diff --git a/client/web/antrea-ui/src/api/auth.tsx b/client/web/antrea-ui/src/api/auth.tsx
index 70a31a7b..b89f8349 100644
--- a/client/web/antrea-ui/src/api/auth.tsx
+++ b/client/web/antrea-ui/src/api/auth.tsx
@@ -36,7 +36,7 @@ api.defaults.withCredentials = true;
 
 export const authAPI = {
     login: async (username: string, password: string): Promise<Token> => {
-        return api.get(`auth/login`, {
+        return api.post(`auth/login`, {}, {
             headers: {
                 "Authorization": "Basic " + encode(username + ":" + password),
             },
@@ -44,7 +44,7 @@ export const authAPI = {
     },
 
     logout: async (): Promise<void> => {
-        return api.get(`auth/logout`).then(_ => {}).catch((error) => handleError(error, "Error when trying to log out"));
+        return api.post(`auth/logout`, {}).then(_ => {}).catch((error) => handleError(error, "Error when trying to log out"));
     },
 
     refreshToken: async (): Promise<void> => {
diff --git a/pkg/server/auth.go b/pkg/server/auth.go
index b106753a..cb7bafb4 100644
--- a/pkg/server/auth.go
+++ b/pkg/server/auth.go
@@ -17,6 +17,7 @@ package server
 import (
 	"fmt"
 	"net/http"
+	"strings"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -70,7 +71,7 @@ func (s *server) Login(c *gin.Context) {
 			Value:    refreshToken.Raw,
 			Path:     "/api/v1/auth",
 			Domain:   "",
-			MaxAge:   int(refreshToken.ExpiresIn / time.Second),
+			MaxAge:   0, // make it a session cookie
 			Secure:   s.config.CookieSecure,
 			HttpOnly: true,
 			SameSite: http.SameSiteStrictMode,
@@ -86,15 +87,30 @@ func (s *server) Login(c *gin.Context) {
 
 func (s *server) RefreshToken(c *gin.Context) {
 	if sError := func() *serverError {
-		cookie, err := c.Request.Cookie("antrea-ui-refresh-token")
-		if err != nil {
-			return &serverError{
-				code:    http.StatusUnauthorized,
-				message: "Missing 'antrea-ui-refresh-token' cookie",
-				err:     err,
+		// /refresh supports both the Authorization header and the token cookie, giving
+		// priority to the Authorization header
+		var refreshToken string
+		auth := c.GetHeader("Authorization")
+		if auth != "" {
+			t := strings.Split(auth, " ")
+			if len(t) != 2 || t[0] != "Bearer" {
+				return &serverError{
+					code:    http.StatusUnauthorized,
+					message: "Authorization header does not have valid format",
+				}
+			}
+			refreshToken = t[1]
+		} else {
+			cookie, err := c.Request.Cookie("antrea-ui-refresh-token")
+			if err != nil {
+				return &serverError{
+					code:    http.StatusUnauthorized,
+					message: "Missing 'antrea-ui-refresh-token' cookie",
+					err:     err,
+				}
 			}
+			refreshToken = cookie.Value
 		}
-		refreshToken := cookie.Value
 		if err := s.tokenManager.VerifyRefreshToken(refreshToken); err != nil {
 			return &serverError{
 				code:    http.StatusUnauthorized,
@@ -157,7 +173,7 @@ func (s *server) AddAuthRoutes(r *gin.RouterGroup) {
 		loginHandlers = append(loginHandlers, ratelimit.Middleware(loginRateLimiter))
 	}
 	loginHandlers = append(loginHandlers, s.Login)
-	r.GET("/login", loginHandlers...)
+	r.POST("/login", loginHandlers...)
 	r.GET("/refresh_token", s.RefreshToken)
-	r.GET("/logout", s.Logout)
+	r.POST("/logout", s.Logout)
 }
diff --git a/pkg/server/auth_test.go b/pkg/server/auth_test.go
index 701b6a94..8a2c3d23 100644
--- a/pkg/server/auth_test.go
+++ b/pkg/server/auth_test.go
@@ -45,7 +45,7 @@ func TestLogin(t *testing.T) {
 	wrongPassword := "abc"
 
 	sendRequest := func(ts *testServer, mutators ...func(req *http.Request)) *httptest.ResponseRecorder {
-		req := httptest.NewRequest("GET", "/api/v1/auth/login", nil)
+		req := httptest.NewRequest("POST", "/api/v1/auth/login", nil)
 		for _, m := range mutators {
 			m(req)
 		}
@@ -81,7 +81,7 @@ func TestLogin(t *testing.T) {
 		assert.Equal(t, refreshToken.Raw, cookie.Value)
 		assert.Equal(t, "/api/v1/auth", cookie.Path)
 		assert.Equal(t, "", cookie.Domain)
-		assert.Equal(t, int(testTokenValidity/time.Second), cookie.MaxAge)
+		assert.Equal(t, 0, cookie.MaxAge)
 		assert.True(t, cookie.HttpOnly)
 		assert.Equal(t, http.SameSiteStrictMode, cookie.SameSite)
 	})
@@ -132,56 +132,88 @@ func TestLogin(t *testing.T) {
 }
 
 func TestRefreshToken(t *testing.T) {
-	sendRequest := func(ts *testServer, refreshToken *string) *httptest.ResponseRecorder {
+	sendRequestWithAuthorizationHeader := func(ts *testServer, refreshToken string) *httptest.ResponseRecorder {
 		req := httptest.NewRequest("GET", "/api/v1/auth/refresh_token", nil)
-		if refreshToken != nil {
-			req.AddCookie(&http.Cookie{
-				Name:  "antrea-ui-refresh-token",
-				Value: *refreshToken,
-			})
-		}
+		req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", refreshToken))
 		rr := httptest.NewRecorder()
 		ts.router.ServeHTTP(rr, req)
 		return rr
 	}
 
-	t.Run("valid refresh", func(t *testing.T) {
-		ts := newTestServer(t)
-		refreshToken := getTestToken()
-		token := getTestToken()
-		gomock.InOrder(
-			ts.tokenManager.EXPECT().VerifyRefreshToken(refreshToken.Raw),
-			ts.tokenManager.EXPECT().GetToken().Return(token, nil),
-		)
-		rr := sendRequest(ts, &refreshToken.Raw)
-		assert.Equal(t, http.StatusOK, rr.Code)
+	sendRequestWithCookie := func(ts *testServer, refreshToken string) *httptest.ResponseRecorder {
+		req := httptest.NewRequest("GET", "/api/v1/auth/refresh_token", nil)
+		req.AddCookie(&http.Cookie{
+			Name:  "antrea-ui-refresh-token",
+			Value: refreshToken,
+		})
+		rr := httptest.NewRecorder()
+		ts.router.ServeHTTP(rr, req)
+		return rr
+	}
 
-		// check body of response
-		var data apisv1alpha1.Token
-		require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &data))
-		assert.Equal(t, token.Raw, data.AccessToken)
-		assert.Equal(t, "Bearer", data.TokenType)
-		assert.Equal(t, int64(testTokenValidity/time.Second), data.ExpiresIn)
-	})
+	sendRequestNoAuth := func(ts *testServer) *httptest.ResponseRecorder {
+		req := httptest.NewRequest("GET", "/api/v1/auth/refresh_token", nil)
+		rr := httptest.NewRecorder()
+		ts.router.ServeHTTP(rr, req)
+		return rr
+	}
 
-	t.Run("missing cookie", func(t *testing.T) {
+	t.Run("no auth", func(t *testing.T) {
 		ts := newTestServer(t)
-		rr := sendRequest(ts, nil)
+		rr := sendRequestNoAuth(ts)
 		assert.Equal(t, http.StatusUnauthorized, rr.Code)
 	})
 
-	t.Run("wrong refresh token", func(t *testing.T) {
-		ts := newTestServer(t)
-		badToken := "bad"
-		ts.tokenManager.EXPECT().VerifyRefreshToken(badToken).Return(fmt.Errorf("bad token"))
-		rr := sendRequest(ts, &badToken)
-		assert.Equal(t, http.StatusUnauthorized, rr.Code)
-	})
+	authMethods := []struct {
+		name        string
+		requestFunc func(ts *testServer, refreshToken string) *httptest.ResponseRecorder
+	}{
+		{
+			name:        "auth header",
+			requestFunc: sendRequestWithAuthorizationHeader,
+		},
+		{
+			name:        "cookie",
+			requestFunc: sendRequestWithCookie,
+		},
+	}
+
+	for _, m := range authMethods {
+		t.Run(m.name, func(t *testing.T) {
+			t.Run("valid refresh", func(t *testing.T) {
+				ts := newTestServer(t)
+				refreshToken := getTestToken()
+				token := getTestToken()
+				gomock.InOrder(
+					ts.tokenManager.EXPECT().VerifyRefreshToken(refreshToken.Raw),
+					ts.tokenManager.EXPECT().GetToken().Return(token, nil),
+				)
+				rr := m.requestFunc(ts, refreshToken.Raw)
+				assert.Equal(t, http.StatusOK, rr.Code)
+
+				// check body of response
+				var data apisv1alpha1.Token
+				require.NoError(t, json.Unmarshal(rr.Body.Bytes(), &data))
+				assert.Equal(t, token.Raw, data.AccessToken)
+				assert.Equal(t, "Bearer", data.TokenType)
+				assert.Equal(t, int64(testTokenValidity/time.Second), data.ExpiresIn)
+			})
+
+			t.Run("wrong refresh token", func(t *testing.T) {
+				ts := newTestServer(t)
+				badToken := "bad"
+				ts.tokenManager.EXPECT().VerifyRefreshToken(badToken).Return(fmt.Errorf("bad token"))
+				rr := m.requestFunc(ts, badToken)
+				assert.Equal(t, http.StatusUnauthorized, rr.Code)
+			})
+		})
+	}
+
 }
 
 func TestLogout(t *testing.T) {
 	sendRequest := func(ts *testServer, refreshToken *string) *httptest.ResponseRecorder {
-		req := httptest.NewRequest("GET", "/api/v1/auth/logout", nil)
+		req := httptest.NewRequest("POST", "/api/v1/auth/logout", nil)
 		if refreshToken != nil {
 			req.AddCookie(&http.Cookie{
 				Name:  "antrea-ui-refresh-token",
diff --git a/pkg/server/server_test.go b/pkg/server/server_test.go
index efeef865..d058996a 100644
--- a/pkg/server/server_test.go
+++ b/pkg/server/server_test.go
@@ -120,9 +120,9 @@ func (ts *testServer) authorizeRequest(req *http.Request) {
 func TestAuthorization(t *testing.T) {
 	unprotectedRoutes := map[string]bool{
 		"GET /healthz":                   true,
-		"GET /api/v1/auth/login":         true,
+		"POST /api/v1/auth/login":        true,
 		"GET /api/v1/auth/refresh_token": true,
-		"GET /api/v1/auth/logout":        true,
+		"POST /api/v1/auth/logout":       true,
 		"GET /api/v1/version":            true,
 	}
 	ts := newTestServer(t)
diff --git a/test/e2e/api_test.go b/test/e2e/api_test.go
index 62eaaf58..79f4bdae 100644
--- a/test/e2e/api_test.go
+++ b/test/e2e/api_test.go
@@ -38,7 +38,7 @@ const (
 func TestLoginRateLimiting(t *testing.T) {
 	ctx := context.Background()
 	badLogin := func() int {
-		resp, err := Request(ctx, host, "GET", "api/v1/auth/login", nil, func(req *http.Request) {
+		resp, err := Request(ctx, host, "POST", "api/v1/auth/login", nil, func(req *http.Request) {
 			req.SetBasicAuth("admin", "bad") // invalid password
 		})
 		require.NoError(t, err)
diff --git a/test/e2e/client.go b/test/e2e/client.go
index 7ac19e69..2687245c 100644
--- a/test/e2e/client.go
+++ b/test/e2e/client.go
@@ -32,7 +32,7 @@ type AuthProvider struct {
 
 func (p *AuthProvider) getAccessToken(ctx context.Context, host string) (string, error) {
 	login := func(ctx context.Context) (*http.Response, error) {
-		return Request(ctx, host, "GET", "api/v1/auth/login", nil, func(req *http.Request) {
+		return Request(ctx, host, "POST", "api/v1/auth/login", nil, func(req *http.Request) {
 			req.SetBasicAuth("admin", "admin") // default credentials
 		})
 	}