Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Sits between two networksUsed to protect one from the otherPlaces a bottleneck between the networks All communications must pass through the bottleneck – this gives us a single point of control.Packet FilteringRejects TCP/IP packets from unauthorized hosts and/or connection attempts bt unauthorized hosts Network Address Translation (NAT)Translates the addresses of internal hosts so as to hide them from the outside worldAlso known as IP masquerading Proxy ServicesMakes high level application level connections to external hosts on behalf of internal hosts to completely break the network connection between internal and external hosts...
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Firewalls Packet Filtering
