@misc{1127266,
  author = {Elaine Barker and Quynh Dang and Sheila Frankel and Karen Scarfone and Paul Wouters},
  title = {Guide to IPsec VPNs:},
  year = {2020},
  month = {2020-06-01 04:06:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.800-77r1},
  language = {en},
}