> For the complete documentation index, see [llms.txt](https://doc.i4e.com.bd/isp/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.i4e.com.bd/isp/configuracion_basica_de_la_red/fase1_gns3.md).

# Phase 1

In this section we will see the network topography scheme with gns3 according to phase 1, and how the main router configuration remains.

![topografía de red con gns3](/files/-MZZWRUZM0uxA3Iny_F3)

IP addresses of the different configured interfaces and bridges.

![Direccionamiento](/files/-MZZWRU_vlz-_qmBNaW6)

Interfaces, vlans and bridges with names to which they are configured.

![Interfaces definidas](/files/-MZZWRUaWBfhTdVrcj2K)

Dhcp client for the WAN that receives the IP from an ISP which in this case is the home router.

![dhcp cliente](/files/-MZZWRUb1tayIuaJW_bF)

Dhcp server for bridges.

![Dhcp server bridges](/files/-MZZWRUcZb4KWhHzzsXd)

Dhcp server with networks, gateway and dns.

![Dhcp server Network](/files/-MZZWRUdFLQ0V9mlLFKe)

Dhcp server with the leased ip's.

![Dhcp server Leases](/files/-MZZWRUez4N_yyzmtOgx)

DNS.

![DNS](/files/-MZZWRUfXxGXii2aswQo)

List of routes.

![Route List](/files/-MZZWRUgyhhkVQECzbcw)

Configuration of the ports of the bridges where it is observed with which vlan and interfaces are bridged.

![Bridges Ports](/files/-MZZWRUhvdl2HQHjL5Qw)

Nat configuration by Firewall.

![Firewall NAT](/files/-MZZWRUiaG3A9W1EhEI9)

Firewall rules.

![Firewall Rules](/files/-MZZWRUjAuJyKLyxC3C3)

Tunnel policies by IPsec.

![IPsec Policies](/files/-MZZWRUkKIC31PFmQQof)

Neighbors who are active because of the tunnel created.

![Ipsec Active Peers](/files/-MZZWRUld9q-K3Ug11K2)