source ip location and filtering based on the geolocation

Hi All, Greetings.. need to check if any IP address from Ukraine and Russia is connecting to my network through my Perimeter FortiGate Firewall. could you please let me know how i can do the fil...

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Clive_Watson

Mar 09, 2022

jwalasingh

Good timing - I just answered this type of question on another thread earlier today, maybe

let IP_Data = 
    external_data(network:string,geoname_id:long,continent_code:string,continent_name:string ,country_iso_code:string,    country_name:string,is_anonymous_proxy:bool,is_satellite_provider:bool)
    ['https://raw.githubusercontent.com/datasets/geoip2-ipv4/master/data/geoip2-ipv4.csv']
    with (ignoreFirstRecord=true, format="csv");
CommonSecurityLog
| where DeviceVendor == "Fortinet"
| where DeviceProduct startswith "Forti"
| summarize ipCount=count() by IPAddress=DestinationIP    
| where isnotempty(IPAddress)
| evaluate ipv4_lookup(IP_Data, IPAddress, network)
| where country_iso_code  in ('RU','UA')

You just ned to swap line #8 to SourceIP if you want that instead? You may need to add other 'where' filters but this should be the basics.

Clive_Watson

Bronze Contributor

Dec 05, 2022

Dutchboy

I'm assuming the IP_data can be retrieved?

let IP_Data = 
    external_data(network:string,geoname_id:long,continent_code:string,continent_name:string ,country_iso_code:string,    country_name:string,is_anonymous_proxy:bool,is_satellite_provider:bool)
    ['https://raw.githubusercontent.com/datasets/geoip2-ipv4/master/data/geoip2-ipv4.csv']
    with (ignoreFirstRecord=true, format="csv");
IP_Data

The rest of the query assumes you have a Forti log source, you could look to see if you have any others in the CommonSecurityLog table (it won't work if you have no Firewalls sending data or if the Firewall uses other columns). This would look for any Product in the CEF Table:

let IP_Data = 
    external_data(network:string,geoname_id:long,continent_code:string,continent_name:string ,country_iso_code:string,    country_name:string,is_anonymous_proxy:bool,is_satellite_provider:bool)
    ['https://raw.githubusercontent.com/datasets/geoip2-ipv4/master/data/geoip2-ipv4.csv']
    with (ignoreFirstRecord=true, format="csv");
CommonSecurityLog
// | where DeviceVendor == "Fortinet"
// | where DeviceProduct startswith "Forti"
| summarize ipCount=count() by IPAddress=DestinationIP, DeviceProduct    
| where isnotempty(IPAddress)
| evaluate ipv4_lookup(IP_Data, IPAddress, network)
| where country_iso_code  in ('RU','UA')

You could also test against a source like SigninLogs if you have AAD?

let IP_Data = 
    external_data(network:string,geoname_id:long,continent_code:string,continent_name:string ,country_iso_code:string,    country_name:string,is_anonymous_proxy:bool,is_satellite_provider:bool)
    ['https://raw.githubusercontent.com/datasets/geoip2-ipv4/master/data/geoip2-ipv4.csv']
    with (ignoreFirstRecord=true, format="csv");
SigninLogs
| summarize ipCount=count() by IPAddress  
| where isnotempty(IPAddress)
| evaluate ipv4_lookup(IP_Data, IPAddress, network)

Dutchboy

Copper Contributor

Dec 05, 2022

IP_Data is retrievable. But as i understand , dont see "ipv4_lookup" under the evaluate query value.

Clive_Watson
Bronze Contributor
Dec 05, 2022
"network" and "ip_data" both come from the external data source - so if you still have an error (whatever that error is) it is probably the IPAddress column.
What do you mean by: 'dont see "ipv4_lookup"' - is the error message returned - "no data found" or something else?

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source ip location and filtering based on the geolocation

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