标签:
www.cisco.com -> Support -> Configure -> Technology
Security and VPN
ACLs, IPsec/IKE, SSH, etc.
FAQ
Standards
White Papers
Design Guide
Config Examples
product Documentation
Configuration Guides
Reference Guides
Release and General Information
http://www.ciscolive365.com
http://www.oreilly.com/ 上面有好多高质量的书
http://netacad.com
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原文地址:http://www.cnblogs.com/elewei/p/4782787.html