Prevent users from changing DHCP assigned IP address?

RouterOS Beginner Basics
1

We’d like to use Mikrotik on a x86 as our internet gateway.

I have configured a DHCP server on the Mikrotik but, by law, I have to guarantee that clients can only use the IP obtained through DHCP and can’t use a manual IP. Is there a way to enforce this on the Mikrotik.

In other routers you have this kind of “host authorisation”.

PPPoE is not an option as some of our CPEs can’t use it.

Thanks in advance.

2

you can guarantee that they will always get the same IP, but there is no way to prevent them using a manual address. I can’t imagine any software solution to this. The laptop is entirely in the user’s control, whatever he wants, he can set.

3

Sorry, I think I didn’t expressed the question correctly. Let me show you an example:

  • One of our clients receives an IP via our DHCP server
  • She manually changes her IP address to a different one.

Our question is if there exists a way to prevent forwarding that traffic from an IP we didn’t give.

4

http://wiki.mikrotik.com/wiki/How_to_block_non_DHCP_clients_without_the_firewall

HTH,