functions/Update-FMFirewallPolicy.ps1

function Update-FMFirewallPolicy {
    <#
    .SYNOPSIS
    Adds new firewall policies to the given ADOM and policy package.
 
    .DESCRIPTION
    Adds new firewall policies to the given ADOM and policy package.
 
    .PARAMETER Connection
    The API connection object.
 
    .PARAMETER ADOM
    The (non-default) ADOM for the requests.
 
    .PARAMETER Package
    The name of the policy package
 
    .PARAMETER Policy
    The new policy, generated e.g. by using New-FMObjAddress
 
    .PARAMETER Overwrite
    If used and an policy with the given name already exists the data will be overwritten.
 
    .EXAMPLE
    #To Be Provided
 
    Later
    .NOTES
    General notes
    #>

    param (
        [parameter(Mandatory=$false)]
        $Connection = (Get-FMLastConnection),
        [string]$ADOM,
        [parameter(mandatory = $true, ParameterSetName = "default")]
        [string]$Package,
        [parameter(mandatory = $true, ValueFromPipeline = $true, ParameterSetName = "default")]
        [object[]]$Policy,
        [bool]$EnableException = $true
    )
    begin {
        $policyList = @()
        $explicitADOM = Resolve-FMAdom -Connection $Connection -Adom $ADOM
        Write-PSFMessage "`$explicitADOM=$explicitADOM"
    }
    process {
        $Policy | ForEach-Object {
            $policyList += $_ | ConvertTo-PSFHashtable -Include @(
                # "_policy_block"
                "action"
                "anti-replay"
                "application-list"
                "auth-cert"
                "auth-path"
                "auth-redirect-addr"
                "auto-asic-offload"
                "av-profile"
                "block-notification"
                "captive-portal-exempt"
                "capture-packet"
                "cifs-profile"
                "comments"
                "custom-log-fields"
                "decrypted-traffic-mirror"
                "delay-tcp-npu-session"
                "diffserv-forward"
                "diffserv-reverse"
                "diffservcode-forward"
                "diffservcode-rev"
                "disclaimer"
                "dlp-profile"
                "dnsfilter-profile"
                "dsri"
                "dstaddr"
                "dstaddr-negate"
                "dstaddr6"
                "dstintf"
                "dynamic-shaping"
                "email-collect"
                "emailfilter-profile"
                "fec"
                "file-filter-profile"
                "firewall-session-dirty"
                "fixedport"
                "fsso-agent-for-ntlm"
                "fsso-groups"
                "geoip-anycast"
                "geoip-match"
                "global-label"
                "groups"
                "gtp-profile"
                "http-policy-redirect"
                "icap-profile"
                "identity-based-route"
                "inbound"
                "inspection-mode"
                "internet-service"
                "internet-service-custom"
                "internet-service-custom-group"
                "internet-service-group"
                "internet-service-name"
                "internet-service-negate"
                "internet-service-src"
                "internet-service-src-custom"
                "internet-service-src-custom-group"
                "internet-service-src-group"
                "internet-service-src-name"
                "internet-service-src-negate"
                "ippool"
                "ips-sensor"
                "label"
                "logtraffic"
                "logtraffic-start"
                "match-vip"
                "match-vip-only"
                "name"
                "nat"
                "nat46"
                "nat64"
                "natinbound"
                "natip"
                "natoutbound"
                "np-acceleration"
                "ntlm"
                "ntlm-enabled-browsers"
                "ntlm-guest"
                "outbound"
                "passive-wan-health-measurement"
                "per-ip-shaper"
                "permit-any-host"
                "permit-stun-host"
                "pfcp-profile"
                "policy-expiry"
                "policy-expiry-date"
                "policyid"
                "poolname"
                "poolname6"
                "profile-group"
                "profile-protocol-options"
                "profile-type"
                "radius-mac-auth-bypass"
                "redirect-url"
                "replacemsg-override-group"
                "reputation-direction"
                "reputation-minimum"
                "rtp-addr"
                "rtp-nat"
                "schedule"
                "schedule-timeout"
                "sctp-filter-profile"
                "scope member"
                "send-deny-packet"
                "service"
                "service-negate"
                "session-ttl"
                "sgt"
                "sgt-check"
                "src-vendor-mac"
                "srcaddr"
                "srcaddr-negate"
                "srcaddr6"
                "srcintf"
                "ssh-filter-profile"
                "ssh-policy-redirect"
                "ssl-ssh-profile"
                "status"
                "tcp-mss-receiver"
                "tcp-mss-sender"
                "tcp-session-without-syn"
                "timeout-send-rst"
                "tos"
                "tos-mask"
                "tos-negate"
                "traffic-shaper"
                "traffic-shaper-reverse"
                "users"
                "utm-status"
                "uuid"
                "videofilter-profile"
                "vlan-cos-fwd"
                "vlan-cos-rev"
                "vlan-filter"
                "voip-profile"
                "vpntunnel"
                "waf-profile"
                "wanopt"
                "wanopt-detection"
                "wanopt-passive-opt"
                "wanopt-peer"
                "wanopt-profile"
                "wccp"
                "webcache"
                "webcache-https"
                "webfilter-profile"
                "webproxy-forward-server"
                "webproxy-profile"
                "ztna-ems-tag"
                "ztna-geo-tag"
                "ztna-status"
            )
        }
    }
    end {
        $apiCallParameter = @{
            EnableException     = $EnableException
            Connection          = $Connection
            LoggingAction       = "Update-FMFirewallPolicy"
            LoggingActionValues = @($policyList.count, $explicitADOM, $Package)
            method              = "update"
            Path                = "/pm/config/adom/$explicitADOM/pkg/$Package/firewall/policy"
            Parameter           = @{
                "data" = $policyList
            }
        }
        $result = Invoke-FMAPI @apiCallParameter
        if (-not $EnableException) {
            return ($null -ne $result)
        }
    }
}