I have been successfully using squid on a small home network (all running Fedora Core 6) except for not being able to access certain academic websites. When I alter the Mozilla connection settings to allow for a direct connection with the Internet I can access these sites without problems. Why is this happening?

My squid.conf file is the default except for these 2 lines before "http_access deny all":
acl internal src 192.168.1.0/24
http_access allow internal

This is the error message I get (generated by squid):
ERROR
The requested URL could not be retrieved
While trying to retrieve the URL: ntserver1.wsulibs.wsu.edu:6443
The following error was encountered:
* Access Denied.
Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.

Thanks for the help! --Jerry

sounds like you simply need to add port 6443 to the Safe_ports ACL in your squid.conf...

sounds like you simply need to add port 6443 to the Safe_ports ACL in your squid.conf..

This isn't the problem, as the (default) squid.conf file contains the line:
acl Safe_ports port 1025-65535 # unregistered ports

Have you tried adding 6443 to SSL_ports? It's probably a https port judging by the 443 on the end of it.

I've added the line:
acl SSL_ports port 6443
to my squid.conf file. Now the error message is:

While trying to retrieve the URL: ntserver1.wsulibs.wsu.edu:6443
The following error was encountered:
* Connection to Failed
The system returned:
(13) Permission denied
The remote host or network may be down. Please try the request again.

Again, I don't have this problem when I bypass squid entirely and connect directly to the Internet

maybe check that your firewall isn't preventing the connection to port 6443...