@misc{1195281,
  author = {S E Frankel and K Kent and R Lewkowski and A D Orebaugh and R W Ritchey and S R Sharma},
  title = {Guide to IPsec VPNs:},
  year = {2005},
  month = {2005-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.800-77},
  language = {en},
}