1) Symantec Endpoint Protection 12.1: Best Practices for Disaster Recovery with the Symantec Endpoint Protection Manager
http://www.symantec.com/docs/TECH160736
2) Best practices regarding Intrusion Prevention System technology
http://www.symantec.com/docs/TECH95347
3) Symantec Endpoint Protection 12.1 - Virtualization Best Practices
http://www.symantec.com/docs/TECH173650
4) About best practices for creating application control rules
http://www.symantec.com/docs/HOWTO55145
5 ) About best practices for LiveUpdate policy settings
http://www.symantec.com/docs/HOWTO55015
6) Best practices for Firewall policy settings
http://www.symantec.com/docs/HOWTO55279
7) Shared Insight Cache - Best Practices and Sizing guide
http://www.symantec.com/docs/TECH174123
8) Best Practices: Configuring a Symantec Endpoint Protection environment in a DMZ
http://www.symantec.com/docs/TECH178325
9) Best practices when deploying Symantec Endpoint Protection client package over saturated 64k WAN links.
http://www.symantec.com/docs/TECH132352
10) Best practices for running Symantec AntiVirus Corporate Edition or Endpoint Protection and Symantec Mail Security for Domino on the same server
http://www.symantec.com/docs/TECH80506
11) Best Practices for Symantec Endpoint Protection on Citrix and Terminal Servers
http://www.symantec.com/docs/TECH91070
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License related articles:
Licensing Symantec Endpoint Protection
http://www.symantec.com/docs/HOWTO55056
Purchasing licenses
http://www.symantec.com/docs/HOWTO55072
Where to buy a Symantec product license
http://www.symantec.com/business/support/index?page=content&id=HOWTO55298
Product license requirements
http://www.symantec.com/docs/HOWTO55074
Maintaining your license
http://www.symantec.com/docs/HOWTO55300
Activating your new or renewed Symantec Endpoint Protection 12.1 product license
http://www.symantec.com/business/support/index?page=content&id=HOWTO55294
About renewing your Symantec Endpoint Protection license
http://www.symantec.com/business/support/index?page=content&id=HOWTO55071#v16222267
About product upgrades and licenses
http://www.symantec.com/docs/HOWTO55308
Checking license status
http://www.symantec.com/business/support/index?page=content&id=HOWTO55070#v16222262
About multi-year licenses
http://www.symantec.com/docs/HOWTO55354
Importing license
http://www.symantec.com/business/support/index?page=content&id=HOWTO55080
Recovering a deleted license
http://www.symantec.com/docs/HOWTO55301
Trialware :
About the trialware license
http://www.symantec.com/docs/HOWTO55075
Download SEP 12.1 Trial ware
https://www4.symantec.com/Vrt/offer?a_id=117524
Issues :
Do User Mode Clients in Symantec Endpoint Protection 12.1 Require Additional Licenses
http://www.symantec.com/docs/TECH163955
About obsolete clients and their impact on licenses
http://www.symantec.com/docs/HOWTO55345
Renewing license prompts to add *.norton.com to Trusted Sites
http://www.symantec.com/docs/TECH163752
When purchasing license, Company Contact and Technical Contact fields do not accept international characters
http://www.symantec.com/docs/TECH163784
License purchase or renewal Web site appears blank
http://www.symantec.com/docs/TECH163686
Downloading a license file for a new or renewed license, or a license upgrade
http://www.symantec.com/docs/HOWTO55112
Licensing an unmanaged client
http://www.symantec.com/docs/HOWTO55368
Licensing enforcement rules
http://www.symantec.com/docs/HOWTO55135
Required exclusions for proxy servers to allow Symantec Endpoint Protection to connect to Symantec reputation and licensing servers
http://www.symantec.com/business/support/index?page=content&id=TECH162286
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Few More Helpful Articles:
Installation and Migration Documents for Symantec Endpoint Protection 12.1
http://www.symantec.com/docs/TECH163707
Upgrading and migrating to Symantec Endpoint Protection 12.1
http://www.symantec.com/docs/TECH163602
Symantec Endpoint Protection 12.1 System Requirements
http://www.symantec.com/docs/TECH163806
Release Notes for 12.1 Symantec Endpoint Protection, Symantec Endpoint Protection Small Business Edition
http://www.symantec.com/docs/DOC4332
Symantec Endpoint Protection and Symantec Network Access Control Implementation Guide 12.1
http://www.symantec.com/docs/DOC4321
Symantec Endpoint Protection 12.1: Installing the Manager for the first time and deploying clients
http://www.symantec.com/docs/TECH163580
Symantec™ Endpoint Protection Getting Started Guide
http://www.symantec.com/docs/DOC4322
Symantec Endpoint Protection Migration Reference Guide
http://www.symantec.com/docs/DOC4328
How to detect Symantec Endpoint Protection services in version 12.1
http://www.symantec.com/docs/TECH162901
About the files and folders that Symantec Endpoint Protection excludes from virus and spyware scans
http://www.symantec.com/docs/HOWTO55233
Installing clients with Active Directory Group Policy Object
http://www.symantec.com/docs/HOWTO55426
SNAC will remove MD5 from authentication methods list of MS IAS policy.
http://www.symantec.com/docs/TECH163333
Troubleshooting communication problems between the management server and the client
http://www.symantec.com/docs/HOWTO55017
Clearing log data from the database manually
http://www.symantec.com/docs/HOWTO55449
Excluding a file or a folder from scans.
http://www.symantec.com/docs/HOWTO55205
Configuring your clients to communicate with Shared Insight Cache
http://www.symantec.com/docs/HOWTO55321
How to reconfigure Symantec Endpoint Protection Manager to communicate with upgraded SQL Server
http://www.symantec.com/docs/TECH162881
Thanks Chetan for good artical
Wow this is probably the best page that I ever saw about SEP, containing all in one information :-)
Thanks for sharing !