diff --git a/.gitignore b/.gitignore
index 0d18f04..682f224 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 example
-exec
\ No newline at end of file
+exec
+test/*.o
\ No newline at end of file
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index 05054c5..28e311b 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -7,9 +7,11 @@
             "args": [
                 "-fdiagnostics-color=always",
                 "-g",
-                "${file}",
+                "${fileDirname}/test.cpp",
+				"${fileDirname}/../src/*.cpp",
+                "${fileDirname}/../exec/src/*.cpp",
                 "-o",
-                "${fileDirname}/${fileBasenameNoExtension}"
+                "${fileDirname}/test.o"
             ],
             "options": {
                 "cwd": "${fileDirname}"
diff --git a/lib/ipban.hpp b/lib/ipban.hpp
index fca01ad..65e1a45 100644
--- a/lib/ipban.hpp
+++ b/lib/ipban.hpp
@@ -3,6 +3,7 @@
 
 #include <iostream>
 #include <vector>
+#include <map>
 #include <string>
 #include <future>
 #include <mutex>
@@ -29,16 +30,27 @@ struct _ban {
     time_t _time;
 };
 
+/**
+ * Pomoćna struktura - za praćenje broja pogrešaka
+*/
+struct _fail {
+    time_t first_fail;
+    uint n_fails = 0;
+};
+
 /**
  * Biblioteka za ban IP adrese kroz UFW vatrozid na određeno vrijeme
  * Automatski uklanja zabranu po isteku vremena
  * Posjeduje vlastiti DB mehanizam za zaštitu od nepovratnog ban-a
 */
 class ipban {
-    mutex io;
+    mutex io, f_io;
     time_t ban_duration;
+    uint fail_interval;
+    uint fail_limit;
     string db_file;
     vector<_ban> banned;
+    map<string, struct _fail> failed;
     future<void> unban_bot;
     bool run_unban_bot = true;
     // interface možda bude trebao za ban
@@ -71,10 +83,11 @@ class ipban {
     public:
 
     /**
-     * Konstruktor, prima zadanu vrijednost trajanja ban-a u minutama
+     * Konstruktor, prima zadanu vrijednost trajanja ban-a u minutama, 
+     * vrijeme praćenja pogreške adrese, broj dozvoljenih pogreški
      * i putanju datoteke baze podataka
     */
-    ipban(const uint& _duration, const string& db_file = "ipban.db");    // u minutama?
+    ipban(const uint& _duration, const uint& _fail_interval = 30, const uint& _fail_limit = 3, const string& db_file = "ipban.db");    // u minutama?
 
     /**
      * Metoda koja banuje proslijeđenu IP adresu, dodaje je u vector banned, ažurira bazu
@@ -82,6 +95,19 @@ class ipban {
     */
     bool ban(const string& ip);
 
+    /**
+     * Inkrementalno povećaj broj grešaka za prosljeđenu adresu
+     * ako se prekorači broj dozvoljenih grešaka u intervalu - adresa se banuje
+    */
+
+    void fail(const string& ip);
+
+    /**
+     * Uklanja greške za prosljeđenu adresu
+    */
+
+    bool unfail(const string& ip);
+
     /**
      * Destruktor, uklanja sve zabrane.
     */
diff --git a/src/ipban.cpp b/src/ipban.cpp
index ff745c8..113f62d 100644
--- a/src/ipban.cpp
+++ b/src/ipban.cpp
@@ -1,7 +1,9 @@
 #include "../lib/ipban.hpp"
 
-marcelb::ipban::ipban(const uint& _duration, const string& _db_file) {
+marcelb::ipban::ipban(const uint& _duration, const uint& _fail_interval, const uint& _fail_limit, const string& _db_file) {
     ban_duration = _duration*60;
+    fail_interval = _fail_interval*60;
+    fail_limit = _fail_limit;
     db_file = _db_file;
     load_db();
 
@@ -13,6 +15,15 @@ marcelb::ipban::ipban(const uint& _duration, const string& _db_file) {
                     unban(banned.begin() + i);
                 }
             }
+            for (auto _failed = failed.begin(); _failed != failed.end(); ) {
+                if (difftime(time(NULL), _failed->second.first_fail) >= fail_interval && _failed != failed.end()) {
+                    f_io.lock();
+                    _failed = failed.erase(_failed);
+                    f_io.unlock();
+                } else {
+                    ++_failed;
+                }
+            }
         }
         return;
     });
@@ -106,6 +117,25 @@ bool marcelb::ipban::ufw_unban(const string& ip) {
     return false;
 }
 
+
+void marcelb::ipban::fail(const string& ip) {
+    lock_guard<mutex> _io(f_io);
+    if (failed[ip].n_fails == 0) {
+        failed[ip].n_fails = 1;
+        failed[ip].first_fail = time(NULL);
+    } else if (++failed[ip].n_fails >= fail_limit) {
+        ban(ip);
+        failed.erase(ip);
+    }
+}
+
+
+bool marcelb::ipban::unfail(const string& ip) {
+    lock_guard<mutex> _io(f_io);
+    return failed.erase(ip);;
+}
+
+
 static void marcelb::sleep_if(const uint& _time, const bool& _condition) {
     time_t start_time = time(NULL);
     do {
diff --git a/test/ipban.db b/test/ipban.db
index e150c3a..e69de29 100644
--- a/test/ipban.db
+++ b/test/ipban.db
@@ -1 +0,0 @@
-90.163.88.49-1702323353
diff --git a/test/test b/test/test
index 885e984..16cd707 100755
Binary files a/test/test and b/test/test differ
diff --git a/test/test.cpp b/test/test.cpp
index 7ff08f9..05e3be0 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -23,15 +23,32 @@ int main() {
     ipban myban(1);
     // myban.ban("192.168.2.74");
     // sleep(300);
-    uint i=0;
-
-    while (i<10) {
-        string ip = generateRandomIP();
-        cout << "Ban " << ip << endl;
-        myban.ban(ip);
-        sleep(30);
-        i++;
-    }
+    // uint i=0;
+
+    // while (i<10) {
+    //     string ip = generateRandomIP();
+    //     cout << "Ban " << ip << endl;
+    //     myban.ban(ip);
+    //     sleep(30);
+    //     i++;
+    // }
+
+
+    myban.fail("192.168.2.74");
+    sleep(2);
+    myban.fail("192.168.2.74");
+    sleep(200);
+    // myban.fail("192.168.2.74");
+    // sleep(120);
+
+    // myban.unfail("192.168.2.74");
+    // sleep(2);
+    // myban.fail("192.168.2.74");
+    // sleep(120);
+
+
+
+
 
     return 0;
 }
\ No newline at end of file