udp hole punch and port restricted cone NAT，
Flaw in ICMP holepunching?
ice4j connectivity on internet
Do NATs rewrite ipAddress in payload of ICMP packets? [closed]
Test or Check Reverse DNS on a Linux / Unix
Phone number masking/mapping/translation APIs or services
How can I separate logs based on source IP or hostname behind NAT using syslog-ng?
Many to one NAT on Fortigate
How to redirect packet originated from localhost by using pf in os x yosemite?
Finding Hosts over NAT
UDP/TCP hole punching vs UPnP vs STUN vs?
Set up Windows as a router using Powershell
Domain Name Split to Subnet DD-WRT
under what senarios does SERVER REFLEXIVE and PEER REFLEXIVE addresses/candidates differ from each other?
L2TP/IPSec NAT probelm
Workstation 9 Error: Connection activation failed: Device not managed by NetworkManager or unavailable