I'll try to reproduce it here.
You get this memory alert once or after squid restart alerts are frequent?
The memory alerts only shows after a Squid restart. After the initial alerts there are no more alerts. At least that is what is occurring here.
Dec 30 15:11:54 php: : There were error(s) loading the rules: /tmp/rules.debug:19: cannot define table pfBlockerTBG: Cannot allocate memory pfctl: Syntax error in config file: pf rules not loaded - The line in question reads [19]: table <pfBlockerTBG> persist file "/var/db/aliastables/pfBlockerTBG.txt"
Dec 30 15:11:54 php: : New alert found: There were error(s) loading the rules: /tmp/rules.debug:19: cannot define table pfBlockerTBG: Cannot allocate memory pfctl: Syntax error in config file: pf rules not loaded The line in question reads [19]: table <pfBlockerTBG> persist file "/var/db/aliastables/pfBlockerTBG.txt"
Dec 30 15:11:46 php: : The command '/sbin/pfctl -o basic -f /tmp/rules.debug' returned exit code '1', the output was '/tmp/rules.debug:19: cannot define table pfBlockerTBG: Cannot allocate memory pfctl: Syntax error in config file: pf rules not loaded'
Dec 30 15:11:16 php: : There were error(s) loading the rules: /tmp/rules.debug:19: cannot define table pfBlockerTBG: Cannot allocate memory pfctl: Syntax error in config file: pf rules not loaded - The line in question reads [19]: table <pfBlockerTBG> persist file "/var/db/aliastables/pfBlockerTBG.txt"
Dec 30 15:11:16 php: : New alert found: There were error(s) loading the rules: /tmp/rules.debug:19: cannot define table pfBlockerTBG: Cannot allocate memory pfctl: Syntax error in config file: pf rules not loaded The line in question reads [19]: table <pfBlockerTBG> persist file "/var/db/aliastables/pfBlockerTBG.txt"
Dec 30 15:11:07 php: : The command '/sbin/pfctl -o basic -f /tmp/rules.debug' returned exit code '1', the output was '/tmp/rules.debug:19: cannot define table pfBlockerTBG: Cannot allocate memory pfctl: Syntax error in config file: pf rules not loaded'
Dec 30 15:10:32 php: /pkg_edit.php: Reloading Squid for configuration sync
Dec 30 15:10:32 check_reload_status: Reloading filter
Dec 30 15:10:32 check_reload_status: Syncing firewall
Dec 30 15:10:32 check_reload_status: Reloading filter
Dec 30 15:10:31 php: /pkg_edit.php: Reloading Squid for configuration sync