_Beginning package installation for squid…
Downloading package configuration file... done.
Saving updated package information... done.
Downloading squid and its dependencies...
Checking for package installation...
Downloading http://files.pfsense.org/packages/amd64/8/All/squid-2.7.9_3.tbz ...  could not download from there or http://ftp2.FreeBSD.org/pub/FreeBSD/ports/amd64/packages-8.1-release/All/squid-2.7.9_3.tbz.
of squid-2.7.9_3 failed!

Installation aborted.Backing up libraries...
Removing package...
Starting package deletion for squid-2.7.9_3...done.
Starting package deletion for squid_radius_auth-1.10...done.
Starting package deletion for libwww-5.4.0_4...done.
Removing squid components...
Tabs items... done.
Menu items... done.
Services... done.
Loading package instructions...
Include file squid.inc could not be found for inclusion.
Deinstall commands...
Not executing custom deinstall hook because an include is missing.
Removing package instructions...done.
Auxiliary files... done.
Package XML... done.
Configuration... done.
Cleaning up... Failed to install package.

Installation halted._

With this information, I can see that the package isn't being downloaded. But I don't know why.

• In this box, I have two interfaces: WAN - with pppoe - connect and a LAN.
• From pfSense, I can ping another websites, make lookups etc.
• I already made any-any allow rule (just for tests) in both interfaces, but it doesn't work neither.
  **- I can't download the package from LAN, by the URL, but in other websites it works.
• I can't access the files.pfsense.org domain, even from lynx.**

What could possible block the files.pfsense.org domain from my network? I don't have any other proxy or web filtering service…