The FORWARD chain processes the packets which should be forwarded to another destination (as in the case of a router).
ລະບົບຕ່ອງໂສ້ຂອງ FORWARD ປຸງແຕ່ງແພັກເກັດທີ່ຄວນຈະຖືກສົ່ງຕໍ່ໄປຍັງຈຸດ ຫມາຍ ປາຍທາງອື່ນ (ເຊັ່ນໃນກໍລະນີຂອງ router).