diff --git a/src/db/ClientManagerLogin.cpp b/src/db/ClientManagerLogin.cpp
index d0f1186..f352ba8 100644
--- a/src/db/ClientManagerLogin.cpp
+++ b/src/db/ClientManagerLogin.cpp
@@ -80,24 +80,6 @@ bool CClientManager::FindLogonAccount(const char * c_pszLogin)
 
 void CClientManager::QUERY_LOGIN_BY_KEY(CPeer * pkPeer, DWORD dwHandle, TPacketGDLoginByKey * p)
 {
-#ifdef ENABLE_LIMIT_TIME
-	static int s_updateCount = 0;
-	static int s_curTime = time(0);
-	if (s_updateCount > 100)
-	{
-		s_curTime = time(0);
-		s_updateCount = 0;
-	}
-	++s_updateCount;
-
-	if (s_curTime >= GLOBAL_LIMIT_TIME)
-	{
-		sys_err("Server life time expired.");
-		exit(0);
-		return;
-	}
-#endif
-
 	CLoginData * pkLoginData = GetLoginData(p->dwLoginKey);
 	char szLogin[LOGIN_MAX_LEN + 1];
 	trim_and_lower(p->szLogin, szLogin, sizeof(szLogin));
diff --git a/src/game/char_manager.cpp b/src/game/char_manager.cpp
index aaf6e54..10f2401 100644
--- a/src/game/char_manager.cpp
+++ b/src/game/char_manager.cpp
@@ -692,15 +692,6 @@ void CHARACTER_MANAGER::Update(int iPulse)
 		for (itertype(m_map_dwMobKillCount) it = m_map_dwMobKillCount.begin(); it != m_map_dwMobKillCount.end(); ++it)
 			DBManager::instance().SendMoneyLog(MONEY_LOG_MONSTER_KILL, it->first, it->second);
 
-#ifdef _USE_SERVER_KEY_
-		extern bool Metin2Server_IsInvalid();
-		extern bool g_bShutdown;
-		if (Metin2Server_IsInvalid())
-		{
-			g_bShutdown = true;
-		}
-#endif
-
 		m_map_dwMobKillCount.clear();
 	}
 
diff --git a/src/game/desc.cpp b/src/game/desc.cpp
index ac3b5b9..391f6ea 100644
--- a/src/game/desc.cpp
+++ b/src/game/desc.cpp
@@ -192,16 +192,6 @@ EVENTFUNC(ping_event)
 		desc->SetPong(false);
 	}
 
-#ifdef ENABLE_LIMIT_TIME
-	if ((unsigned)get_global_time() >= GLOBAL_LIMIT_TIME)
-	{
-		extern void ClearAdminPages();
-		ClearAdminPages();
-		extern g_bShutdown;
-		g_bShutdown = true;
-	}
-#endif
-
 	desc->SendHandshake(get_dword_time(), 0);
 
 	return (ping_event_second_cycle);
diff --git a/src/game/input.cpp b/src/game/input.cpp
index 9773e30..1b5908a 100644
--- a/src/game/input.cpp
+++ b/src/game/input.cpp
@@ -18,10 +18,6 @@
 #include "castle.h"
 #include "dev_log.h"
 
-#ifndef OS_WINDOWS
-	#include "limit_time.h"
-#endif
-
 extern time_t get_global_time();
 
 bool IsEmptyAdminPage()
@@ -39,14 +35,6 @@ bool IsAdminPage(const char * ip)
 	return 0;
 }
 
-void ClearAdminPages()
-{
-	for (size_t n = 0; n < g_stAdminPageIP.size(); ++n)
-		g_stAdminPageIP[n].clear();
-
-	g_stAdminPageIP.clear();
-}
-
 CInputProcessor::CInputProcessor() : m_pPacketInfo(NULL), m_iBufferLeft(0)
 {
 	if (!m_pPacketInfo)
@@ -174,17 +162,6 @@ bool CInputProcessor::Process(LPDESC lpDesc, const void * c_pvOrig, int iBytes,
 void CInputProcessor::Pong(LPDESC d)
 {
 	d->SetPong(true);
-
-	extern bool Metin2Server_IsInvalid();
-
-#ifdef ENABLE_LIMIT_TIME
-	if (Metin2Server_IsInvalid())
-	{
-		extern bool g_bShutdown;
-		g_bShutdown = true;
-		ClearAdminPages();
-	}
-#endif
 }
 
 void CInputProcessor::Handshake(LPDESC d, const char * c_pData)
diff --git a/src/game/input_auth.cpp b/src/game/input_auth.cpp
index d3e2c71..3b628b9 100644
--- a/src/game/input_auth.cpp
+++ b/src/game/input_auth.cpp
@@ -10,10 +10,6 @@
 #include "auth_brazil.h"
 #include "db.h"
 
-#ifndef OS_WINDOWS
-	#include "limit_time.h"
-#endif
-
 extern time_t get_global_time();
 
 bool FN_IS_VALID_LOGIN_STRING(const char *str)
@@ -107,17 +103,6 @@ CInputAuth::CInputAuth()
 
 void CInputAuth::Login(LPDESC d, const char * c_pData)
 {
-	extern bool Metin2Server_IsInvalid();
-
-#ifdef ENABLE_LIMIT_TIME
-	if (Metin2Server_IsInvalid())
-	{
-		extern void ClearAdminPages();
-		ClearAdminPages();
-		exit(1);
-		return;
-	}
-#endif
 	TPacketCGLogin3 * pinfo = (TPacketCGLogin3 *) c_pData;
 
 	if (!g_bAuthServer)
diff --git a/src/game/limit_time.h b/src/game/limit_time.h
deleted file mode 100644
index 68f684e..0000000
--- a/src/game/limit_time.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef __LIMIT_TIME__
-#define __LIMIT_TIME__
-
-// #define ENABLE_LIMIT_TIME
-#define GLOBAL_LIMIT_TIME 1684265966UL // Tue May 16 21:39:26 2023
-#define TIME_OVER_PONG_DOWN_RATE 	50000
-#define TIME_OVER_LOGIN_DOWN_RATE 	10000
-#endif
diff --git a/src/game/main.cpp b/src/game/main.cpp
index 5004c0f..6ab5a09 100644
--- a/src/game/main.cpp
+++ b/src/game/main.cpp
@@ -59,9 +59,6 @@
 #include "skill_power.h"
 #include "SpeedServer.h"
 #include "DragonSoul.h"
-#ifndef OS_WINDOWS
-	#include "limit_time.h"
-#endif
 
 // #ifndef OS_WINDOWS
 // #include <gtest/gtest.h>
@@ -71,11 +68,6 @@
 #include <execinfo.h>
 #endif
 
-// 윈도우에서 테스트할 때는 항상 서버키 체크
-#ifdef _WIN32
-	//#define _USE_SERVER_KEY_
-#endif
-
 extern void WriteVersion();
 //extern const char * _malloc_options;
 #if defined(OS_FREEBSD) && defined(DEBUG_ALLOC)
@@ -231,13 +223,6 @@ void heartbeat(LPHEART ht, int pulse)
 	// 1초마다
 	if (!(pulse % ht->passes_per_sec))
 	{
-#ifdef ENABLE_LIMIT_TIME
-		if ((unsigned)get_global_time() >= GLOBAL_LIMIT_TIME)
-		{
-			g_bShutdown = true;
-		}
-#endif
-
 		if (g_bAuthServer && LC_IsBrazil() && !test_server)
 			auth_brazil_log();
 
@@ -325,87 +310,6 @@ void heartbeat(LPHEART ht, int pulse)
 	}
 }
 
-static bool g_isInvalidServer = false;
-
-bool Metin2Server_IsInvalid()
-{
-	return g_isInvalidServer;
-}
-
-void Metin2Server_Check()
-{
-#ifdef _SERVER_CHECK_
-
-#ifdef _USE_SERVER_KEY_
-	if (false == CheckServer::CheckIp(g_szPublicIP))
-	{
-#ifdef _WIN32
-		fprintf(stderr, "check ip failed\n");
-#endif
-		g_isInvalidServer = true;
-	}
-	return;
-#endif
-
-	if (LC_IsEurope() || test_server)
-		return;
-
-
-	// 브라질 ip
-	if (strncmp (g_szPublicIP, "189.112.1", 9) == 0)
-	{
-		return;
-	}
-
-	// 캐나다 ip
-	if (strncmp (g_szPublicIP, "74.200.6", 8) == 0)
-	{
-		return;
-	}
-
-	return;
-
-	static const size_t CheckServerListSize = 1;
-	static const char* CheckServerList[] = { "202.31.178.251"};
-	static const int CheckServerPort = 7120;
-
-	socket_t sockConnector = INVALID_SOCKET;
-
-	for (size_t i = 0 ; i < CheckServerListSize ; i++)
-	{
-		sockConnector = socket_connect( CheckServerList[i], CheckServerPort );
-
-		if (0 < sockConnector)
-			break;
-	}
-
-	if (0 > sockConnector)
-	{
-		if (true != LC_IsEurope()) // 유럽은 접속을 하지 못하면 인증된 것으로 간주
-			g_isInvalidServer = true;
-
-		return;
-	}
-
-	char buf[256] = { 0, };
-
-	socket_read(sockConnector, buf, sizeof(buf) - 1);
-
-	sys_log(0, "recv[%s]", buf);
-	
-	if (strncmp(buf, "OK", 2) == 0)
-		g_isInvalidServer = false;
-	else if (strncmp(buf, "CK", 2) == 0)
-		g_isInvalidServer = true;
-
-	socket_close(sockConnector);
-#else
-	g_isInvalidServer = false;
-	return;
-#endif
-	
-}
-
 static void CleanUpForEarlyExit() {
 	CancelReloadSpamEvent();
 }
@@ -504,15 +408,6 @@ int main(int argc, char **argv)
 	ani_init();
 	PanamaLoad();
 
-	Metin2Server_Check();
-
-#if defined(_WIN32) && defined(_USE_SERVER_KEY_)
-	if (CheckServer::IsFail())
-	{
-		return 1;
-	}
-#endif
-
 	if ( g_bTrafficProfileOn )
 		TrafficProfiler::instance().Initialize( TRAFFIC_PROFILE_FLUSH_CYCLE, "ProfileLog" );
 
@@ -615,12 +510,6 @@ int start(int argc, char **argv)
 #if defined(OS_FREEBSD) && defined(DEBUG_ALLOC)
 	_malloc_message = WriteMallocMessage;
 #endif
-#ifdef ENABLE_LIMIT_TIME
-	if ((unsigned)get_global_time() >= GLOBAL_LIMIT_TIME)
-	{
-		return 0;
-	}
-#endif
 
 	char optstring[] = "npverltI";
 	while ((ch = getopt(argc, argv, optstring)) != -1)
@@ -855,12 +744,6 @@ int idle()
 		memset(&thecore_profiler[0], 0, sizeof(thecore_profiler));
 		memset(&s_dwProfiler[0], 0, sizeof(s_dwProfiler));
 	}
-#ifdef _USE_SERVER_KEY_
-	if (Metin2Server_IsInvalid() && 0 == (thecore_random() % 7146))
-	{
-		return 0; // shutdown
-	}
-#endif
 
 #ifdef OS_WINDOWS
 	if (_kbhit()) {