如何检查防火墙规则是否存在

Question

我有一个按钮，一旦点击，它就会向防火墙添加一个新规则。但问题是它可以被多次点击并且会添加很多规则。

如何检查防火墙中是否存在规则？（或者是否可以检查规则？）

这是我添加规则的代码：

ProcessStartInfo run = new ProcessStartInfo();
run.FileName = "cmd.exe";
run.Verb = "runas";
run.Arguments = "/C netsh advfirewall firewall add rule name=\"Block IP Rule\" dir=in interface=any action=block remoteip=x.x.x.x";
run.WindowStyle = ProcessWindowStyle.Hidden;
Process.Start(run);

Answer 1

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

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

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

作品... :}