IIS InstallationThe column introduces how to use the IIS API to disable IP access

Free recommendations: IIS installation

This class is a simple package based on Microsoft.Web.Administration:
PS: Microsoft.Web.Administration Can be searched and installed through Nuget.

public?class?IISAdministration
{
????private?readonly?ServerManager?serverManager;
????public?IISAdministration()
????{
????????serverManager?=?new?ServerManager();
????}

????public?IEnumerable<WorkerProcess>?GetWorkerProcesses()
????{
????????return?serverManager.WorkerProcesses;
????}

????public?IEnumerable<string>?GetSiteNames()
????{
????????foreach?(var?item?in?GetWorkerProcesses())
????????{
????????????yield?return?item.AppPoolName;
????????}
????}

????public?ConfigurationElementCollection?GetIpSecurityCollection(string?site)
????{
????????return?GetConfigurationElementCollection("system.webServer/security/ipSecurity",?site);
????}

????public?ConfigurationElementCollection?GetConfigurationElementCollection(string?sectionName,?string?site?=?"")
????{
????????var?config?=?serverManager.GetApplicationHostConfiguration();
????????ConfigurationSection?section;
????????if?(string.IsNullOrWhiteSpace(site))
????????{
????????????section?=?config.GetSection(sectionName);
????????}
????????else
????????{
????????????section?=?config.GetSection(sectionName,?site);
????????}
????????return?section.GetCollection();
????}

????public?void?CreateElement(ConfigurationElementCollection?section,?ConfigurationElement?element)
????{
????????section.Add(element);
????????serverManager.CommitChanges();
????}

????public?void?RemoveElement(ConfigurationElementCollection?section,?ConfigurationElement?element)
????{
????????section.Remove(element);
????????serverManager.CommitChanges();
????}

????public?bool?HasBlocked(string?siteName,?string?ip)
????{
????????var?ipSecurityCollection?=?this.GetIpSecurityCollection(siteName);
????????for?(int?i?=?0;?i?<?ipSecurityCollection.Count;?i++)
????????{
????????????var?element?=?ipSecurityCollection[i];
????????????if?((string)element["ipAddress"]?==?ip)
????????????{
????????????????return?true;
????????????}
????????}
????????return?false;
????}

????public?void?FreeIP(string?siteName,?string?ip)
????{
????????if?(!HasBlocked(siteName,?ip))
????????{
????????????return;
????????}
????????var?ipSecurityCollection?=?this.GetIpSecurityCollection(siteName);
????????for?(int?i?=?0;?i?<?ipSecurityCollection.Count;?i++)
????????{
????????????var?element?=?ipSecurityCollection[i];
????????????if?((string)element["ipAddress"]?==?ip)
????????????{
????????????????this.RemoveElement(ipSecurityCollection,?element);
????????????????break;
????????????}
????????}
????}

????public?void?BlockIP(string?siteName,?string?ip)
????{
????????if?(HasBlocked(siteName,?ip))
????????{
????????????return;
????????}
????????var?ipSecurityCollection?=?this.GetIpSecurityCollection(siteName);
????????var?element?=?ipSecurityCollection.CreateElement("add");
????????element["ipAddress"]?=?ip;
????????element["allowed"]?=?false;

????????ipSecurityCollection.Add(element);
????????serverManager.CommitChanges();
????}
}

Usage:

var?iisAdministration?=?new?IISAdministration();
iisAdministration.BlockIP("",?"192.0.0.1");

Note:

1. BlockIPThe first parameter is the site name. If it is an empty string, it will be used directly. Add to the IP mask under the root path of IIS.
2. This method will throw an exception and requires administrator privileges to execute.

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