49-129
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
 
Chapter 49      Configuring 802.1X Port-Based Authentication
Cisco IOS Security Features
Pre-fragmentation For Ipsec VPNs
http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_pre_frag_vpns.html
Router Security Audit Manageability
http://www.cisco.com/en/US/prod/collateral/routers/ps10537/product_bulletin_ISRG2_Manageability.pdf
Trusted Root Certification Authority
http://www.cisco.com/en/US/docs/security/cta/admin_guide/ctaCerts.html