For our application we need to whitelist the Infura URLs in our firewall. We have whitelisted the following URLs to get a connectivity to Ropsten:
https://ropsten.infura.io/*
wss://ropsten.infura.io/*
However, the firewall still refuses the connection. We suppose that there are some hidden redirects or responses. A nslookup ropsten.infura.io revealed redirects to a AWS URL.
nslookup ropsten.infura.io
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
ropsten.infura.io canonical name = monorepo-production-edge-alb-985829473.us-east-1.elb.amazonaws.com.
Name: monorepo-production-edge-alb-985829473.us-east-1.elb.amazonaws.com
Address: 52.3.78.131
Name: monorepo-production-edge-alb-985829473.us-east-1.elb.amazonaws.com
Address: 52.1.99.4
Name: monorepo-production-edge-alb-985829473.us-east-1.elb.amazonaws.com
Address: 35.169.193.102
Name: monorepo-production-edge-alb-985829473.us-east-1.elb.amazonaws.com
Address: 34.236.103.137
Can anyone tell me if the AWS URL is constant or how we could proceed to get Infura whitelisted on our firewall?