Let's say we want to deny all FTP requests from a particular subnet, known as, research labs. The configuration should look similar to the following:
acl ftp_requests proto FTP acl research_labs src 192.0.2.0/24 http_access deny research_labs ftp_requests
The previous configuration lines will instruct Squid to deny all the FTP requests from the network 192.0.2.0/24.
Please note that some firewalls block active FTP by default. Please check http://www.ncftp.com/ncftpd/doc/misc/ftp_and_firewalls.html for more information.
Apart from the previously mentioned standard schemes, we have a Squid specific URL scheme called cache_object, which is used for the cache manager (cachemgr) interface. ...
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