Perimeter 81 launches new Firewall-as-a-Service offering The network defense provider joins a growing list of companies offering cloud-based firewalls. Image: iStockphoto/LeoWolfert Secure access service edge (SASE) and network-as-a-service provider Perimeter 81, announced Tuesday a new Firewall-as-a-Service (FWaaS) offering designed to enhance the company's SASE platform. Perimeter 81's Network Traffic Control (NTC) offering is aimed at securing the network perimeter and builds upon the company's SASE offering, which includes its Zero Trust Network Access (ZTNA), Zero Trust Application Access (ZTAA), and DNS Filtering products. With NTC, IT teams can create network access policies to secure network traffic inside and outside of their physical network perimeter.