Squidguard stops working with an invalid Client(source) IP address

  • I use pfSense SquidGuard to allow a subset of LAN hosts to access certain internet domains. I've discovered that if an invalid IP address is entered in 'Groups ACL' > 'Client (source)', eg,, or SquidGuard allows all LAN hosts to access any internet domain. Just mentioning in case this is useful feedback - it certainly caught me out.

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