diff --git a/config.lua b/config.lua
index 6e66ce6..2f7144b 100644
--- a/config.lua
+++ b/config.lua
@@ -5,6 +5,7 @@ UrlDeny="on"
 Redirect="on"
 CookieMatch="on"
 postMatch="on" 
+WhiteServerName="on"
 whiteModule="on" 
 black_fileExt={"php","jsp"}
 ipWhitelist={"127.0.0.1"}
diff --git a/init.lua b/init.lua
index eb44bf0..6807e27 100644
--- a/init.lua
+++ b/init.lua
@@ -10,10 +10,13 @@ UrlDeny = optionIsOn(UrlDeny)
 PostCheck = optionIsOn(postMatch)
 CookieCheck = optionIsOn(cookieMatch)
 WhiteCheck = optionIsOn(whiteModule)
+WhiteServerName = optionIsOn(WhiteServerName)
 PathInfoFix = optionIsOn(PathInfoFix)
 attacklog = optionIsOn(attacklog)
 CCDeny = optionIsOn(CCDeny)
 Redirect=optionIsOn(Redirect)
+
+
 function getClientIp()
         IP = ngx.req.get_headers()["X-Real-IP"]
         if IP == nil then
@@ -64,9 +67,14 @@ urlrules=read_rule('url')
 argsrules=read_rule('args')
 uarules=read_rule('user-agent')
 wturlrules=read_rule('whiteurl')
+white_servername_list = read_rule('white_servername')
 postrules=read_rule('post')
 ckrules=read_rule('cookie')
 
+function debug(info)
+    write("/var/log/nginx/waf/debug.log", info)
+end
+    
 
 function say_html()
     if Redirect then
@@ -89,6 +97,30 @@ function whiteurl()
     end
     return false
 end
+
+
+
+function white_servername()
+    debug("white servername")
+    if 1==1 then
+    	host = ngx.req.get_headers()["Host"]
+    	if host == nil then
+            debug("nil host")
+    	    return false;
+        end
+        debug(host)
+    	if white_servername_list ~= nil then
+    	    for _, rule in pairs(white_servername_list) do
+    	    	if ngxmatch(host, rule, "isjo") then
+    	    	    return true
+    	    	end
+            end
+        end
+        return false
+    end
+end
+
+
 function fileExtCheck(ext)
     local items = Set(black_fileExt)
     ext=string.lower(ext)
diff --git a/waf.lua b/waf.lua
index a6e5fdc..bd22f19 100644
--- a/waf.lua
+++ b/waf.lua
@@ -8,6 +8,7 @@ elseif ngx.var.http_Acunetix_Aspect then
 elseif ngx.var.http_X_Scan_Memo then
     ngx.exit(444)
 elseif whiteurl() then
+elseif white_servername() then
 elseif ua() then
 elseif url() then
 elseif args() then
diff --git a/wafconf/url b/wafconf/url
index 31130d3..a48a430 100644
--- a/wafconf/url
+++ b/wafconf/url
@@ -1,4 +1,4 @@
-\.(svn|htaccess|bash_history)
+\.(svn|git|htaccess|bash_history)
 \.(bak|inc|old|mdb|sql|backup|java|class)$
 (vhost|bbs|host|wwwroot|www|site|root|hytop|flashfxp).*\.rar
 (phpmyadmin|jmx-console|jmxinvokerservlet)