Packet modification and utilization technology of SOHO router

As a gateway to handle all intranet terminal traffic, SOHO router plays an important role in the network. In this paper, we introduced the security threats faced by SOHO routers, and on this basis, we propose a packet modification method of "Discard-Resend". The method does not affect the normal operation of the router, nor does it affect the normal communication between the two sides. We have done experiments on this packet modification method in several scenarios from the view of network security personnel and network attackers and achieved the desired results. The packet modification method of "Discard-Resend" is a basic work in the security research of SOHO router, and it is of great significance.