Is there any .NET API to get all the firewall rules

c#

Solution

Search the Firewall rules using a rule Name and remove it:

public static void RemoveFirewallRules(string RuleName)
{
    try
    {
        Type tNetFwPolicy2 = Type.GetTypeFromProgID("HNetCfg.FwPolicy2");
        INetFwPolicy2 fwPolicy2 = (INetFwPolicy2)Activator.CreateInstance(tNetFwPolicy2);
        var currentProfiles = fwPolicy2.CurrentProfileTypes;               

        // List of rules
        // List<INetFwRule> RuleList = new List<INetFwRule>();

        foreach (INetFwRule rule in fwPolicy2.Rules)
        {
            // Add a rule to list
            // RuleList.Add(rule);
            // Console.WriteLine(rule.Name);
            if (rule.Name.IndexOf(RuleName) != -1)
            {
                // Remove a rule
                INetFwPolicy2 firewallPolicy = (INetFwPolicy2)Activator.CreateInstance(Type.GetTypeFromProgID("HNetCfg.FwPolicy2"));                     
                firewallPolicy.Rules.Remove(rule.Name);
                Console.WriteLine(rule.Name + " has been deleted from the Firewall Policy");
            }
        }
    }
    catch (Exception r)
    {
        Console.WriteLine("Error deleting a Firewall rule");
    }
}

Problem

We have an application which add some rules to firewall. We need to retrieve the rules of firewall so that we can check whether the rule exists in the firewall. I am using C#.

Original source