The VPNs service providers also know this and have introduced a feature called Stealthing, Ghosting or VPN Obfuscation (terminology varies, but they generally mean the same thing).
ຜູ້ໃຫ້ບໍລິການ VPNs ຍັງຮູ້ນີ້ແລະໄດ້ນໍາສະເຫນີຄຸນສົມບັດທີ່ເອີ້ນວ່າ Stealthing, Ghosting ຫຼື VPN Obfuscation (ຄໍາສັບຕ່າງໆແຕກຕ່າງກັນ, ແຕ່ພວກເຂົາມັກຈະຫມາຍຄວາມວ່າດຽວກັນ).