Why is dhcp needed

Planning the Network Deployment. Configuring an IPv4 Network. Enabling IPv6 on the Network. Troubleshooting Network Problems. IP Security Architecture Overview. Configuring IPsec Tasks. IP Security Architecture Reference. Internet Key Exchange Overview. Configuring IKE Tasks.

The host in any network can be assigned the IP address manually or dynamically. In a small home network having 2 or 3 computers, we can assign the IP addresses manually but imagine a network having hundreds of computer and you have to assign the IP addresses to all of them.

It can be a nightmare for network administrators!! No two hosts can have the same IP address and assigning them IP address manually can lead to errors and confusion. So, to resolve this problem DHCP is needed. Since the client has no way of validating the authenticity of a DHCP server, rouge ones can be used to provide incorrect network information. This can cause denial-of-service attacks or man-in-the-middle attacks where a fake server intercepts data that can be used for malicious purposes.

Conversely, because the DHCP server has no way of authenticating a client, it will hand out IP address information to any device that makes a request.

A threat actor could configure a client to continually change its credentials and quickly exhaust all available IP addresses in the scope, preventing company endpoints from accessing the network. The DHCP specification does addresses some of these issues. This tag can be used to control access to the network. There is also a provision to authenticate DHCP messages, but key management can be complicated and has held back adoption.

The use of Most of the leading network vendors support NAC, and it has become significantly simpler to deploy. Here are the latest Insider stories. This is typically done by the network administrator who needs to get a DHCP capability up and running quickly but does not have access to a DHCP server.

There are several benefits that make it advantageous for an enterprise to use DHCPv6. This change will also mean that your organization would want to have DHCP operate the same for both protocols. Enterprise organizations will want to take advantage of the centralized dual-protocol DHCP server to provide IPv4 and IPv6 addresses to client devices.

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