To see how to configure a Security Group to allow access only from We could easily change only one file in the deployments code to replicate it.ĭo you use WAF? Check out the previous post Should something change in the company infrastructure, We’ve seen how to create and share the list of IP addresses betweenĭifferent security groups and WAF rules. You’ll find a live example and templates to use it in your projects The last expression null_resource.ipv4.*.triggers.cidr selects the addressesĪll sources from the post are available on the GitHub The null_resource resource with count attribute works as the loop.

There is no direct loop function in Terraform 0.11.11. Terraform has theĬompact function to remove empty strings from a list. We replace incorrect elements with empty strings. As far as I see, Terraform loses the fact a list item was a map.Īn attempt to implement that may fail with an error like that: Please do not try that way, it does not work, I suppose that theĭoes not make it work. WAF rules in Terraform by turning every entry

Let’s see how we may avoid duplication List to List of Mapsįirst idea - let’s convert the existing list of IP addresses into The format is different from one we use in the ip-whitelist module, Resource 'aws_waf_rule' 'wafrule' Īs we see, ip_set_descriptors parameter has type list,Įach element of which is a map with two keys: type and value. Let’s create a module that exports all IP addresses for the white list. In the code instead to avoid hard-coded IP addresses (which are subject to change). Hold and export the list of whitelisted IPv4 addresses. I have the module called ip-whitelist (in the ip-whitelist folder) to Is the standard way to avoid code duplicates in the infrastructure code. We allow access to the project only from specific IP addresses of developers and offices. Production and staging environments, v0.11.11 in our case. We have a traditional application on AWS, where

Have you ever tried to set up CloudFront WAF rules and Security GroupsĪddresses? Having the list of these specific IP addresses coded only once.

Aws waf terraform