(a) Access to the website will still be blocked because the installation of Squid does not enable Squid by default. (b) Access to the website will be possible because Squid takes precedence over firewall rules, and we have not added the site to Squid’s blacklist.
Ntopng, nmap, Zabbix, and Suricata would all be acceptable answers.
A Zabbix agent collects information from the local host and passes it on to the Zabbix server, whereas a Zabbix proxy collects information from hosts and is capable of offloading the Zabbix server so that the workload can be distributed.