Query: network_security_group_remote_access_restricted

with network_sg as (
  select
    distinct name sg_name
  from
    azure_network_security_group nsg,
    jsonb_array_elements(security_rules) sg,
    jsonb_array_elements_text(
      sg -> 'properties' -> 'destinationPortRanges' || (sg -> 'properties' -> 'destinationPortRange') :: jsonb
    ) dport,
    jsonb_array_elements_text(
      sg -> 'properties' -> 'sourceAddressPrefixes' || (sg -> 'properties' -> 'sourceAddressPrefix') :: jsonb
    ) sip
  where
    sg -> 'properties' ->> 'access' = 'Allow'
    and sg -> 'properties' ->> 'direction' = 'Inbound'
    and (
      sg -> 'properties' ->> 'protocol' ilike 'TCP'
      or sg -> 'properties' ->> 'protocol' = '*'
    )
    and sip in (
      '*',
      '0.0.0.0',
      '0.0.0.0/0',
      'Internet',
      'any',
      '<nw>/0',
      '/0'
    )
    and (
      dport in ('22', '3389', '*')
      or (
        dport like '%-%'
        and (
          (
            split_part(dport, '-', 1) :: integer <= 3389
            and split_part(dport, '-', 2) :: integer >= 3389
          )
          or (
            split_part(dport, '-', 1) :: integer <= 22
            and split_part(dport, '-', 2) :: integer >= 22
          )
        )
      )
    )
)
select
  sg.id resource,
  case
    when nsg.sg_name is null then 'ok'
    else 'alarm'
  end as status,
  case
    when nsg.sg_name is null then sg.title || ' restricts remote access from internet.'
    else sg.title || ' allows remote access from internet.'
  end as reason,
  sg.resource_group as resource_group,
  sub.display_name as subscription
from
  azure_network_security_group as sg
  left join network_sg as nsg on nsg.sg_name = sg.name
  join azure_subscription as sub on sub.subscription_id = sg.subscription_id;