My ISP has installed a fiber link at the place where I work. It has provided an ethernet WAN link to my office and has given a set of static ip's on 187.xxx.xxx.224/29 network. I need to setup a linux router/Gateway so that I can make use of those static ips. This linux router/Gateway should be able to provide static internet ip's to my NAT router, mail server, webserver so on. The linux machine has two NIC's: eth0 and eth1. 187.xxx.xxx.225 should be it's public ip, and remaining 6 ip's should be made available for NAT router, mail server, webserver so on. I goggled for howtos, and most of them dealt with setting up NAT router, which I don't need.
EDIT1 I already have Ubuntu server installed. Can I do it with the default Ubuntu tools like iproute2, ifconfig, iptables?