Challenges In IPsec And NAT Integration For Network Managers

Both IPsec and NAT have been with us for some time, but making them play together has been hard work. To IP gurus, NAT (Network Address Translation) is an ugly kludge because it changes the way IP works at a fundamental . . . Both IPsec and NAT have been with us for some time, but making them play together has been hard work. To IP gurus, NAT (Network Address Translation) is an ugly kludge because it changes the way IP works at a fundamental level. To you, the network manager responsible for handling network-addressing issues, NAT is often your friend, regardless of whether you're at a large ISP or enterprise, or at an SME (small-to-medium enterprise). Why? Because NAT lets you hide networks and hosts in a variety of ways. Likewise, IPsec (IP security) is your friend because you can securely connect remote offices and users over the Internet.

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