The mistake of traditional firewall is that

The problem of traditional firewall is that it can prevent from the inside, but not from the outside. According to relevant data, the traditional firewall has structural limitations, which can not meet the needs of the coexistence of wired networks and wireless networks, and its work efficiency is low. If the hardware configuration is low or the parameters are improperly configured, the firewall will form a network bottleneck, and the traditional firewall can't prevent the inside and the outside.