Device Switch Router Application Gateway Network Gateway Firewall Transport Gateway Operates At Data-Link Layer Network

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Device Switch Router Application Gateway Network Gateway Firewall Transport Gateway Operates At Data Link Layer Network 1 (37.37 KiB) Viewed 23 times

Device Switch Router Application Gateway Network Gateway Firewall Transport Gateway Operates At Data-Link Layer Network Layer Application Layer Network Layer Application Layer Transport Layer Packets Application Layer Multiple layers Presentation Layer Network Layer Session Layer Filtered by layer-2 address Forwarded by layer-4 address Forwarded by layer-5 address must be the same can be different Physical Layer Physical Layer Forwarded by layer-6 address Routed by layer-3 address Forwarded by layer-1 address Media types... Data-Link Layer Transport Layer Filtered by layer-7 address Filtering not tied to a single layer Network Layer Data-Link Layer