Probably a n00b question but I’m a bit lost and need some help.
I use a mikrotik router and make on the WAN (internet) side a pppoe connection. I do get a public /28 subnet. The first IP of that /28 is being used as the default gateway. At the LAN side I have several customers on separate VLAN’s. Currently I’m using NAT and this is working, but I wonder if I could eliminate NAT.
I would like to give them all 1 or 2 Public IP’s on each VLAN without using NAT. Would this be possible?
If you own the ENTIRE /28 you can turn on proxy ARP on the WAN interface to have it ‘fake’ having all IPs in the network assigned to it. You can then use more specific addresses from the network behiond the WAN interface directly. Search the forums for several fairly long and involved threads discussing this.
However, the much cleaner option would be to talk to your provider and ask them to give you a /30 for your WAN interface and route you the /28 via your IP on the /30. At that point you don’t have to use ugly hacks like proxy ARP and can use the /28 however you please. That is a very common thing for providers to do.
but I’m a bit lost and need some help.