[SOLVED] Blocking utorrent Application in Squid

FREQUENTLY ASKED QUESTIONS (Squid proxy)
Q: How to block utorrent application and torrent large file downloading in squid?


Utorrent application uses all the unregistered posts 1025-65535 with random selection method. So blocking all those port numbers will block the bulk file downloading with utorrent application.


Edit the Squid.conf configuration file
[root@server ~]# vi /etc/squid/squid.conf


By default all the port numbers from 1025-65535 are configured as "Safe_ports" and allowed for browsing. 
So disable that ACL by adding a "#" infront of the line (see below)
#acl Safe_ports port 1025-65535          # unregistered ports


And create a new ACL for the same port range just below the above line (with different acl name, like below)
acl Denied_ports port 1025-65535


And deny browsing to the websites with denied port numbers (both normal and secure)
http_access deny Denied_ports
http_access deny CONNECT Denied_ports
# now save the squid.conf file


Reload Squid server with new configuration.
[root@server ~]# service squid reload


Verify Denying
Verify denying with squid access.log file 
[root@server ~]# vi /var/log/squid/access.log

Extra Tip: You can also block downloading of all ".torrent" files in squid (link below)

• Block downloading file types like .mp3, .exe, .zip, etc in Squid

  

LABELS: CentOS, Debian, extra-tips, FAQ, Fedora, linux, Redhat, Squid Proxy, Ubuntu