diff --git a/main.go b/main.go
index 1d411a0..1de853f 100644
--- a/main.go
+++ b/main.go
@@ -34,8 +34,14 @@ func main() {
     sessionMgr := auth.NewSessionManager(cfg.SessionTimeout)
     authMw := auth.NewAuthMiddleware(cfg.Username, cfg.Password, sessionMgr, templates)
     
+    // 转换 BlockedDomains 为 map
+    blockedDomainsMap := make(map[string]bool)
+    for _, domain := range cfg.BlockedDomains {
+        blockedDomainsMap[domain] = true
+    }
+    
     validator := security.NewRequestValidator(
-        cfg.BlockedDomains,
+        blockedDomainsMap,
         cfg.BlockedCIDRs,
         cfg.AllowedSchemes,
     )