This example will explain you “How to Block Web Sites” & “How to Stop Downloading”. I have use Web-Proxy test Package.
First, Configure Proxy.
/ip proxy
enabled: yes
src-address: 0.0.0.0
port: 8080
parent-proxy: 0.0.0.0:0
cache-drive: system
cache-administrator: "ASHISH PATEL"
max-disk-cache-size: none
max-ram-cache-size: none
cache-only-on-disk: no
maximal-client-connections: 1000
maximal-server-connections: 1000
max-object-size: 512KiB
max-fresh-time: 3d
Now, Make it Transparent
/ip firewall nat
chain=dstnat protocol=tcp dst-port=80 action=redirect to-ports=8080
Make sure that your proxy is NOT a Open Proxy
/ip firewall filter
chain=input in-interface= Your WAN Port src-address=0.0.0.0/0 protocol=tcp dst-port=8080 action=drop
Now for Blocking Websites
/ip proxy access
dst-host=www.vansol27.com action=deny
It will block website http://www.vansol27.com, We can always block the same for different networks by giving src-address. It will block for particular source address.
We can also stop downloading files like.mp3, .exe, .dat, .avi,…etc.
/ip proxy access
path=*.exe action=deny
path=*.mp3 action=deny
path=*.zip action=deny
path=*.rar action=deny.
Try with this also
/ip proxy access
dst-host=:mail action=deny
This will block all the websites contain word “mail” in url.
Example: It will block www.hotmail.com, mail.yahoo.com, www.rediffmail.com
27 January 2008
PCQ Examples
Per Connection Queue (PCQ) is a queuing discipline that can be used to dynamically equalize or shape traffic for multiple users, using little administration. It is possible to divide PCQ scenarios into three major groups: equal bandwidth for a number of users, certain bandwidth equal distribution between users, unknown bandwidth equal distribution between users.
[edit] Equal Bandwidth for a Number of Users
Use PCQ type queue when you need to equalize the bandwidth [and set max limit] for a number of users. We will set the 64kbps download and 32kbps upload limits.

There are two ways how to make this: using mangle and queue trees, or, using simple queues.
1. Mark all packets with packet-mark all:
/ip firewall mangle add chain=prerouting action=mark-packet new-packet-mark=all passthrough=no
2. Setup two PCQ queue types - one for download and one for upload. dst-address is classifier for user's download traffic, src-address for upload traffic:
/queue type add name="PCQ_download" kind=pcq pcq-rate=64000 pcq-classifier=dst-address
/queue type add name="PCQ_upload" kind=pcq pcq-rate=32000 pcq-classifier=src-address
3. Finally, two queue rules are required, one for download and one for upload:
/queue tree add parent=global-in queue=PCQ_download packet-mark=all
/queue tree add parent=global-out queue=PCQ_upload packet-mark=all
If you don't like using mangle and queue trees, you can skip step 1, do step 2, and step 3 would be to create one simple queue as shown here:
/queue simple add queue=PCQ_upload/PCQ_download target-addresses=192.168.0.0/24
[edit] Equal Bandwidth for a Number of Users
Use PCQ type queue when you need to equalize the bandwidth [and set max limit] for a number of users. We will set the 64kbps download and 32kbps upload limits.

There are two ways how to make this: using mangle and queue trees, or, using simple queues.
1. Mark all packets with packet-mark all:
/ip firewall mangle add chain=prerouting action=mark-packet new-packet-mark=all passthrough=no
2. Setup two PCQ queue types - one for download and one for upload. dst-address is classifier for user's download traffic, src-address for upload traffic:
/queue type add name="PCQ_download" kind=pcq pcq-rate=64000 pcq-classifier=dst-address
/queue type add name="PCQ_upload" kind=pcq pcq-rate=32000 pcq-classifier=src-address
3. Finally, two queue rules are required, one for download and one for upload:
/queue tree add parent=global-in queue=PCQ_download packet-mark=all
/queue tree add parent=global-out queue=PCQ_upload packet-mark=all
If you don't like using mangle and queue trees, you can skip step 1, do step 2, and step 3 would be to create one simple queue as shown here:
/queue simple add queue=PCQ_upload/PCQ_download target-addresses=192.168.0.0/24
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