Technical tip: Customize ISDB based on ports or GEO location
Description
This article describes how to restrict service ports or GEO location for certain ISDB object, in firewall policy there is no option to specify service port or GEO location once select ISDB object and these are controlled within ISDB object.
Scope
FortiGate.
Solution
Customise based on service ports
Changes can only be made from the CLI as below. This guide uses Microsoft Azure as an example.
- Find the ID for the ISDB object.
diagnose internet-service id-summary | grep Azure
id: 327786 name: "Microsoft-Azure"
- To view current ports configured:
diagnose internet-service id 327786
223.223.168.88-223.223.168.88 geo_id(25500) black list(0x0) proto(6) port(1-65535)
223.223.168.88-223.223.168.88 geo_id(25500) black list(0x0) proto(17) port(1-65535)
223.223.168.91-223.223.168.91 geo_id(25500) black list(0x0) proto(6) port(1-65535)
223.223.168.91-223.223.168.91 geo_id(25500) black list(0x0) proto(17) port(1-65535)
- Define the required port.
config firewall internet-service-addition
edit 327786
set comment ''
config entry
edit 1
set protocol 6 <- Protocol type (6 = TCP , 17 = UDP).
config port-range
edit 1
set start-port 443
set end-port 443
next
edit 2
set start-port 80
set end-port 80
next
end
next
end
next
end
- Restart the 'internet-service' service to make the changes take effect.
execute internet-service refresh
Note:
Starting from FortiOS v7.2.4, the command above has been updated to:
execute internet-service4 refresh
execute internet-service6 refresh
Example output:
It takes a while to reload, and it is expected that the console will freeze for a moment. Below is the output after the changes:
223.223.168.88-223.223.168.88 country(116) region(1450) city(18489) blacklist(0x0) reputation(4), domain(5) popularity(152) botnet(0) proto(6) port(80 443)
223.223.168.88-223.223.168.88 country(116) region(1450) city(18489) blacklist(0x0) reputation(4), domain(5) popularity(152) botnet(0) proto(17) port(1-65535)
223.223.168.91-223.223.168.91 country(116) region(1450) city(18489) blacklist(0x0) reputation(4), domain(5) popularity(152) botnet(0) proto(6) port(80 443)
223.223.168.91-223.223.168.91 country(116) region(1450) city(18489) blacklist(0x0) reputation(4), domain(5) popularity(152) botnet(0) proto(17) port(1-65535)
Customize based on GEO location:
Internet databases can be also filtered by country and region. Changes can only be made from the CLI as below. This guide uses Microsoft Azure whose IP is from city of Arizona, California, US as an example.
config firewall internet-service-name
edit "Azure-US"
set type location
set internet-service-id 327786
set country-id 840 <----- Used '?' to find the country ID.
set region-id 283 <----- Used '?' to find the region ID.
set city-id 111 <----- Used '?' to find the city ID.
next
end
Related article: