Which "firewalls" are you using?
Can you elaborate on what "to our client" means?
The Fiddler client application performs a version check on startup (e.g. by performing a HTTP GET to https://www.telerik.com/UpdateCheck.aspx?isBeta=True).
End-users may visit our website in their browser to download Fiddler.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items