InformatiquesRéseauxTélécommunications

Cisco CCNA (640-553) Security Training – Using the "Certificate" Command

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In today's article, I'm going to quickly inform you about the Cisco IOS certificate chain configuration mode command named "certificate" .

Network administrators (like you) use the "certificate" command to manually add or delete certificates.

Below is the command syntax:

certificate certificate-serial-number

As you can see, the command is very easy to implement; the certificate-serial-number argument, is the serial number of the certificate that is to be either added or deleted.

In the examples below, the certificate with the serial number of "0123456789ABCDEF0123456789ABCDEF" is being added; then deleted. (Example # 1 is adding and Example # 2 is deleting)

Example # 1

Router> enable

Router # configure terminal

Router (config) #crypto ca certificate chain ittechtipsca

Router (config-cert-chain) # certificate 0123456789ABCDEF0123456789ABCDEF

Router (config-cert-chain) #end

Router # copy run start

Example # 2

Router> enable

Router # configure terminal

Router (config) #crypto ca certificate chain ittechtipsca

Router (config-cert-chain) # no certificate 0123456789ABCDEF0123456789ABCDEF

% Are you sure you want to remove the certificate [yes / no]? yes

% Be sure to ask the CA administrator to revoke this certificate.

Router (config-cert-chain) #end

Router # copy run start

As you can see, the way to delete a certificate is to type the word " no " in front of the command.

And, if you decide to use the command, make sure your router (s) is running Cisco IOS 11.3 T or higher.

I hope this article was very informative and helped you quickly understand the usage of the certificate command. If you need to learn more; I suggest you visit my website, were you'll find the latest information regarding the Cisco CCNA (640-553) Security exam techniques.

To your success,

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Source by Charles E Ross

Mourad ELGORMA

Fondateur de summarynetworks, passionné des nouvelles technologies et des métiers de Réseautique , Master en réseaux et système de télécommunications. ,j’ai affaire à Pascal, Delphi, Java, MATLAB, php …Connaissance du protocole TCP / IP, des applications Ethernet, des WLAN …Planification, installation et dépannage de problèmes de réseau informatique……Installez, configurez et dépannez les périphériques Cisco IOS. Surveillez les performances du réseau et isolez les défaillances du réseau. VLANs, protocoles de routage (RIPv2, EIGRP, OSPF.)…..Manipuler des systèmes embarqués (matériel et logiciel ex: Beaglebone Black)…Linux (Ubuntu, kali, serveur Mandriva Fedora, …). Microsoft (Windows, Windows Server 2003). ……Paquet tracer, GNS3, VMware Workstation, Virtual Box, Filezilla (client / serveur), EasyPhp, serveur Wamp,Le système de gestion WORDPRESS………Installation des caméras de surveillance ( technologie hikvision DVR………..). ,

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