The FLIP is a combination of hardware and software. The hardware includes a TX Module, containing a fiber-optic transmitter/laser, and an RX Module, containing an optical receiver, but no laser. Firewall is one of the most important network protection equipment, with very strong anti-attack immunity, it can play an important role in enterprise internal network security protection. Next, ETU-LINK will introduce the firewall equipment and optical module collocation plan to you. NOTE: "X" = Supported in the table below NOTE: Please make proper FEC setting for SPF28 LR and SR on the switch side TIP: Some of the cables (thin Active Twinax SFP+). The Waterfall FLIP is a type of Unidirectional Gateway whose orientation can be reversed, enabling disciplined scheduled updates without the vulnerabilities firewalls always introduce., through the identification of the module information can be detected by the module and the. SFP (Small Form-factor Pluggable) is a compact, hot-pluggable network interface module used to connect network devices (switches, routers, firewalls) to fiber optic or copper cables. Its primary function is to achieve optoelectronic conversion by converting electrical signals into optical signals and vice versa.