diff --git a/server/handler/link_auth.go b/server/handler/link_auth.go
index f25bb49..300710c 100644
--- a/server/handler/link_auth.go
+++ b/server/handler/link_auth.go
@@ -1,9 +1,11 @@
 package handler
 
 import (
+	"crypto/md5"
 	"encoding/xml"
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"strings"
 	"text/template"
@@ -87,6 +89,15 @@ func LinkAuth(w http.ResponseWriter, r *http.Request) {
 	sess.Group = cr.GroupSelect
 	sess.MacAddr = strings.ToLower(cr.MacAddressList.MacAddress)
 	sess.UniqueIdGlobal = cr.DeviceId.UniqueIdGlobal
+	// 获取客户端mac地址
+	macHw, err := net.ParseMAC(sess.MacAddr)
+	if err != nil {
+		sum := md5.Sum([]byte(sess.UniqueIdGlobal))
+		macHw = sum[0:5] // 5个byte
+		macHw = append([]byte{0x02}, macHw...)
+		sess.MacAddr = macHw.String()
+	}
+	sess.MacHw = macHw
 	other := &dbdata.SettingOther{}
 	_ = dbdata.SettingGet(other)
 	rd := RequestData{SessionId: sess.Sid, SessionToken: sess.Sid + "@" + sess.Token,
diff --git a/server/handler/link_cstp.go b/server/handler/link_cstp.go
index 1618b47..97a9fb3 100644
--- a/server/handler/link_cstp.go
+++ b/server/handler/link_cstp.go
@@ -12,6 +12,7 @@ import (
 )
 
 func LinkCstp(conn net.Conn, bufRW *bufio.ReadWriter, cSess *sessdata.ConnSession) {
+	base.Debug("LinkCstp connect ip:", cSess.IpAddr, "user:", cSess.Username, "rip:", conn.RemoteAddr())
 	defer func() {
 		base.Debug("LinkCstp return", cSess.IpAddr)
 		_ = conn.Close()
diff --git a/server/handler/link_dtls.go b/server/handler/link_dtls.go
index e674ff2..23c6e86 100644
--- a/server/handler/link_dtls.go
+++ b/server/handler/link_dtls.go
@@ -10,7 +10,7 @@ import (
 )
 
 func LinkDtls(conn net.Conn, cSess *sessdata.ConnSession) {
-	base.Debug("LinkDtls connect ip:", cSess.IpAddr, "udp-rip:", conn.RemoteAddr())
+	base.Debug("LinkDtls connect ip:", cSess.IpAddr, "user:", cSess.Username, "udp-rip:", conn.RemoteAddr())
 	dSess := cSess.NewDtlsConn()
 	if dSess == nil {
 		// 创建失败，直接关闭链接
diff --git a/server/handler/pool.go b/server/handler/pool.go
old mode 100755
new mode 100644
diff --git a/server/sessdata/session.go b/server/sessdata/session.go
index 7a38710..b2a2834 100644
--- a/server/sessdata/session.go
+++ b/server/sessdata/session.go
@@ -1,7 +1,6 @@
 package sessdata
 
 import (
-	"crypto/md5"
 	"fmt"
 	"math/rand"
 	"net"
@@ -32,6 +31,7 @@ type ConnSession struct {
 	IpAddr              net.IP // 分配的ip地址
 	LocalIp             net.IP
 	MacHw               net.HardwareAddr // 客户端mac地址,从Session取出
+	Username            string
 	RemoteAddr          string
 	Mtu                 int
 	IfName              string
@@ -70,6 +70,7 @@ type Session struct {
 	DtlsSid        string // dtls协议的 session_id
 	MacAddr        string // 客户端mac地址
 	UniqueIdGlobal string // 客户端唯一标示
+	MacHw          net.HardwareAddr
 	Username       string // 用户名
 	Group          string
 	AuthStep       string
@@ -147,6 +148,7 @@ func (s *Session) NewConn() *ConnSession {
 	s.mux.RLock()
 	active := s.IsActive
 	macAddr := s.MacAddr
+	macHw := s.MacHw
 	username := s.Username
 	s.mux.RUnlock()
 	if active {
@@ -157,14 +159,6 @@ func (s *Session) NewConn() *ConnSession {
 	if !limit {
 		return nil
 	}
-	// 获取客户端mac地址
-	macHw, err := net.ParseMAC(macAddr)
-	if err != nil {
-		sum := md5.Sum([]byte(s.UniqueIdGlobal))
-		macHw = sum[0:5] // 5个byte
-		macHw = append([]byte{0x02}, macHw...)
-		macAddr = macHw.String()
-	}
 	ip := AcquireIp(username, macAddr)
 	if ip == nil {
 		LimitClient(username, true)
@@ -173,7 +167,7 @@ func (s *Session) NewConn() *ConnSession {
 
 	// 查询group信息
 	group := &dbdata.Group{}
-	err = dbdata.One("Name", s.Group, group)
+	err := dbdata.One("Name", s.Group, group)
 	if err != nil {
 		base.Error(err)
 		return nil
@@ -182,6 +176,7 @@ func (s *Session) NewConn() *ConnSession {
 	cSess := &ConnSession{
 		Sess:           s,
 		MacHw:          macHw,
+		Username:       username,
 		IpAddr:         ip,
 		closeOnce:      sync.Once{},
 		CloseChan:      make(chan struct{}),
@@ -229,6 +224,11 @@ func (cs *ConnSession) Close() {
 		cs.Sess.LastLogin = time.Now()
 		cs.Sess.CSess = nil
 
+		dSess := cs.GetDtlsSession()
+		if dSess != nil {
+			dSess.Close()
+		}
+
 		ReleaseIp(cs.IpAddr, cs.Sess.MacAddr)
 		LimitClient(cs.Sess.Username, true)
 	})
@@ -272,7 +272,7 @@ func (cs *ConnSession) GetDtlsSession() *DtlsSession {
 	return nil
 }
 
-const BandwidthPeriodSec = 2 // 流量速率统计周期(秒)
+const BandwidthPeriodSec = 10 // 流量速率统计周期(秒)
 
 func (cs *ConnSession) ratePeriod() {
 	tick := time.NewTicker(time.Second * BandwidthPeriodSec)
diff --git a/server/sessdata/statsinfo.go b/server/sessdata/statsinfo.go
index cc6f762..e07a0f2 100644
--- a/server/sessdata/statsinfo.go
+++ b/server/sessdata/statsinfo.go
@@ -11,7 +11,7 @@ import (
 )
 
 const (
-	StatsCycleSec = 5  // 统计周期（秒）
+	StatsCycleSec = 10 // 统计周期（秒）
 	AddCycleSec   = 60 // 记录到数据表周期（秒）
 )
 
diff --git a/web/src/pages/Home.vue b/web/src/pages/Home.vue
index 6f8c9bd..9c071fe 100644
--- a/web/src/pages/Home.vue
+++ b/web/src/pages/Home.vue
@@ -190,7 +190,7 @@ export default {
     this.getAllStats() 
     const chartsTimer = setInterval(() => {
         this.getAllStats()                                      
-    }, 5000);
+    }, 10000);
     this.$once('hook:beforeDestroy', () => {
       clearInterval(chartsTimer);
     })    
diff --git a/web/src/pages/user/Online.vue b/web/src/pages/user/Online.vue
index a2d339e..f9041cb 100644
--- a/web/src/pages/user/Online.vue
+++ b/web/src/pages/user/Online.vue
@@ -128,7 +128,7 @@ export default {
 
     const chatTimer = setInterval(() => {
       this.getData();
-    }, 2000);
+    }, 10000);
 
     this.$once('hook:beforeDestroy', () => {
       clearInterval(chatTimer);