Posted by: Rob Chee
on Nov 25, 2009
Cisco NAC appliance 4.7.1 was just recently released. The main new features are support for Windows 7 and Apple Macintosh OS 10.6 (Snow Leopard).
Posted by: Rob Chee
on Nov 25, 2009
Email security is an important facet of data protection, both for enterprises and individuals. Email security can be implemented to perform email authentication and/or email encryption. Both authentication and encryption are provided using Secure/Multipurpose Internet Mail Extensions (S/MIME) with public key cryptography (PKI). The basic requirements for PKI are a certificate authority (CA), a private key, and a public key. An example is shown later that explains how to set up PKI for email using Comodo as the CA and Mozilla Thunderbird as the email client.
Posted by: William Bell
on Nov 24, 2009
In October I started a series on the AXL SOAP toolkit and database in Cisco Unified Communication Manager (CUCM). You can check out part 1 here. Continuing the discussion, we will go into how to obtain and use the actual tool kit that Cisco provides.
Posted by: Rob Chee
on Nov 21, 2009
The Cisco Security team had started a podcast series through iTunes in 2008. They had 7 podcasts and then it died out. The podcasts are still available, on iTunes. Just search on Cisco and you'll see the Cisco security podcasts as well as other Cisco podcasts.
Posted by: Pete Welcher
on Nov 18, 2009
Posted by: Rob Chee
on Nov 8, 2009
SNMP is one of the key technologies used in out-of-band Cisco NAC Appliance deployments. The NAC Manager sends SNMP GET commands to the access switches to learn about the switch port configuration. The NAC Manager also sends SNMP SET commands to the access switches to change individual switch ports from the authentication VLAN to the access VLAN and vice versa. The access switches send SNMP traps to the NAC Manager to tell the NAC Manager about individual switch ports that go up or down and switch ports that have new MAC addresses connected to them. With that information, the NAC Manager can decide whether the switch port should be moved back to the authentication VLAN.
Posted by: Pete Welcher
on Nov 6, 2009
My recent blog articles referenced slides I built and presented 
at a Bluesnet Network Advisory Group meeting in Santa Barbara, CA. I obtained permission to post PDF versions of the Cisco slides (with the exception of some Site Survey slides). Together, my slides plus the Cisco slides make up a pretty solid two day introductory course in 802.11 wireless (WLAN).
Posted by: Pete Welcher
on Nov 4, 2009
In October 2009, Dr. Pete Welcher presented these slides at a Bluesnet Network Advisory Group meeting in Santa Barbara, CA. This presentation covers 802.11 WLAN traffic flows (control, data, VoWLAN) in a Wireless LAN (WLAN, WiFi, 802.11) network. These form a basis for troubleshooting WLAN and VoWLAN problems. Click this link to review the 
WLAN Traffic Flows (501 KB) seminar PDF.
Posted by: Pete Welcher
on Nov 3, 2009
In October 2009, Dr. Pete Welcher presented these slides at a Bluesnet Network Advisory Group meeting in Santa Barbara, CA. This presentation covers Wireless LAN (WLAN, WiFi, 802.11) Project Management -- things you really ought to know before you start an 802.11 WLAN project, especially info to gather before you do the Site Survey. It's no longer about basic coverage, it's about what degree of and quality of coverage is appropriate. And I'm told it can be 30% or more cheaper to get it right up front. Click this link to review the WLAN Project Management (773 KB) seminar PDF.
Posted by: Pete Welcher
on Nov 2, 2009
In October 2009, Dr. Pete Welcher presented these slides at a Bluesnet Network Advisory Group meeting in Santa Barbara, CA.This presentation covers Wireless LAN (WLAN, WiFi, 802.11) vendors.
