
IPSec parameters.
Suite-B Support for ECDSA Certificate
If a custom ECDSA certificate is present in the flash of a certificate-based RAP, it is automatically designated as a
Suite-B RAP. On the controller side, tunnel creation uses the server certificate as a default VPN server
certificate.
Administering Suite-B support for a RAP includes these steps which are described in the following sections:
1. Setting the Default Server Certificate
2. Import a custom certificate
3. Generate a Certificate Signing Request (CSR)
4. Upload the certificate
Setting the Default Server Certificate
In the CLI
To set the default server certificate that is presented to the RAP as the default VPN server certificate:
(host) (config) #crypto-local isakmp server-certificate
<server_certificate_name>
To add the CA certificate to verify the RAP certificate:
(host) (config) #crypto-local isakmp ca-certificate <trusted CA>