ɐ nˈʌmbɚɹ ʌv kəmˈɜːʃəl pɹˈɑːdʌkts ˌoʊvɚkˈʌm ðɪs ɹᵻstɹˈɪkʃən baɪ tˈʌnəlɪŋ ðə tɹˈæfɪk θɹuː ɹˈɑːndɪvˌuː sˈɜːvɚz.
A number of commercial products overcome this restriction by tunneling the traffic through rendezvous servers.