firewalld is a dynamically managed firewall daemon supporting network zones, runtime/permanent configuration separation, and D-Bus interface for Linux.

Sophos Firewall is a next-generation network security platform offering consolidated protection, SD-WAN, ZTNA, and automated threat response managed via Sophos Central.

Sentex is an Internet Service Provider (ISP) offering high-speed ADSL and fibre optic connectivity for business and residential customers in Canada.