Vyos

What is Vyos?

VyOS is a fully open-source, Linux-based network operating system that provides advanced routing, firewall, and VPN capabilities. It is designed to run on physical hardware, virtual machines, and cloud environments, making it a versatile solution for enterprise and lab networks alike.

VyOS uses a command-line interface (CLI) similar to proprietary systems like Cisco IOS and Juniper JunOS, offering network professionals a familiar experience without vendor lock-in.

Key Features

Routing

• Static and dynamic routing (BGP, OSPF, RIP).

• Policy-based routing.

Firewall

• Stateful firewall with zone-based configurations.

• NAT (SNAT, DNAT, and masquerading).

VPN

• IPsec, WireGuard, OpenVPN, and L2TP.

Network Services

• DHCP, DNS forwarding, and VRRP.

High Availability

• Load balancing and failover capabilities.

Cloud Support

• Compatible with AWS, Azure, and VMware.

Vyos Installation Steps

VyOS can run on bare metal or as a virtual machine. Follow these general steps to install it:

1. Download the VyOS ISO: Obtain the latest ISO image from the official website: https://vyos.io.

2. Create Bootable Media: Use a tool like Rufus (Windows) or dd (Linux/macOS) to write the ISO to a USB drive:

sudo dd if=vyos.iso of=/dev/sdX bs=4M status=progress

1. Boot and Install VyOS: Boot the target machine from the USB and follow the installation prompts:

install image

Commands

Name	Description
configure	enter configuration mode
commit save	commit and save changes
show configuration	show configuration
set interfaces ethernet eth0 address 192.168.1.1/24	set interfaces
show interfaces	show interfaces
delete interfaces ethernet eth0 address	delete interface address
set system host-name fw01-hanne	set system hostname
set protocols static route 0.0.0.0/0 next-hop 10.0.17.2	set static route
set system name-server 10.0.17.2	set system name server