diff --git a/.gitignore b/.gitignore
index eaa9902..cde6dc8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,7 @@
+config.json
+
+# -----------------
+
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
 ##
diff --git a/Program.cs b/Program.cs
index af9baa6..bb21891 100644
--- a/Program.cs
+++ b/Program.cs
@@ -7,6 +7,7 @@ namespace FireflySR.Tool.Proxy
     {
         private const string Title = "FreeSR Proxy (Alter)";
         private const string ConfigPath = "config.json";
+        private const string ConfigTemplatePath = "config.tmpl.json";
 
         private static ProxyService s_proxyService = null!;
         
@@ -15,6 +16,7 @@ namespace FireflySR.Tool.Proxy
             Console.Title = Title;
             Console.WriteLine($"Firefly.Tool.Proxy - Credits for original FreeSR Proxy");
             CheckProxy();
+            InitConfig();
 
             var conf = JsonSerializer.Deserialize<ProxyConfig>(File.ReadAllText(ConfigPath)) ?? throw new FileLoadException("Please correctly configure config.json.");
             s_proxyService = new ProxyService(conf.DestinationHost, conf.DestinationPort, conf);
@@ -24,6 +26,14 @@ namespace FireflySR.Tool.Proxy
             Thread.Sleep(-1);
         }
 
+        private static void InitConfig()
+        {
+            if (!File.Exists(ConfigPath))
+            {
+                File.Copy(ConfigTemplatePath, ConfigPath);
+            }
+        }
+
         private static void OnProcessExit(object? sender, EventArgs args)
         {
             s_proxyService.Shutdown();
@@ -68,4 +78,4 @@ namespace FireflySR.Tool.Proxy
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/ProxyConfig.cs b/ProxyConfig.cs
index 38f0cbd..78c9663 100644
--- a/ProxyConfig.cs
+++ b/ProxyConfig.cs
@@ -5,7 +5,8 @@ public class ProxyConfig
     public List<string> RedirectDomains { get; set; } = [];
     public List<string> AlwaysIgnoreDomains { get; set; } = [];
     public List<string> ForceRedirectOnUrlContains { get; set; } = [];
+    public HashSet<string> BlockUrls { get; set; } = [];
     public required string DestinationHost { get; set; }
     public required int DestinationPort { get; set; }
     public int ProxyBindPort { get; set; }
-}
\ No newline at end of file
+}
diff --git a/ProxyService.cs b/ProxyService.cs
index 842813a..f53637c 100644
--- a/ProxyService.cs
+++ b/ProxyService.cs
@@ -3,6 +3,7 @@
     using System;
     using System.Net;
     using System.Net.Security;
+    using System.Text;
     using System.Threading.Tasks;
     using Titanium.Web.Proxy;
     using Titanium.Web.Proxy.EventArguments;
@@ -38,8 +39,11 @@
             _webProxyServer.AddEndPoint(explicitEP);
             _webProxyServer.Start();
 
-            _webProxyServer.SetAsSystemHttpProxy(explicitEP);
-            _webProxyServer.SetAsSystemHttpsProxy(explicitEP);
+            if (OperatingSystem.IsWindows())
+            {
+                _webProxyServer.SetAsSystemHttpProxy(explicitEP);
+                _webProxyServer.SetAsSystemHttpsProxy(explicitEP);
+            }
         }
 
         public void Shutdown()
@@ -74,6 +78,12 @@
             return false;
         }
 
+        private bool ShouldBlock(Uri uri)
+        {
+            var path = uri.AbsolutePath;
+            return _conf.BlockUrls.Contains(path);
+        }
+
         private Task BeforeRequest(object sender, SessionEventArgs args)
         {
             string hostname = args.HttpClient.Request.RequestUri.Host;
@@ -82,12 +92,24 @@
                 string requestUrl = args.HttpClient.Request.Url;
                 Uri local = new Uri($"http://{_targetRedirectHost}:{_targetRedirectPort}/");
 
-                string replacedUrl = new UriBuilder(requestUrl)
+                Uri builtUrl = new UriBuilder(requestUrl)
                 {
                     Scheme = local.Scheme,
                     Host = local.Host,
                     Port = local.Port
-                }.Uri.ToString();
+                }.Uri;
+
+                string replacedUrl = builtUrl.ToString();
+                if (ShouldBlock(builtUrl))
+                {
+                    Console.WriteLine($"Blocked: {replacedUrl}");
+                    args.Respond(new Titanium.Web.Proxy.Http.Response(Encoding.UTF8.GetBytes("Fuck off"))
+                        {
+                            StatusCode = 404,
+                            StatusDescription = "Oh no!!!",
+                        }, true);
+                    return Task.CompletedTask;
+                }
 
                 Console.WriteLine("Redirecting: " + replacedUrl);
                 args.HttpClient.Request.Url = replacedUrl;
diff --git a/config.json b/config.tmpl.json
similarity index 70%
rename from config.json
rename to config.tmpl.json
index c42560a..c14dfbd 100644
--- a/config.json
+++ b/config.tmpl.json
@@ -10,6 +10,7 @@
     ".juequling.com",
     ".zenlesszonezero.com",
     ".bh3.com",
+    ".honkaiimpact3.com",
     ".mob.com",
     ".hyg.com"
   ],
@@ -21,10 +22,21 @@
     "autopatchcn.bhsr.com",
     "autopatchos.starrails.com"
   ],
+  "BlockUrls": [
+    "/sdk/upload",
+    "/sdk/dataUpload",
+    "/common/h5log/log/batch",
+    "/crash/dataUpload",
+    "/crashdump/dataUpload",
+    "/client/event/dataUpload",
+    "/log",
+    "/asm/dataUpload",
+    "/sophon/dataUpload"
+  ],
   "ForceRedirectOnUrlContains": [
     "query_dispatch",
     "query_gateway",
     "query_region_list",
     "query_cur_region"
   ]
-}
\ No newline at end of file
+}