diff --git a/nginx.conf b/nginx.conf
index 2248feb..d20b3ea 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -27,12 +27,18 @@ http {
     server_tokens off;
     charset utf-8;
 
+    map $server_protocol $h1_addr {
+        default "";
+        "HTTP/1.0" $binary_remote_addr;
+        "HTTP/1.1" $binary_remote_addr;
+    }
+
     limit_conn_status 444;
     limit_conn_zone $binary_remote_addr zone=addr_conn:10m;
-    limit_conn_zone $binary_remote_addr zone=h1_conn:10m;
+    limit_conn_zone $h1_addr zone=h1_conn:10m;
     limit_req_status 444;
     limit_req_zone $binary_remote_addr zone=addr_req:10m rate=100r/s;
-    limit_req_zone $binary_remote_addr zone=h1_req:10m rate=10r/m;
+    limit_req_zone $h1_addr zone=h1_req:10m rate=10r/m;
 
     types {
         text/html html;
@@ -52,12 +58,12 @@ http {
         listen 80;
         server_name ismist.cn localhost;
 
+        limit_conn h1_conn 10;
+        limit_req zone=h1_req burst=5 nodelay;
+
         limit_conn addr_conn 100;
         limit_req zone=addr_req burst=20 nodelay;
 
-        limit_conn h1_conn 5;
-        limit_req zone=h1_req burst=10 nodelay;
-
         root ui;
 
         location = / {
diff --git a/nginx.ssl.conf b/nginx.ssl.conf
index 9f49deb..72c66fb 100644
--- a/nginx.ssl.conf
+++ b/nginx.ssl.conf
@@ -27,12 +27,21 @@ http {
     server_tokens off;
     charset utf-8;
 
+    map $server_protocol $h1_addr {
+        default "";
+        "HTTP/1.0" $binary_remote_addr;
+        "HTTP/1.1" $binary_remote_addr;
+    }
+
     limit_conn_status 444;
     limit_conn_zone $binary_remote_addr zone=addr_conn:10m;
-    limit_conn_zone $binary_remote_addr zone=h1_conn:10m;
+    limit_conn_zone $h1_addr zone=h1_conn:10m;
     limit_req_status 444;
     limit_req_zone $binary_remote_addr zone=addr_req:10m rate=100r/s;
-    limit_req_zone $binary_remote_addr zone=h1_req:10m rate=10r/m;
+    limit_req_zone $h1_addr zone=h1_req:10m rate=10r/m;
+
+    limit_conn h1_conn 10;
+    limit_req zone=h1_req burst=5 nodelay;
 
     types {
         text/html html;
@@ -51,10 +60,8 @@ http {
     server {
         listen 80;
         listen [::]:80;
-        server_name ismist.cn;
 
-        limit_conn h1_conn 5;
-        limit_req zone=h1_req burst=10 nodelay;
+        server_name ismist.cn;
 
         location / {
             return 301 https://$host$request_uri;