5 Public IP and ASA 5506-X doesn't work

[alladin9000]

Hi community,

My internet provider give me 5 public IP addresses from subnet XX.XX.XX.56 /29

I want to use 5 of them to connect internal servers follow this table:

XX.XX.XX.58 -> IP for Internet gateway

XX.XX.XX.59 -> 192.168.1.19 Port 80

XX.XX.XX.60 -> 192.168.1.20 Port 8080

XX.XX.XX.61 -> 192.168.1.10 Port 21

XX.XX.XX.62 -> 192.168.1.17 Port 8443

Old router (Drytec) use DHCP connection to modem in bridge mode and got 5 aliases, which I could forwarded to internal IP addresses. When I try to setup cisco ASA 5506-X, DHCP doesnt work. What I suppose to do first?

Thank you for help. 

[Jon Marshall]

Just configure your NAT statements on your firewall and it should work fine. 

Jon

[alladin9000]

Should I create 1:1 NAT for each address?

[Jon Marshall]

Up to you really. 

You can but you could also just one of the IPs because all the ports are different. 

Both should work. 

Jon

[alladin9000]

I have public DNS records for each server IP's, so one IP will not work. But how 5506-X recognize IP, if they are not pop up in DHCP request? From other side I need all internal computers except those servers go to the internet over one IP. I just litl be confused in this situation.

[Jon Marshall]

When you configure NAT the ASA becomes responsible for that IP so as long as your ISP does the right thing so should your firewall. 

Jon