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 The idea is to try out a sequence of well known hole punching techniques until one of them succeeds. ``punchd`` implements the following techniques:
 
 - [SYNI](https://www.uni-kassel.de/eecs/fileadmin/datas/fb16/Fachgebiete/UC/papers/HWW_11-SYNI.pdf) (TCP hole punching based on SYN injection), DOI: 10.1109/NCA.2011.66
-- [NUTSS](https://www.cs.cornell.edu/people/francis/nutss-fdna.pdf) (TCP hole punching, the asymmetrical non-spoofing approach described in section 4.2.2 of the paper), DOI: 10.1145/1016707.1016715
+- [NUTSS](https://www.cs.cornell.edu/people/francis/nutss-fdna.pdf) (TCP hole punching, the non-spoofing approach described in section 4.2.2 of the paper), DOI: 10.1145/1016707.1016715
 
 
 # How can I use punchd?