I have a modem supplied by my ISP who has set port 8 on it as bridged
I have a public IP 98.179.240.a that the IP, Subnet, Gateway and DNS info have been entered into network setting those setting are entered onto ens18

I am unable to connect to the internet,
Running Ubuntu 18.04
using Dell R610 with 96Gig ram, 2Tb of storage

can someone assist

Running Ubuntu 18.04 l