After setting up ncsa_auth in squid (FreeBSD 6.3), Java applets wouldn’t run. I found this link that solved it.You can solve this by creating an acl like this:acl java_jvm browser Java/1.4 Java/1.5 Java/1.6http_access allow java_jvm Remember to keep it in front of any http_access lines regarding authentication, otherwise it won’t work.