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Implicit Policy Fall-Through Authentication

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  • 8 months ago

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Authentication policy extensions

By default, unauthenticated traffic is permitted to fall to the next policy. This means that unauthenticated users are only forced to authenticate against a policy when there are no other matching policies. To avoid this, you can force authentication to always take place.

To set that authentication requirement:
config user setting
    set auth-on-demand {always | implicitly}
end

Where:

always

Always trigger firewall authentication on demand.

implicitly (default)

Implicitly trigger firewall authentication on demand. This is the default setting (and the behavior in FortiOS 6.0 and earlier).

In the following example, authentication is required; traffic that would otherwise be allowed by the second policy is instead blocked by the first policy.

To use forced authentication:
config user setting
    set auth-on-demand always
end
config firewall policy
    edit 1
        set name "QA to Database"
        set srcintf "port10"
        set dstintf "port9"
        set srcaddr "QA_subnet"
        set dstaddr "Database"
        set action accept
        set schedule "always"
        set service "ALL"
        set fsso disable
        set groups "qa_group"
        set nat enable
    next
    edit 2
        set name "QA to Internet"
        set srcintf "port10"
        set dstintf "port9"
        set srcaddr "QA_subnet"
        set dstaddr "all"
        set action accept
        set schedule "always"
        set service "ALL"
        set fsso disable
        set nat enable
    next
end

Related Videos

Implicit Policy Fall-Through Authentication

  • 370 views
  • 8 months ago

Authentication policy extensions

By default, unauthenticated traffic is permitted to fall to the next policy. This means that unauthenticated users are only forced to authenticate against a policy when there are no other matching policies. To avoid this, you can force authentication to always take place.

To set that authentication requirement:
config user setting
    set auth-on-demand {always | implicitly}
end

Where:

always

Always trigger firewall authentication on demand.

implicitly (default)

Implicitly trigger firewall authentication on demand. This is the default setting (and the behavior in FortiOS 6.0 and earlier).

In the following example, authentication is required; traffic that would otherwise be allowed by the second policy is instead blocked by the first policy.

To use forced authentication:
config user setting
    set auth-on-demand always
end
config firewall policy
    edit 1
        set name "QA to Database"
        set srcintf "port10"
        set dstintf "port9"
        set srcaddr "QA_subnet"
        set dstaddr "Database"
        set action accept
        set schedule "always"
        set service "ALL"
        set fsso disable
        set groups "qa_group"
        set nat enable
    next
    edit 2
        set name "QA to Internet"
        set srcintf "port10"
        set dstintf "port9"
        set srcaddr "QA_subnet"
        set dstaddr "all"
        set action accept
        set schedule "always"
        set service "ALL"
        set fsso disable
        set nat enable
    next
end