NAT Cleanup

[martindale]

Fixes some security issues, updates NAT strategy

[codecov]

Codecov Report

Attention: 41 lines in your changes are missing coverage. Please review.

Comparison is base (1e4e186) 60.35% compared to head (72a058d) 60.59%.

Files	Patch %	Lines
types/peer.js	62.19%	31 Missing ⚠️
types/environment.js	53.84%	6 Missing ⚠️
types/service.js	77.77%	2 Missing ⚠️
types/wallet.js	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #147      +/-   ##
==========================================
+ Coverage   60.35%   60.59%   +0.23%     
==========================================
  Files          65       65              
  Lines       15667    15759      +92     
==========================================
+ Hits         9456     9549      +93     
+ Misses       6211     6210       -1     

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