Proxy for a Linux VM

Hi to all

Excuse me if I make a thread with my problem that isn't directly related with PVE (but Mr. Google don't help me)

Since much time ago i want to have a proxy software that have this requirements:
1- The packages must be Open Source or free for use it.
2- Via Web can be managed, with all or most the principal options that have the squid proxy
3- The packages can be installed on CentOS 6.x
4- Make reports of audit that can be to see in Web mode
5- The reports can do it with several filters as "initial date to end date", by domain, by user, by month, week, day, etc.

Note: in matter of reports, Sarg for me is excelent, but unfortunately this software don't brings the manager of squid proxy.

6- If don't exist the packages that i am searching for install on CentOS with these requeriments (points 1 to 3), a software appliance will be good (that have all the requeriments mentioned above - points 1 to 5), but in this case I will need too these requirements: With support of virtio-block and virtio-net for install it as VM in PVE.

If somebody can help me with this problem, i will be very grateful

Best regards
Cesar