Abstract：Network space is global, virtual and without national bounds. As such network security has the basic characteristic of a global public good and cannot escaped problems of externality and a free ride. Traditional views within international political economy hold that global public goods are primarily provided through two channels: the hegemon or international institutions. As far as network security is concerned, because few states are willing to obtain network security at the expenses of seriously compromising national security, the route of entrusting the hegemon with provision of this public good is not tenable. This scenario accentuates the important role that international institutions must play in providing network security, necessitating the construction of an international network security framework. Such a construction has several implications. First, the idea of multilateral engagement must replace the monopolist or hegemonic approach. Second, international network technology organizations and intergovernmental organizations must cooperate with each other to form network protocols of varying binding power. Third, negotiations regarding cyber-space security must proceed step by step and around different themes. Fourth, the prevailing situation-response mentality and agenda must giveway to an active, more predictive, anticipatory, and pre-emptive approach. Fifth, cyber-space security should be incorporated into the existing global security framework in order for it to develop smoothly.