@misc{92786,
  author = {Sheila Frankel},
  title = {An Introduction to IPsec (Internet Protocol Security)},
  year = {2001},
  month = {2001-03-30},
  publisher = {ITL Bulletin, National Institute of Standards and Technology, Gaithersburg, MD},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=151235},
  language = {en},
}