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I have the following lines in /etc/squid/squid.conf:

acl bad_url url_regex "/etc/squid/block.acl"
http_access deny bad_url

All of the urls in block.acl must be blocked by the proxy server. It works for all ASCII domains, but when I add a non-ascii domain such as helfende-hände.de to /etc/squid/block.acl, the domain is not blocked.

How do I fix this?

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up vote 5 down vote accepted

Use the ASCII Punycode version of the domain name instead:

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