Troubleshooting Squid
Squid logs both informational and error messages to files in the /var/log/squid/ directory. It is best to review these files first whenever you have difficulties.
Another source of errors could be unintended statements in the squid.conf file that cause no errors; mistakes in the configuration of hours of access and permitted networks that were forgotten to be added are just two possibilities.
By default, Squid operates on port 3128, so if you are having connectivity problems, you'll need to follow the troubleshooting steps in Chapter 4, "Simple Network Troubleshooting," to help rectify them.
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Some of Squid's capabilities go beyond the scope of this book, but you should be aware of them. For example, for performance reasons, you can configure child Squid servers on which certain types of content are exclusively cached. Also, you can restrict the amount of disk space and bandwidth Squid uses.
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