Inter-VDOM routing

In this example we will be setting up inter-VDOM links between a VDOM named "root" and another VDOM named "untrust". This will allow bidirectional traffic to traverse the 2 VDOMs without any additional cabling.

Prerequisites:

• Tested on FortiOS 6
• VDOMs created
• Links up

Process:

• Configure interfaces
• Configure policies
• Configure static routes

### Interfaces

config global

config system interface

    edit "internal1"

        set vdom "root"

        set ip 10.0.0.254 255.255.255.0

  set allowaccess ping https #This is your choice

        set type physical

    next

    edit "internal2"

        set vdom "untrust"

        set ip 192.168.1.254 255.255.255.0

        set allowaccess ping https  #This is your choice

        set type physical

    next

    edit "root-to-un0"

        set vdom "root"

        set ip 10.10.10.1 255.255.255.252

        set allowaccess ping

        set type vdom-link

    next

    edit "root-to-un1"

        set vdom "untrust"

        set ip 10.10.10.2 255.255.255.252

        set allowaccess ping

        set type vdom-link

    next

end

end

config vdom

edit root

### Policies

config firewall policy

    edit 1                         

        set name "int1-to-root-to-un0"

  set srcintf "internal1"     #this is your WAN intf

        set dstintf "root-to-un0"

        set srcaddr "all"           #Do not leave as all. Lock down.

        set dstaddr "all"           #Do not leave as all. Lock down.

        set action accept

        set schedule "always"

        set service "ALL"           #Do not leave as all. Lock down.

        set logtraffic disable

    next

    edit 2                         

        set name "root-to-un0-to-int1"

  set srcintf "root-to-un0"

        set dstintf "internal1"     #this is your WAN intf

        set srcaddr "all"           #Do not leave as all. Lock down.

        set dstaddr "all"           #Do not leave as all. Lock down.

        set action accept

        set schedule "always"

        set service "ALL"           #Do not leave as all. Lock down.

        set logtraffic disable

    next

    end

    ### Static Routes

    config router static

    edit 1

        set dst 192.168.1.0 255.255.255.0

        set gateway 10.10.10.2      #This is the OPPOSITE side of the VLink

        set device "root-to-un0"

    next

    end

    end

config vdom

edit untrust

### Policies

config firewall policy

    edit 1                         

        set name "int1-to-root-to-un0"

  set srcintf "internal2"     #this is your WAN intf

        set dstintf "root-to-un1"

        set srcaddr "all"           #Do not leave as all. Lock down.

        set dstaddr "all"           #Do not leave as all. Lock down.

        set action accept

        set schedule "always"

        set service "ALL"           #Do not leave as all. Lock down.

        set logtraffic disable

    next

    edit 2                         

        set name "root-to-un0-to-int1"

  set srcintf "root-to-un1"

        set dstintf "internal2"     #this is your WAN intf

        set srcaddr "all"           #Do not leave as all. Lock down.

        set dstaddr "all"           #Do not leave as all. Lock down.

        set action accept

        set schedule "always"

        set service "ALL"           #Do not leave as all. Lock down.

        set logtraffic disable

    next

    end

    ### Static Routes

    config router static

    edit 1

        set dst 10.0.0.0 255.255.255.0

        set gateway 10.10.10.1      #This is the OPPOSITE side of the VLink

        set device "root-to-un1"

    next

    end

-->

    end