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What is the difference between having a firewall inside vs outside the network?

Quite often, the decision is based on other factors. What are the interface requirements? What is the budget? What are the routing requirements? The answers may drive the decision. Many modern ...
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What is the difference between having a firewall inside vs outside the network?

No matter where you place the firewall it's purpose is to filter traffic based on various parameters. However, the idea of a protected inside network, while still widely implemented, is a legacy ...
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What is the difference between having a firewall inside vs outside the network?

In any case, both firewall and router are parts of your network, so the difference you're asking about is the firewall in front of the WAN router or the firewall behind the WAN router. The common ...
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1 vote

IPSEC ESP tunnel mode - Are the ip addresses in outer IP HDR same as addresses in inner encrypted IP HDR?

The main point is that the tunneled packets are encapsulated and encrypted on the tunnel entrance (using ESP), and decrypted and decapsulated in their original form on exit. The outer packet is used ...
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IPSEC ESP tunnel mode - Are the ip addresses in outer IP HDR same as addresses in inner encrypted IP HDR?

They are not the same in tunnel mode. The outer addresses are the VPN endpoints (the devices doing the encryption). The inner (encrypted) addresses are the hosts that are communicating -- the host ...
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