I remember it explicitly, but I have been in webdev since the 90s, and using alternate ports was more common back then. One of the original vulns for this was r

I remember it explicitly, but I have been in webdev since the 90s, and using alternate ports was more common back then. One of the original vulns for this was reported in 2001. https://www.kb.cert.org/vuls/id/476267 https://www.kb.cert.org/vuls/id/476267