Yes, it's definitely possible to set up a LAN-to-LAN VPN between two pfSense firewalls in different networks using IPsec.

Public IP Addresses: Ensure both pfSense firewalls have public IP addresses.

Configure Firewall A:
Go to VPN > IPsec and add a new tunnel.
Set the Remote Gateway to the public IP of Firewall B.
In Phase 1, use Mutual PSK for authentication and...

What is fiber optic splicer
To understand the question about what is fiber optic splicer. Firstly we need to learn fiber optic cable, which is comprised of minimal glass or plastic, can transfer information between two sites with light technology efficiently.

what is fiber optic splicer? Up to now, The main methods of fiber optic splicing are Fusion splicing and Mechanical splicing. Both of them are popular for they cause much...

1. OTDR meaning
What OTDR meaning is that it is an instrument used for measuring fibre lengths and understand fibre loss. OTDR testing fiber inject high-powered light pulses into the fiber using specialized laser diodes. The parameters of optical fiber are measured by sending pulse signals and receiving the signal’s reflection. These reflections, known as Fresnel reflections, are measured by the OTDR to pinpoint the location of fiber condition...

An IP PBX (Private Branch Exchange) is a modern phone system that uses the internet to make and receive calls instead of traditional PSTN (Public Switched Telephone Network) phone lines. This means it can handle many calls at once without needing lots of physical wiring.After reading this article, you can understand What is IP PBX system, Why we use IP PBX and How does an IP PBX work.

What is IP PBX and IP PBX system
IP PBX,...