Webhook IP Whitelist by list of CIDRs

Feature Requests
1

The idea is:

As an admin/user of N8n self-hosted, I would like the ability to whitelist allowed IPs by CIDR range such as 10.0.0.0/8.

My use case:

I have multiple internal networks that I would like to whitelist where containers could receive one of 1000’s of IP addresses. Whitelisting every possible combination isn’t feasible.

Are you willing to work on this?

Yes

2

Have you tried using a regex inside a filter node? Maybe that could get you a bit further.

For accurately determining CIDRs you could also use the code node first while using the cidr-regex library. You could just copy the source and its ip-regex dependency instead of importing. Should be faster.

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