Joe Touch. A TCP Authentication Option Extension for NAT Traversal. RFC, 6978:1-6, July 2013. [doi]
@article{rfc6978, title = {A TCP Authentication Option Extension for NAT Traversal}, author = {Joe Touch}, year = {2013}, month = {July}, doi = {10.17487/RFC6978}, url = {https://doi.org/10.17487/RFC6978}, researchr = {https://researchr.org/publication/rfc6978}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {6978}, pages = {1-6}, }