Brain dump for at least semi-good ideas

Tag: Powershell

Fortigate API – FortiOS 6.2

Recently I changed my firewall from Sophos UTM to a Fortigate. Since I have a decent lab setup at home with a bunch of services I decided to try out the Fortigate API. However, to my surprise there was no API documentation openly available online. To get hold of it one had to be a part of the Fortinet Developer Network which requires endorsement from two Fortinet employees. Personally I’m not a bit fan of keeping these things behind closed doors. I think it benefits neither the company, nor the customer.

So in case someone else is in the same situation that I was I thought I’d write a short intro on how to use the API using an admin account using Powershell.


First step is to do send a post against /logincheck using form data:

# Authentication against the box
$PostParameters = @{
    "username" = $FortigateSettings.user;
    "secretkey" = $FortigateSettings.password;

$Result = Invoke-WebRequest -Method POST "" -Body $PostParameters -SessionVariable FortigateSession

The code above also saves the cookies from the response into a session variable called FortigateSession. From this variable we will also extract the CSRFTOKEN cookie value which is required when one wants to change things on the device.

$CSRFTOKEN = ($FortigateSession.Cookies.GetCookies("") | Where-Object { $ -eq "ccsrftoken" }).value.replace("`"", "")

Now we’re set to run commands against the Fortigate API by using the session variable.


# Get the DHCP configuration
Invoke-WebRequest "" -WebSession $FortigateSession

# Get a list of the DNS databases
Invoke-WebRequest "" -WebSession $FortigateSession -Method "GET"

# Get a list of the address objects
Invoke-WebRequest "" -WebSession $FortigateSession

# Add an address object
$SHost = @{
    "name" = "CloudFlare-1";
    "subnet" = "";
} | ConvertTo-Json -Compress

Invoke-WebRequest "" -Headers @{"Content-Type" = "application/json"; "X-CSRFTOKEN" = $CSRFTOKEN} -WebSession $FortigateSession -Method "POST" -Body $SHost -ErrorAction SilentlyContinue

Please note that while these examples covers authentication using a normal admin account the Fortigate devices also has support for dedicated REST accounts using tokens. For frequent/production integrations you’d want to look there instead.

The script I used to migrate from Sophos to Fortigate is available here.

BigipReport 4.2.0

Now with virtual server details and some bug fixes. Please note that you must update your config file too (or add the irules section added in the latest version).

Since devcentral is broken I’m posting an update here instead.

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Purging Limelight CDN items with Powershell

Taking care of the CDN can be a hassle sometimes. Unless you implement the perfect system with unique keys for every item update you will need to purge content once in a while.

We asked for some guiding from Limelight but they did not have any example for Powershell themselves so I had to translate the existing one from Perl. Hardest part was the authentication and getting the hash right but with some help from the nice people at stackoverflow it worked out in the end.

Kudos also to Limelight for having a good API documentation.

As always, if you improve it then please share it.

Contributions is always appreciated!

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