diff --git a/.gitignore b/.gitignore
index 4d40a2a..9f5d3a3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,7 @@ web/build
 # next terminal
 /data/
 /logs/
+/server/resource/static/
+/server/resource/*.html
+/server/resource/*.json
+/server/resource/*.ico
diff --git a/Dockerfile b/Dockerfile
index 5ac1871..a6f791d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,6 +13,7 @@ RUN apk add gcc g++
 RUN go mod tidy
 RUN sh get_arch.sh
 RUN echo "Hello, my CPU architecture is $(uname -m)"
+RUN cp -r /app/web/build /app/server/resource/
 RUN go env;CGO_ENABLED=1 GOOS=linux GOARCH=$ARCH go build -a -ldflags '-linkmode external -extldflags "-static"' -o next-terminal main.go
 
 FROM alpine:latest
@@ -34,7 +35,7 @@ RUN touch config.yml
 
 COPY --from=builder /app/next-terminal ./
 COPY --from=builder /app/LICENSE ./
-COPY --from=builder /app/web/build ./web/build
+#COPY --from=builder /app/web/build ./web/build
 
 EXPOSE $SERVER_PORT $SSHD_PORT
 
diff --git a/go.mod b/go.mod
index 0b42bfb..4112295 100644
--- a/go.mod
+++ b/go.mod
@@ -30,14 +30,12 @@ require (
 )
 
 require (
-	github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c // indirect
 	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be // indirect
 	github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc // indirect
 	github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
 	github.com/fsnotify/fsnotify v1.4.7 // indirect
-	github.com/go-asn1-ber/asn1-ber v1.5.1 // indirect
 	github.com/go-sql-driver/mysql v1.5.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
diff --git a/go.sum b/go.sum
index 7cf2708..77f53a6 100644
--- a/go.sum
+++ b/go.sum
@@ -11,8 +11,6 @@ cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqCl
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c h1:/IBSNwUN8+eKzUzbJPqhK839ygXJ82sde8x3ogr6R28=
-github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c/go.mod h1:chxPXzSsl7ZWRAuOIE23GDNzjWuZquvFlgA8xmpunjU=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
@@ -24,6 +22,8 @@ github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuW
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
+github.com/benbjohnson/hashfs v0.2.1 h1:pxfukDsRT7iwBcICHCNsqQoopYV+gUQw5yPDiYt8A6M=
+github.com/benbjohnson/hashfs v0.2.1/go.mod h1:7OMXaMVo1YkfiIPxKrl7OXkUTUgWjmsAKyR+E6xDIRM=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
@@ -46,8 +46,6 @@ github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfc
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/denisbrodbeck/machineid v1.0.1 h1:geKr9qtkB876mXguW2X6TU4ZynleN6ezuMSRhl4D7AQ=
-github.com/denisbrodbeck/machineid v1.0.1/go.mod h1:dJUwb7PTidGDeYyUBmXZ2GphQBbjJCrnectwCyxcUSI=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
@@ -57,12 +55,8 @@ github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMo
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/gliderlabs/ssh v0.3.3 h1:mBQ8NiOgDkINJrZtoizkC3nDNYgSaWtxyem6S2XHBtA=
 github.com/gliderlabs/ssh v0.3.3/go.mod h1:ZSS+CUoKHDrqVakTfTWUlKSr9MtMFkC4UvtQKD7O914=
-github.com/go-asn1-ber/asn1-ber v1.5.1 h1:pDbRAunXzIUXfx4CB2QJFv5IuPiuoW+sWvr/Us009o8=
-github.com/go-asn1-ber/asn1-ber v1.5.1/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
-github.com/go-ldap/ldap/v3 v3.4.1 h1:fU/0xli6HY02ocbMuozHAYsaHLcnkLjvho2r5a34BUU=
-github.com/go-ldap/ldap/v3 v3.4.1/go.mod h1:iYS1MdmrmceOJ1QOTnRXrIs7i3kloqtmGQjRvjKpyMg=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-sql-driver/mysql v1.5.0 h1:ozyZYNQW3x3HtqT1jira07DN2PArx2v7/mN66gGcHOs=
@@ -258,7 +252,6 @@ golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnf
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e h1:gsTQYXdTw2Gq7RBsWvlQ91b+aEQ6bXFUngBGuR8sPpI=
diff --git a/playground/docker-compose.yml b/playground/docker-compose.yml
index 1a881bd..a84baf4 100644
--- a/playground/docker-compose.yml
+++ b/playground/docker-compose.yml
@@ -2,6 +2,8 @@ version: '3.3'
 services:
   guacd:
     image: dushixiang/guacd:latest
+    environment:
+      GUACD_LOG_LEVEL: debug
     volumes:
       - ../data:/usr/local/next-terminal/data
     ports:
diff --git a/server/api/guacamole.go b/server/api/guacamole.go
index 042f3fb..618defc 100644
--- a/server/api/guacamole.go
+++ b/server/api/guacamole.go
@@ -3,6 +3,7 @@ package api
 import (
 	"context"
 	"errors"
+	"fmt"
 	"net/http"
 	"path"
 	"strconv"
@@ -105,14 +106,9 @@ func (api GuacamoleApi) Guacamole(c echo.Context) error {
 				utils.Disconnect(ws, AccessGatewayCreateError, "创建SSH隧道失败："+err.Error())
 				return nil
 			}
-			defer g.CloseSshTunnel(s.ID)
 			ip = exposedIP
 			port = exposedPort
-		}
-		active, err := utils.Tcping(ip, port)
-		if !active {
-			utils.Disconnect(ws, AssetNotActive, "目标资产不在线: "+err.Error())
-			return nil
+			defer g.CloseSshTunnel(s.ID)
 		}
 
 		configuration.SetParameter("hostname", ip)
@@ -135,14 +131,15 @@ func (api GuacamoleApi) Guacamole(c echo.Context) error {
 	}
 
 	addr := config.GlobalCfg.Guacd.Hostname + ":" + strconv.Itoa(config.GlobalCfg.Guacd.Port)
-	log.Debugf("[%v:%v] 创建guacd隧道[%v]", sessionId, connectionId, addr)
+	asset := fmt.Sprintf("%s:%s", configuration.GetParameter("hostname"), configuration.GetParameter("port"))
+	log.Debugf("[%v] 新建 guacd 会话, guacd=%v, asset=%v", sessionId, addr, asset)
 
 	guacdTunnel, err := guacd.NewTunnel(addr, configuration)
 	if err != nil {
 		if connectionId == "" {
 			utils.Disconnect(ws, NewTunnelError, err.Error())
 		}
-		log.Printf("[%v:%v] 建立连接失败: %v", sessionId, connectionId, err.Error())
+		log.Printf("[%v] 建立连接失败: %v", sessionId, err.Error())
 		return err
 	}
 
@@ -164,7 +161,7 @@ func (api GuacamoleApi) Guacamole(c echo.Context) error {
 
 		nextSession.Observer = session.NewObserver(sessionId)
 		session.GlobalSessionManager.Add <- nextSession
-		go nextSession.Observer.Run()
+		go nextSession.Observer.Start()
 		sess := model.Session{
 			ConnectionId: guacdTunnel.UUID,
 			Width:        intWidth,
@@ -177,7 +174,7 @@ func (api GuacamoleApi) Guacamole(c echo.Context) error {
 			sess.Reviewed = true
 		}
 		// 创建新会话
-		log.Debugf("[%v:%v] 创建新会话: %v", sessionId, connectionId, sess.ConnectionId)
+		log.Debugf("[%v] 新建会话成功: %v", sessionId, sess.ConnectionId)
 		if err := repository.SessionRepository.UpdateById(ctx, &sess, sessionId); err != nil {
 			return err
 		}
@@ -199,7 +196,7 @@ func (api GuacamoleApi) Guacamole(c echo.Context) error {
 	for {
 		_, message, err := ws.ReadMessage()
 		if err != nil {
-			log.Debugf("[%v:%v] WebSocket已关闭", sessionId, connectionId)
+			log.Debugf("[%v:%v] WebSocket已关闭, %v", sessionId, connectionId, err.Error())
 			// guacdTunnel.Read() 会阻塞，所以要先把guacdTunnel客户端关闭，才能退出Guacd循环
 			_ = guacdTunnel.Close()
 
diff --git a/server/api/term.go b/server/api/term.go
index 0a28bbc..355fa46 100644
--- a/server/api/term.go
+++ b/server/api/term.go
@@ -152,7 +152,7 @@ func (api WebTerminalApi) SshEndpoint(c echo.Context) error {
 		NextTerminal: nextTerminal,
 		Observer:     session.NewObserver(s.ID),
 	}
-	go nextSession.Observer.Run()
+	go nextSession.Observer.Start()
 	session.GlobalSessionManager.Add <- nextSession
 
 	termHandler := NewTermHandler(sessionId, isRecording, ws, nextTerminal)
diff --git a/server/app/server.go b/server/app/server.go
index 9902c98..137925e 100644
--- a/server/app/server.go
+++ b/server/app/server.go
@@ -1,26 +1,56 @@
 package app
 
 import (
+	"io/fs"
 	"net/http"
+	"os"
 
 	"next-terminal/server/api"
+	"next-terminal/server/config"
+	"next-terminal/server/log"
+	"next-terminal/server/resource"
 
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 )
 
+func getFS(useOS bool) fs.FS {
+	if useOS {
+		log.Debug("using live mode")
+		return os.DirFS("web/build")
+	}
+
+	log.Debug("using embed mode")
+	fsys, err := fs.Sub(resource.Resource, "build")
+	if err != nil {
+		panic(err)
+	}
+
+	return fsys
+}
+
+func WrapHandler(h http.Handler) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		c.Response().Header().Set("Cache-Control", `public, max-age=31536000`)
+		h.ServeHTTP(c.Response(), c.Request())
+		return nil
+	}
+}
+
 func setupRoutes() *echo.Echo {
 
 	e := echo.New()
 	e.HideBanner = true
 	//e.Logger = log.GetEchoLogger()
 	//e.Use(log.Hook())
-	e.File("/", "web/build/index.html")
-	e.File("/asciinema.html", "web/build/asciinema.html")
-	e.File("/", "web/build/index.html")
-	e.File("/favicon.ico", "web/build/favicon.ico")
-	e.File("/logo.png", "web/build/logo.png")
-	e.Static("/static", "web/build/static")
+
+	fsys := getFS(config.GlobalCfg.Debug)
+	fileServer := http.FileServer(http.FS(fsys))
+	handler := WrapHandler(fileServer)
+	e.GET("/", handler)
+	e.GET("/asciinema.html", handler)
+	e.GET("/favicon.ico", handler)
+	e.GET("/static/*", handler)
 
 	e.Use(middleware.Recover())
 	e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
diff --git a/server/global/gateway/gateway.go b/server/global/gateway/gateway.go
index e63ae71..6f6839a 100644
--- a/server/global/gateway/gateway.go
+++ b/server/global/gateway/gateway.go
@@ -44,7 +44,7 @@ func (g *Gateway) Run() {
 		select {
 		case t := <-g.Add:
 			g.tunnels[t.ID] = t
-			go t.Run()
+			go t.Open()
 		case k := <-g.Del:
 			if _, ok := g.tunnels[k]; ok {
 				g.tunnels[k].Close()
diff --git a/server/global/gateway/manager.go b/server/global/gateway/manager.go
index 9e5afd5..d2e45c1 100644
--- a/server/global/gateway/manager.go
+++ b/server/global/gateway/manager.go
@@ -15,7 +15,7 @@ func NewManager() *Manager {
 	}
 }
 
-func (m *Manager) Run() {
+func (m *Manager) Start() {
 	for {
 		select {
 		case g := <-m.Add:
@@ -38,5 +38,5 @@ var GlobalGatewayManager *Manager
 
 func init() {
 	GlobalGatewayManager = NewManager()
-	go GlobalGatewayManager.Run()
+	go GlobalGatewayManager.Start()
 }
diff --git a/server/global/gateway/tunnel.go b/server/global/gateway/tunnel.go
index 8bc4f85..b8d0364 100644
--- a/server/global/gateway/tunnel.go
+++ b/server/global/gateway/tunnel.go
@@ -22,36 +22,35 @@ type Tunnel struct {
 	err        error
 }
 
-func (r *Tunnel) Run() {
+func (r *Tunnel) Open() {
 	localAddr := fmt.Sprintf("%s:%d", r.LocalHost, r.LocalPort)
-	log.Debugf("等待客户端访问 [%v] ...", localAddr)
+
+	go func() {
+		<-r.ctx.Done()
+		_ = r.listener.Close()
+		log.Debugf("SSH 隧道 %v 关闭", localAddr)
+	}()
+	log.Debugf("等待客户端访问 %v", localAddr)
 	localConn, err := r.listener.Accept()
 	if err != nil {
 		r.err = err
 		return
 	}
 
-	log.Debugf("客户端 [%v] 已连接至 [%v]", localConn.RemoteAddr().String(), localAddr)
+	log.Debugf("客户端 %v 连接至 %v", localConn.RemoteAddr().String(), localAddr)
 	remoteAddr := fmt.Sprintf("%s:%d", r.RemoteHost, r.RemotePort)
-	log.Debugf("连接远程主机 [%v] ...", remoteAddr)
+	log.Debugf("连接远程主机 %v ...", remoteAddr)
 	remoteConn, err := r.Gateway.SshClient.Dial("tcp", remoteAddr)
 	if err != nil {
-		log.Debugf("连接远程主机 [%v] 失败", remoteAddr)
+		log.Debugf("连接远程主机 %v 失败", remoteAddr)
 		r.err = err
 		return
 	}
 
-	log.Debugf("连接远程主机 [%v] 成功", remoteAddr)
+	log.Debugf("连接远程主机 %v 成功", remoteAddr)
 	go copyConn(localConn, remoteConn)
 	go copyConn(remoteConn, localConn)
-	log.Debugf("开始转发数据 [%v]->[%v]", localAddr, remoteAddr)
-	go func() {
-		<-r.ctx.Done()
-		_ = r.listener.Close()
-		_ = localConn.Close()
-		_ = remoteConn.Close()
-		log.Debugf("SSH隧道 [%v]-[%v] 已关闭", localAddr, remoteAddr)
-	}()
+	log.Debugf("转发数据 [%v]->[%v]", localAddr, remoteAddr)
 }
 
 func (r Tunnel) Close() {
diff --git a/server/global/security/security.go b/server/global/security/security.go
index 47b5b86..9831ed1 100644
--- a/server/global/security/security.go
+++ b/server/global/security/security.go
@@ -25,7 +25,7 @@ func NewManager() *Manager {
 	}
 }
 
-func (m *Manager) Run() {
+func (m *Manager) Start() {
 	for {
 		select {
 		case s := <-m.Add:
@@ -66,5 +66,5 @@ var GlobalSecurityManager *Manager
 
 func init() {
 	GlobalSecurityManager = NewManager()
-	go GlobalSecurityManager.Run()
+	go GlobalSecurityManager.Start()
 }
diff --git a/server/global/session/session.go b/server/global/session/session.go
index 7a85a80..f5d7e9a 100644
--- a/server/global/session/session.go
+++ b/server/global/session/session.go
@@ -47,9 +47,9 @@ func NewObserver(id string) *Manager {
 	}
 }
 
-func (m *Manager) Run() {
+func (m *Manager) Start() {
 	defer fmt.Printf("Session Manager %v End\n", m.id)
-	fmt.Printf("Session Manager %v  Run\n", m.id)
+	fmt.Printf("Session Manager %v  Open\n", m.id)
 	for {
 		select {
 		case s := <-m.Add:
@@ -94,5 +94,5 @@ var GlobalSessionManager *Manager
 
 func init() {
 	GlobalSessionManager = NewManager()
-	go GlobalSessionManager.Run()
+	go GlobalSessionManager.Start()
 }
diff --git a/server/resource/resource.go b/server/resource/resource.go
new file mode 100644
index 0000000..054c934
--- /dev/null
+++ b/server/resource/resource.go
@@ -0,0 +1,6 @@
+package resource
+
+import "embed"
+
+//go:embed *
+var Resource embed.FS
diff --git a/server/sshd/ui.go b/server/sshd/ui.go
index a59cc35..547451b 100644
--- a/server/sshd/ui.go
+++ b/server/sshd/ui.go
@@ -268,7 +268,7 @@ func (gui Gui) handleAccessAsset(sess *ssh.Session, sessionId string) (err error
 		NextTerminal: nextTerminal,
 		Observer:     session.NewObserver(s.ID),
 	}
-	go nextSession.Observer.Run()
+	go nextSession.Observer.Start()
 	session.GlobalSessionManager.Add <- nextSession
 
 	if err := sshSession.Wait(); err != nil {