Any place to reach out to Networking professionals for beta trial

Hi

I am working on a networking/security product as a SaaS offering. Wondering is there a forum where I can reach out to networking professionals announcing our product, hope to get them sign up for beta trial, and/or feedback.

This is a huge group of similar minded professionals (and I've worked in networking too for last 28 years) so just seeking suggestions of which group/sub-group/alias I can reach out. I think posting here will not be appropriate.

Thanks