internal void AddRule(WinFWRule NewRule)
{
this.AllRules.Add(NewRule);
foreach (string P in NewRule.RemotePorts)
{
if (!RulesByPort.ContainsKey(P))
{
RulesByPort[P] = new List <IWinFWRule>();
}
RulesByPort[P].Add(NewRule);
}
}
private static IWindowsFirewall WinFwScan()
/*
* Windows Firewall information can be found using the INetFwMgr interface in the NetFwTypeLib namespace.
* The firewall manager object, HNetCfg.FwMgr, is a COM object; type is retrieved at runtime and instantiated
* using Activator.CreateInstance()
*/
/* Each firewall rule in the Windows Firewall has associated remote ports.
* This subroutine handles retrieving them, and storing them in the WinFW object in the
* scan result. The WinFW object has a RulesByPort dict that allows looking up
* what rules are associated with any given port (i.e. GetRulesByPort(string PortNumber))
* See the ConsoleApp in this solution for a usage example.
*
* The RemotePorts property in INetFwRule is just a string; it has comma-separated ports,
* some actually using alphabetical names instead of numbers. This gets pulled out into
* a list of strings, so that a program using ports 80 and 443 can be found via
* GetRulesByPort("80") or GetRulesByPort("443")
*/
{
WindowsFirewall WinFW = new WindowsFirewall();
//Instantiate Firewall Manager object and get current profile
Type tNetFirewall = Type.GetTypeFromProgID("HNetCfg.FwMgr", false);
INetFwMgr FwMgr = (INetFwMgr)Activator.CreateInstance(tNetFirewall);
INetFwProfile FwProfile = FwMgr.LocalPolicy.CurrentProfile;
// Populate basic properties
WinFW.Enabled = FwProfile.FirewallEnabled;
WinFW.GloballyOpenPorts = new List <int>();
foreach (int p in FwProfile.GloballyOpenPorts)
{
WinFW.GloballyOpenPorts.Add(p);
}
//Get Rule objects
Type tFwPolicy = Type.GetTypeFromProgID("HNetCfg.FwPolicy2", false);
INetFwPolicy2 FwPolicy = (INetFwPolicy2)Activator.CreateInstance(tFwPolicy);
INetFwRules FwRules = FwPolicy.Rules;
// Create a new rule for each rule object, pass it to the AddRule method of the
// WinFW object
foreach (INetFwRule Rule in FwRules)
{
WinFWRule R = new WinFWRule();
R.Name = Rule.Name;
R.Description = Rule.Description;
R.ApplicationName = Rule.ApplicationName;
R.ServiceName = Rule.serviceName;
R.Enabled = Rule.Enabled;
R.RemotePorts = new List <string>();
if (Rule.RemotePorts != null)
{
//Separate by commas
R.RemotePorts.AddRange(Rule.RemotePorts.Split(','));
}
WinFW.AddRule(R);
}
return(WinFW);
}
