Browser is Redirected to Admin UI on Some Sites

Question: Why the browser gets redirected to Admin UI of Web Safety running on the virtual appliance when we visit some sites?

Answer: Most probably the remote site you are visiting has configured incorrect DNS AAA entries for IPv6 - it redirects to :: which is treated as localhost in Squid proxy and thus you see the Admin UI of Web Safety running on 80 port on the proxy box.

Correct solution to this problem is to tell the web administrator of that remote site to fix DNS entries.