[j-nsp] Remote Access Security Reference Architecture

[Harri Makela]

Hi There
Sorry, this request is not directly related to Juniper but a very much generic question.
I am looking for a high level remote access security reference architecture and best practices. Following NIST document looks like a good start: 
Guide to Enterprise Telework and Remote Access Security http://csrc.nist.gov/publications/nistpubs/800-46-rev1/sp800-46r1.pdf 
Can anyone please give any further recommendations ? 

Thanks in advance