If you're wondering whether mirror.clarkson.edu is safe to use for downloading Linux distributions or open source software, the answer is straightforward: yes. This is a project run by Clarkson University's Open Source Institute, and it's been around since at least 2002. That kind of institutional backing and long history is exactly what you want to see in a mirror site.
Unlike many download sites that hide who runs them, Clarkson puts its name front and center. The site provides a contact email, an about page, and clear descriptions of what's hosted. There's no attempt to collect personal data or sell anything, so the absence of a privacy policy is perfectly normal for this type of service.
From a technical standpoint, the site is well-maintained. It uses modern encryption, loads quickly, and hasn't appeared on any blacklists or threat databases. The only minor note is the SSL certificate expiring in a couple of weeks, but that's a routine renewal issue. If you've been searching for mirror.clarkson.edu reviews, the short take is that it's exactly what it claims to be: a reliable university resource for open source software.